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### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_17 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } for (int j = 0; j < 1; j++) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; for (int j = 0; j < 1; j++) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } for (int k = 0; k < 1; k++) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_17.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-17.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 17 Control flow: for loops * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_17 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / We need to have one source outside of a for loop in order * to prevent the Java compiler from generating an error because * data is uninitialized / data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / for (int j = 0; j < 1; j++) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; for (int j = 0; j < 1; j++) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodB2G() - use badsource and goodsink/ private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / for (int k = 0; k < 1; k++) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_21 extends AbstractTestCaseServlet { private boolean badPrivate = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } badPrivate = true; badSink(data , request, response); } private void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (badPrivate) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private boolean goodB2G1Private = false; private boolean goodB2G2Private = false; private boolean goodG2BPrivate = false; public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodB2G1(request, response); goodB2G2(request, response); goodG2B(request, response); } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } goodB2G1Private = false; goodB2G1Sink(data , request, response); } private void goodB2G1Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodB2G1Private) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } goodB2G2Private = true; goodB2G2Sink(data , request, response); } private void goodB2G2Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodB2G2Private) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; goodG2BPrivate = true; goodG2BSink(data , request, response); } private void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodG2BPrivate) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_21.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-21.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 21 Control flow: Flow controlled by value of a private variable. All functions contained in one file. * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_21 extends AbstractTestCaseServlet { / The variable below is used to drive control flow in the sink function / private boolean badPrivate = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / badPrivate = true; badSink(data , request, response); } private void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (badPrivate) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / The variables below are used to drive control flow in the sink functions. / private boolean goodB2G1Private = false; private boolean goodB2G2Private = false; private boolean goodG2BPrivate = false; public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodB2G1(request, response); goodB2G2(request, response); goodG2B(request, response); } / goodB2G1() - use BadSource and GoodSink by setting the variable to false instead of true / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / goodB2G1Private = false; goodB2G1Sink(data , request, response); } private void goodB2G1Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodB2G1Private) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } / goodB2G2() - use BadSource and GoodSink by reversing the blocks in the if in the sink function / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / goodB2G2Private = true; goodB2G2Sink(data , request, response); } private void goodB2G2Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodB2G2Private) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } / goodG2B() - use GoodSource and BadSink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; goodG2BPrivate = true; goodG2BSink(data , request, response); } private void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodG2BPrivate) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22a extends AbstractTestCaseServlet { public static boolean badPublicStatic = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } badPublicStatic = true; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22b()).badSink(data , request, response); } public static boolean goodB2G1PublicStatic = false; public static boolean goodB2G2PublicStatic = false; public static boolean goodG2BPublicStatic = false; public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodB2G1(request, response); goodB2G2(request, response); goodG2B(request, response); } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } goodB2G1PublicStatic = false; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22b()).goodB2G1Sink(data , request, response); } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } goodB2G2PublicStatic = true; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22b()).goodB2G2Sink(data , request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = "foo"; goodG2BPublicStatic = true; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22b()).goodG2BSink(data , request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-22a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 22 Control flow: Flow controlled by value of a public static variable. Sink functions are in a separate file from sources. * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22a extends AbstractTestCaseServlet { / The public static variable below is used to drive control flow in the sink function. * The public static variable mimics a global variable in the C/C++ language family. / public static boolean badPublicStatic = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / badPublicStatic = true; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22b()).badSink(data , request, response); } / The public static variables below are used to drive control flow in the sink functions. * The public static variable mimics a global variable in the C/C++ language family. / public static boolean goodB2G1PublicStatic = false; public static boolean goodB2G2PublicStatic = false; public static boolean goodG2BPublicStatic = false; public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodB2G1(request, response); goodB2G2(request, response); goodG2B(request, response); } / goodB2G1() - use badsource and goodsink by setting the static variable to false instead of true / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / goodB2G1PublicStatic = false; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22b()).goodB2G1Sink(data , request, response); } / goodB2G2() - use badsource and goodsink by reversing the blocks in the if in the sink function / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / goodB2G2PublicStatic = true; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22b()).goodB2G2Sink(data , request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; / FIX: Use a hardcoded string / data = "foo"; goodG2BPublicStatic = true; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22b()).goodG2BSink(data , request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22a.badPublicStatic) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } else { data = null; } } public void goodB2G1Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22a.goodB2G1PublicStatic) { data = null; } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } public void goodB2G2Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22a.goodB2G2PublicStatic) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } else { data = null; } } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22a.goodG2BPublicStatic) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } else { data = null; } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-22b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 22 Control flow: Flow controlled by value of a public static variable. Sink functions are in a separate file from sources. * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22a.badPublicStatic) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } } / goodB2G1() - use badsource and goodsink by setting the static variable to false instead of true / public void goodB2G1Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22a.goodB2G1PublicStatic) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } / goodB2G2() - use badsource and goodsink by reversing the blocks in the if in the sink function / public void goodB2G2Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22a.goodB2G2PublicStatic) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_22a.goodG2BPublicStatic) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors */ data = null; } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_31 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } dataCopy = data; } { String data = dataCopy; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; data = "foo"; dataCopy = data; } { String data = dataCopy; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } dataCopy = data; } { String data = dataCopy; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_31.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-31.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 31 Data flow: make a copy of data within the same method * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_31 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / dataCopy = data; } { String data = dataCopy; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; / FIX: Use a hardcoded string / data = "foo"; dataCopy = data; } { String data = dataCopy; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / dataCopy = data; } { String data = dataCopy; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_41 extends AbstractTestCaseServlet { private void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } badSink(data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; goodG2BSink(data , request, response ); } private void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } goodB2GSink(data , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_41.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-41.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 41 Data flow: data passed as an argument from one method to another in the same class * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_41 extends AbstractTestCaseServlet { private void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / badSink(data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; goodG2BSink(data , request, response ); } private void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / goodB2GSink(data , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_42 extends AbstractTestCaseServlet { private String badSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } return data; } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = badSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } private String goodG2BSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; return data; } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = goodG2BSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } private String goodB2GSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } return data; } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = goodB2GSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_42.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-42.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 42 Data flow: data returned from one method to another in the same class * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_42 extends AbstractTestCaseServlet { private String badSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / return data; } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = badSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / private String goodG2BSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; return data; } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = goodG2BSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / private String goodB2GSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / return data; } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = goodB2GSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_45 extends AbstractTestCaseServlet { private String dataBad; private String dataGoodG2B; private String dataGoodB2G; private void badSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataBad; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } dataBad = data; badSink(request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2BSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataGoodG2B; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; dataGoodG2B = data; goodG2BSink(request, response); } private void goodB2GSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataGoodB2G; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } dataGoodB2G = data; goodB2GSink(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_45.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-45.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 45 Data flow: data passed as a private class member variable from one function to another in the same class * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_45 extends AbstractTestCaseServlet { private String dataBad; private String dataGoodG2B; private String dataGoodB2G; private void badSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataBad; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / dataBad = data; badSink(request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2BSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataGoodG2B; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; dataGoodG2B = data; goodG2BSink(request, response); } private void goodB2GSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataGoodB2G; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / dataGoodB2G = data; goodB2GSink(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_51a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_51b()).badSink(data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_51b()).goodG2BSink(data , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_51b()).goodB2GSink(data , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_51a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-51a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 51 Data flow: data passed as an argument from one function to another in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_51a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_51b()).badSink(data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_51b()).goodG2BSink(data , request, response ); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_51b()).goodB2GSink(data , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_51b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_51b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-51b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 51 Data flow: data passed as an argument from one function to another in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_51b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_52a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_52b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_52b()).goodG2BSink(data , request, response); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_52b()).goodB2GSink(data , request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_52a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-52a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 52 Data flow: data passed as an argument from one method to another to another in three different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_52a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_52b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_52b()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_52b()).goodB2GSink(data , request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_52b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_52c()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_52c()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_52c()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_52b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-52b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 52 Data flow: data passed as an argument from one method to another to another in three different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_52b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_52c()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_52c()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_52c()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_52c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_52c.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-52c.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 52 Data flow: data passed as an argument from one method to another to another in three different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_52c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53b()).goodG2BSink(data , request, response); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53b()).goodB2GSink(data , request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-53a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 53 Data flow: data passed as an argument from one method through two others to a fourth; all four functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53b()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53b()).goodB2GSink(data , request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53c()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53c()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53c()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-53b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 53 Data flow: data passed as an argument from one method through two others to a fourth; all four functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53c()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53c()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53c()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53d()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53d()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53d()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53c.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-53c.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 53 Data flow: data passed as an argument from one method through two others to a fourth; all four functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53d()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53d()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53d()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53d { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53d.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-53d.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 53 Data flow: data passed as an argument from one method through two others to a fourth; all four functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_53d { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54b()).goodG2BSink(data , request, response); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54b()).goodB2GSink(data , request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-54a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 54 Data flow: data passed as an argument from one method through three others to a fifth; all five functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54b()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54b()).goodB2GSink(data , request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54c()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54c()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54c()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-54b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 54 Data flow: data passed as an argument from one method through three others to a fifth; all five functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54c()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54c()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54c()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54d()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54d()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54d()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54c.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-54c.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 54 Data flow: data passed as an argument from one method through three others to a fifth; all five functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54d()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54d()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54d()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54d { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54e()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54e()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54e()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54d.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-54d.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 54 Data flow: data passed as an argument from one method through three others to a fifth; all five functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54d { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54e()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54e()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54e()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54e { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54e.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-54e.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 54 Data flow: data passed as an argument from one method through three others to a fifth; all five functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_54e { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_61a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_61b()).badSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_61b()).goodG2BSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_61b()).goodB2GSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_61a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-61a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 61 Data flow: data returned from one method to another in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_61a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_61b()).badSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_61b()).goodG2BSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_61b()).goodB2GSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_61b { public String badSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } return data; } public String goodG2BSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; return data; } public String goodB2GSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } return data; } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_61b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-61b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 61 Data flow: data returned from one method to another in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_61b { public String badSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / return data; } / goodG2B() - use goodsource and badsink / public String goodG2BSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; return data; } / goodB2G() - use badsource and goodsink / public String goodB2GSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception */ return data; } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_66a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } String[] dataArray = new String[5]; dataArray[2] = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_66b()).badSink(dataArray , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; String[] dataArray = new String[5]; dataArray[2] = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_66b()).goodG2BSink(dataArray , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } String[] dataArray = new String[5]; dataArray[2] = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_66b()).goodB2GSink(dataArray , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_66a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-66a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 66 Data flow: data passed in an array from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_66a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / String[] dataArray = new String[5]; dataArray[2] = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_66b()).badSink(dataArray , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; String[] dataArray = new String[5]; dataArray[2] = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_66b()).goodG2BSink(dataArray , request, response ); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / String[] dataArray = new String[5]; dataArray[2] = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_66b()).goodB2GSink(dataArray , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_66b { public void badSink(String dataArray[] , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataArray[2]; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(String dataArray[] , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataArray[2]; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(String dataArray[] , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataArray[2]; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_66b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-66b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 66 Data flow: data passed in an array from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_66b { public void badSink(String dataArray[] , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataArray[2]; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String dataArray[] , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataArray[2]; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(String dataArray[] , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataArray[2]; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_67a extends AbstractTestCaseServlet { static class Container { public String containerOne; } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } Container dataContainer = new Container(); dataContainer.containerOne = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_67b()).badSink(dataContainer , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; Container dataContainer = new Container(); dataContainer.containerOne = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_67b()).goodG2BSink(dataContainer , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } Container dataContainer = new Container(); dataContainer.containerOne = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_67b()).goodB2GSink(dataContainer , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_67a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-67a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 67 Data flow: data passed in a class from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_67a extends AbstractTestCaseServlet { static class Container { public String containerOne; } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / Container dataContainer = new Container(); dataContainer.containerOne = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_67b()).badSink(dataContainer , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; Container dataContainer = new Container(); dataContainer.containerOne = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_67b()).goodG2BSink(dataContainer , request, response ); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / Container dataContainer = new Container(); dataContainer.containerOne = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_67b()).goodB2GSink(dataContainer , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_67b { public void badSink(CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_67a.Container dataContainer , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataContainer.containerOne; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_67a.Container dataContainer , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataContainer.containerOne; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_67a.Container dataContainer , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataContainer.containerOne; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_67b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-67b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 67 Data flow: data passed in a class from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_67b { public void badSink(CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_67a.Container dataContainer , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataContainer.containerOne; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_67a.Container dataContainer , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataContainer.containerOne; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_67a.Container dataContainer , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataContainer.containerOne; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_68a extends AbstractTestCaseServlet { public static String data; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_68b()).badSink(request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_68b()).goodG2BSink(request, response); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_68b()).goodB2GSink(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_68a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-68a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 68 Data flow: data passed as a member variable in the "a" class, which is used by a method in another class in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_68a extends AbstractTestCaseServlet { public static String data; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_68b()).badSink(request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_68b()).goodG2BSink(request, response); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_68b()).goodB2GSink(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_68b { public void badSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_68a.data; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_68a.data; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_68a.data; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_68b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-68b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 68 Data flow: data passed as a member variable in the "a" class, which is used by a method in another class in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_68b { public void badSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_68a.data; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_68a.data; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_68a.data; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_71a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_71b()).badSink((Object)data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_71b()).goodG2BSink((Object)data , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_71b()).goodB2GSink((Object)data , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_71a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-71a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 71 Data flow: data passed as an Object reference argument from one method to another in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_71a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_71b()).badSink((Object)data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_71b()).goodG2BSink((Object)data , request, response ); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_71b()).goodB2GSink((Object)data , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_71b { public void badSink(Object dataObject , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (String)dataObject; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(Object dataObject , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (String)dataObject; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(Object dataObject , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (String)dataObject; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_71b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-71b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 71 Data flow: data passed as an Object reference argument from one method to another in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_71b { public void badSink(Object dataObject , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (String)dataObject; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(Object dataObject , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (String)dataObject; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(Object dataObject , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (String)dataObject; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.Vector; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_72a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } Vector<String> dataVector = new Vector<String>(5); dataVector.add(0, data); dataVector.add(1, data); dataVector.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_72b()).badSink(dataVector , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; Vector<String> dataVector = new Vector<String>(5); dataVector.add(0, data); dataVector.add(1, data); dataVector.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_72b()).goodG2BSink(dataVector , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } Vector<String> dataVector = new Vector<String>(5); dataVector.add(0, data); dataVector.add(1, data); dataVector.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_72b()).goodB2GSink(dataVector , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_72a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-72a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 72 Data flow: data passed in a Vector from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.Vector; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_72a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / Vector<String> dataVector = new Vector<String>(5); dataVector.add(0, data); dataVector.add(1, data); dataVector.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_72b()).badSink(dataVector , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use GoodSource and BadSink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; Vector<String> dataVector = new Vector<String>(5); dataVector.add(0, data); dataVector.add(1, data); dataVector.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_72b()).goodG2BSink(dataVector , request, response ); } / goodB2G() - use BadSource and GoodSink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / Vector<String> dataVector = new Vector<String>(5); dataVector.add(0, data); dataVector.add(1, data); dataVector.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_72b()).goodB2GSink(dataVector , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.Vector; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_72b { public void badSink(Vector<String> dataVector , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataVector.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(Vector<String> dataVector , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataVector.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(Vector<String> dataVector , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataVector.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_72b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-72b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 72 Data flow: data passed in a Vector from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.Vector; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_72b { public void badSink(Vector<String> dataVector , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataVector.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use GoodSource and BadSink / public void goodG2BSink(Vector<String> dataVector , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataVector.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use BadSource and GoodSink / public void goodB2GSink(Vector<String> dataVector , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataVector.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.LinkedList; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_73a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } LinkedList<String> dataLinkedList = new LinkedList<String>(); dataLinkedList.add(0, data); dataLinkedList.add(1, data); dataLinkedList.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_73b()).badSink(dataLinkedList , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; LinkedList<String> dataLinkedList = new LinkedList<String>(); dataLinkedList.add(0, data); dataLinkedList.add(1, data); dataLinkedList.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_73b()).goodG2BSink(dataLinkedList , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } LinkedList<String> dataLinkedList = new LinkedList<String>(); dataLinkedList.add(0, data); dataLinkedList.add(1, data); dataLinkedList.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_73b()).goodB2GSink(dataLinkedList , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_73a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-73a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 73 Data flow: data passed in a LinkedList from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.LinkedList; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_73a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / LinkedList<String> dataLinkedList = new LinkedList<String>(); dataLinkedList.add(0, data); dataLinkedList.add(1, data); dataLinkedList.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_73b()).badSink(dataLinkedList , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use GoodSource and BadSink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; LinkedList<String> dataLinkedList = new LinkedList<String>(); dataLinkedList.add(0, data); dataLinkedList.add(1, data); dataLinkedList.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_73b()).goodG2BSink(dataLinkedList , request, response ); } / goodB2G() - use BadSource and GoodSink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / LinkedList<String> dataLinkedList = new LinkedList<String>(); dataLinkedList.add(0, data); dataLinkedList.add(1, data); dataLinkedList.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_73b()).goodB2GSink(dataLinkedList , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.LinkedList; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_73b { public void badSink(LinkedList<String> dataLinkedList , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataLinkedList.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(LinkedList<String> dataLinkedList , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataLinkedList.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(LinkedList<String> dataLinkedList , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataLinkedList.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_73b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-73b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 73 Data flow: data passed in a LinkedList from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.LinkedList; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_73b { public void badSink(LinkedList<String> dataLinkedList , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataLinkedList.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use GoodSource and BadSink / public void goodG2BSink(LinkedList<String> dataLinkedList , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataLinkedList.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use BadSource and GoodSink / public void goodB2GSink(LinkedList<String> dataLinkedList , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataLinkedList.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.HashMap; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_74a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } HashMap<Integer,String> dataHashMap = new HashMap<Integer,String>(); dataHashMap.put(0, data); dataHashMap.put(1, data); dataHashMap.put(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_74b()).badSink(dataHashMap , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; HashMap<Integer,String> dataHashMap = new HashMap<Integer,String>(); dataHashMap.put(0, data); dataHashMap.put(1, data); dataHashMap.put(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_74b()).goodG2BSink(dataHashMap , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } HashMap<Integer,String> dataHashMap = new HashMap<Integer,String>(); dataHashMap.put(0, data); dataHashMap.put(1, data); dataHashMap.put(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_74b()).goodB2GSink(dataHashMap , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_74a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-74a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 74 Data flow: data passed in a HashMap from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.HashMap; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_74a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / HashMap<Integer,String> dataHashMap = new HashMap<Integer,String>(); dataHashMap.put(0, data); dataHashMap.put(1, data); dataHashMap.put(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_74b()).badSink(dataHashMap , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use GoodSource and BadSink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; HashMap<Integer,String> dataHashMap = new HashMap<Integer,String>(); dataHashMap.put(0, data); dataHashMap.put(1, data); dataHashMap.put(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_74b()).goodG2BSink(dataHashMap , request, response ); } / goodB2G() - use BadSource and GoodSink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / HashMap<Integer,String> dataHashMap = new HashMap<Integer,String>(); dataHashMap.put(0, data); dataHashMap.put(1, data); dataHashMap.put(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_74b()).goodB2GSink(dataHashMap , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.HashMap; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_74b { public void badSink(HashMap<Integer,String> dataHashMap , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataHashMap.get(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(HashMap<Integer,String> dataHashMap , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataHashMap.get(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(HashMap<Integer,String> dataHashMap , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataHashMap.get(2); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_74b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-74b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 74 Data flow: data passed in a HashMap from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.HashMap; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_74b { public void badSink(HashMap<Integer,String> dataHashMap , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataHashMap.get(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use GoodSource and BadSink / public void goodG2BSink(HashMap<Integer,String> dataHashMap , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataHashMap.get(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use BadSource and GoodSink / public void goodB2GSink(HashMap<Integer,String> dataHashMap , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataHashMap.get(2); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.io.ByteArrayOutputStream; import java.io.ObjectOutput; import java.io.ObjectOutputStream; import java.io.IOException; import java.util.logging.Level; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_75a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } ByteArrayOutputStream streamByteArrayOutput = null; ObjectOutput outputObject = null; try { streamByteArrayOutput = new ByteArrayOutputStream() ; outputObject = new ObjectOutputStream(streamByteArrayOutput) ; outputObject.writeObject(data); byte[] dataSerialized = streamByteArrayOutput.toByteArray(); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_75b()).badSink(dataSerialized , request, response ); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in serialization", exceptIO); } finally { try { if (outputObject != null) { outputObject.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectOutputStream", exceptIO); } try { if (streamByteArrayOutput != null) { streamByteArrayOutput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayOutputStream", exceptIO); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; ByteArrayOutputStream streamByteArrayOutput = null; ObjectOutput outputObject = null; try { streamByteArrayOutput = new ByteArrayOutputStream() ; outputObject = new ObjectOutputStream(streamByteArrayOutput) ; outputObject.writeObject(data); byte[] dataSerialized = streamByteArrayOutput.toByteArray(); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_75b()).goodG2BSink(dataSerialized , request, response ); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in serialization", exceptIO); } finally { try { if (outputObject != null) { outputObject.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectOutputStream", exceptIO); } try { if (streamByteArrayOutput != null) { streamByteArrayOutput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayOutputStream", exceptIO); } } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } ByteArrayOutputStream streamByteArrayOutput = null; ObjectOutput outputObject = null; try { streamByteArrayOutput = new ByteArrayOutputStream() ; outputObject = new ObjectOutputStream(streamByteArrayOutput) ; outputObject.writeObject(data); byte[] dataSerialized = streamByteArrayOutput.toByteArray(); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_75b()).goodB2GSink(dataSerialized , request, response ); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in serialization", exceptIO); } finally { try { if (outputObject != null) { outputObject.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectOutputStream", exceptIO); } try { if (streamByteArrayOutput != null) { streamByteArrayOutput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayOutputStream", exceptIO); } } } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_75a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-75a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 75 Data flow: data passed in a serialized object from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.io.ByteArrayOutputStream; import java.io.ObjectOutput; import java.io.ObjectOutputStream; import java.io.IOException; import java.util.logging.Level; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_75a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / / serialize data to a byte array / ByteArrayOutputStream streamByteArrayOutput = null; ObjectOutput outputObject = null; try { streamByteArrayOutput = new ByteArrayOutputStream() ; outputObject = new ObjectOutputStream(streamByteArrayOutput) ; outputObject.writeObject(data); byte[] dataSerialized = streamByteArrayOutput.toByteArray(); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_75b()).badSink(dataSerialized , request, response ); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in serialization", exceptIO); } finally { / clean up stream writing objects / try { if (outputObject != null) { outputObject.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectOutputStream", exceptIO); } try { if (streamByteArrayOutput != null) { streamByteArrayOutput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayOutputStream", exceptIO); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use GoodSource and BadSink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; / serialize data to a byte array / ByteArrayOutputStream streamByteArrayOutput = null; ObjectOutput outputObject = null; try { streamByteArrayOutput = new ByteArrayOutputStream() ; outputObject = new ObjectOutputStream(streamByteArrayOutput) ; outputObject.writeObject(data); byte[] dataSerialized = streamByteArrayOutput.toByteArray(); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_75b()).goodG2BSink(dataSerialized , request, response ); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in serialization", exceptIO); } finally { / clean up stream writing objects / try { if (outputObject != null) { outputObject.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectOutputStream", exceptIO); } try { if (streamByteArrayOutput != null) { streamByteArrayOutput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayOutputStream", exceptIO); } } } / goodB2G() - use BadSource and GoodSink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / / serialize data to a byte array / ByteArrayOutputStream streamByteArrayOutput = null; ObjectOutput outputObject = null; try { streamByteArrayOutput = new ByteArrayOutputStream() ; outputObject = new ObjectOutputStream(streamByteArrayOutput) ; outputObject.writeObject(data); byte[] dataSerialized = streamByteArrayOutput.toByteArray(); (new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_75b()).goodB2GSink(dataSerialized , request, response ); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in serialization", exceptIO); } finally { / clean up stream writing objects / try { if (outputObject != null) { outputObject.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectOutputStream", exceptIO); } try { if (streamByteArrayOutput != null) { streamByteArrayOutput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayOutputStream", exceptIO); } } } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.io.ByteArrayInputStream; import java.io.ObjectInputStream; import java.io.IOException; import java.util.logging.Level; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_75b { public void badSink(byte[] dataSerialized , HttpServletRequest request, HttpServletResponse response) throws Throwable { ByteArrayInputStream streamByteArrayInput = null; ObjectInputStream streamObjectInput = null; try { streamByteArrayInput = new ByteArrayInputStream(dataSerialized); streamObjectInput = new ObjectInputStream(streamByteArrayInput); String data = (String)streamObjectInput.readObject(); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in deserialization", exceptIO); } catch (ClassNotFoundException exceptClassNotFound) { IO.logger.log(Level.WARNING, "ClassNotFoundException in deserialization", exceptClassNotFound); } finally { try { if (streamObjectInput != null) { streamObjectInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectInputStream", exceptIO); } try { if (streamByteArrayInput != null) { streamByteArrayInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayInputStream", exceptIO); } } } public void goodG2BSink(byte[] dataSerialized , HttpServletRequest request, HttpServletResponse response) throws Throwable { ByteArrayInputStream streamByteArrayInput = null; ObjectInputStream streamObjectInput = null; try { streamByteArrayInput = new ByteArrayInputStream(dataSerialized); streamObjectInput = new ObjectInputStream(streamByteArrayInput); String data = (String)streamObjectInput.readObject(); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in deserialization", exceptIO); } catch (ClassNotFoundException exceptClassNotFound) { IO.logger.log(Level.WARNING, "ClassNotFoundException in deserialization", exceptClassNotFound); } finally { try { if (streamObjectInput != null) { streamObjectInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectInputStream", exceptIO); } try { if (streamByteArrayInput != null) { streamByteArrayInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayInputStream", exceptIO); } } } public void goodB2GSink(byte[] dataSerialized , HttpServletRequest request, HttpServletResponse response) throws Throwable { ByteArrayInputStream streamByteArrayInput = null; ObjectInputStream streamObjectInput = null; try { streamByteArrayInput = new ByteArrayInputStream(dataSerialized); streamObjectInput = new ObjectInputStream(streamByteArrayInput); String data = (String)streamObjectInput.readObject(); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in deserialization", exceptIO); } catch (ClassNotFoundException exceptClassNotFound) { IO.logger.log(Level.WARNING, "ClassNotFoundException in deserialization", exceptClassNotFound); } finally { try { if (streamObjectInput != null) { streamObjectInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectInputStream", exceptIO); } try { if (streamByteArrayInput != null) { streamByteArrayInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayInputStream", exceptIO); } } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_75b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-75b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 75 Data flow: data passed in a serialized object from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.io.ByteArrayInputStream; import java.io.ObjectInputStream; import java.io.IOException; import java.util.logging.Level; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_75b { public void badSink(byte[] dataSerialized , HttpServletRequest request, HttpServletResponse response) throws Throwable { / unserialize data / ByteArrayInputStream streamByteArrayInput = null; ObjectInputStream streamObjectInput = null; try { streamByteArrayInput = new ByteArrayInputStream(dataSerialized); streamObjectInput = new ObjectInputStream(streamByteArrayInput); String data = (String)streamObjectInput.readObject(); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in deserialization", exceptIO); } catch (ClassNotFoundException exceptClassNotFound) { IO.logger.log(Level.WARNING, "ClassNotFoundException in deserialization", exceptClassNotFound); } finally { / clean up stream reading objects / try { if (streamObjectInput != null) { streamObjectInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectInputStream", exceptIO); } try { if (streamByteArrayInput != null) { streamByteArrayInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayInputStream", exceptIO); } } } / goodG2B() - use GoodSource and BadSink / public void goodG2BSink(byte[] dataSerialized , HttpServletRequest request, HttpServletResponse response) throws Throwable { / unserialize data / ByteArrayInputStream streamByteArrayInput = null; ObjectInputStream streamObjectInput = null; try { streamByteArrayInput = new ByteArrayInputStream(dataSerialized); streamObjectInput = new ObjectInputStream(streamByteArrayInput); String data = (String)streamObjectInput.readObject(); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in deserialization", exceptIO); } catch (ClassNotFoundException exceptClassNotFound) { IO.logger.log(Level.WARNING, "ClassNotFoundException in deserialization", exceptClassNotFound); } finally { / clean up stream reading objects / try { if (streamObjectInput != null) { streamObjectInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectInputStream", exceptIO); } try { if (streamByteArrayInput != null) { streamByteArrayInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayInputStream", exceptIO); } } } / goodB2G() - use BadSource and GoodSink / public void goodB2GSink(byte[] dataSerialized , HttpServletRequest request, HttpServletResponse response) throws Throwable { / unserialize data / ByteArrayInputStream streamByteArrayInput = null; ObjectInputStream streamObjectInput = null; try { streamByteArrayInput = new ByteArrayInputStream(dataSerialized); streamObjectInput = new ObjectInputStream(streamByteArrayInput); String data = (String)streamObjectInput.readObject(); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in deserialization", exceptIO); } catch (ClassNotFoundException exceptClassNotFound) { IO.logger.log(Level.WARNING, "ClassNotFoundException in deserialization", exceptClassNotFound); } finally { / clean up stream reading objects */ try { if (streamObjectInput != null) { streamObjectInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectInputStream", exceptIO); } try { if (streamByteArrayInput != null) { streamByteArrayInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayInputStream", exceptIO); } } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_base baseObject = new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_bad(); baseObject.action(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_base baseObject = new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_goodG2B(); baseObject.action(data , request, response); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_base baseObject = new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_goodB2G(); baseObject.action(data , request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-81a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 81 Data flow: data passed in a parameter to an abstract method * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_base baseObject = new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_bad(); baseObject.action(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use GoodSource and BadSink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_base baseObject = new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_goodG2B(); baseObject.action(data , request, response); } / goodB2G() - use BadSource and GoodSink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_base baseObject = new CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_goodB2G(); baseObject.action(data , request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_bad extends CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_base { public void action(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_bad.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-81_bad.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 81 Data flow: data passed in a parameter to an abstract method * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_bad extends CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_base { public void action(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public abstract class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_base { public abstract void action(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable; } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_base.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-81_base.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 81 Data flow: data passed in a parameter to an abstract method * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.*; public abstract class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_base { public abstract void action(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable; }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_goodB2G extends CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_base { public void action(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_goodB2G.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-81_goodB2G.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 81 Data flow: data passed in a parameter to an abstract method * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_goodB2G extends CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_base { public void action(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_goodG2B extends CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_base { public void action(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_goodG2B.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-81_goodG2B.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 81 Data flow: data passed in a parameter to an abstract method * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_goodG2B extends CWE113_HTTP_Response_Splitting__console_readLine_addCookieServlet_81_base { public void action(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_01 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_01.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-01.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 01 Baseline * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_01 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_02 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (true) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (false) { data = null; } else { data = "foo"; } if (true) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { data = "foo"; } else { data = null; } if (true) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (false) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (true) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_02.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-02.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 02 Control flow: if(true) and if(false) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_02 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (true) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first true to false / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (false) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (true) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (true) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second true to false / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (false) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (true) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_03 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (5==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5!=5) { data = null; } else { data = "foo"; } if (5==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { data = "foo"; } else { data = null; } if (5==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (5!=5) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (5==5) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_03.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-03.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 03 Control flow: if(5==5) and if(5!=5) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_03 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (5==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first 5==5 to 5!=5 / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (5==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (5==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second 5==5 to 5!=5 / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (5!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (5==5) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_04 extends AbstractTestCaseServlet { private static final boolean PRIVATE_STATIC_FINAL_TRUE = true; private static final boolean PRIVATE_STATIC_FINAL_FALSE = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (PRIVATE_STATIC_FINAL_TRUE) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FALSE) { data = null; } else { data = "foo"; } if (PRIVATE_STATIC_FINAL_TRUE) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { data = "foo"; } else { data = null; } if (PRIVATE_STATIC_FINAL_TRUE) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (PRIVATE_STATIC_FINAL_FALSE) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (PRIVATE_STATIC_FINAL_TRUE) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_04.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-04.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 04 Control flow: if(PRIVATE_STATIC_FINAL_TRUE) and if(PRIVATE_STATIC_FINAL_FALSE) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_04 extends AbstractTestCaseServlet { / The two variables below are declared "final", so a tool should * be able to identify that reads of these will always return their * initialized values. / private static final boolean PRIVATE_STATIC_FINAL_TRUE = true; private static final boolean PRIVATE_STATIC_FINAL_FALSE = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_TRUE) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first PRIVATE_STATIC_FINAL_TRUE to PRIVATE_STATIC_FINAL_FALSE / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FALSE) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (PRIVATE_STATIC_FINAL_TRUE) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_TRUE) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second PRIVATE_STATIC_FINAL_TRUE to PRIVATE_STATIC_FINAL_FALSE / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_FALSE) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_TRUE) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_05 extends AbstractTestCaseServlet { private boolean privateTrue = true; private boolean privateFalse = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (privateTrue) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFalse) { data = null; } else { data = "foo"; } if (privateTrue) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { data = "foo"; } else { data = null; } if (privateTrue) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (privateFalse) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (privateTrue) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_05.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-05.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 05 Control flow: if(privateTrue) and if(privateFalse) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_05 extends AbstractTestCaseServlet { / The two variables below are not defined as "final", but are never * assigned any other value, so a tool should be able to identify that * reads of these will always return their initialized values. / private boolean privateTrue = true; private boolean privateFalse = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateTrue) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first privateTrue to privateFalse / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFalse) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (privateTrue) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateTrue) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second privateTrue to privateFalse / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateFalse) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateTrue) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_06 extends AbstractTestCaseServlet { private static final int PRIVATE_STATIC_FINAL_FIVE = 5; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (PRIVATE_STATIC_FINAL_FIVE==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE!=5) { data = null; } else { data = "foo"; } if (PRIVATE_STATIC_FINAL_FIVE==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { data = "foo"; } else { data = null; } if (PRIVATE_STATIC_FINAL_FIVE==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (PRIVATE_STATIC_FINAL_FIVE!=5) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (PRIVATE_STATIC_FINAL_FIVE==5) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_06.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-06.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 06 Control flow: if(PRIVATE_STATIC_FINAL_FIVE==5) and if(PRIVATE_STATIC_FINAL_FIVE!=5) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_06 extends AbstractTestCaseServlet { / The variable below is declared "final", so a tool should be able * to identify that reads of this will always give its initialized * value. / private static final int PRIVATE_STATIC_FINAL_FIVE = 5; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_FIVE==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first PRIVATE_STATIC_FINAL_FIVE==5 to PRIVATE_STATIC_FINAL_FIVE!=5 / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (PRIVATE_STATIC_FINAL_FIVE==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_FIVE==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second PRIVATE_STATIC_FINAL_FIVE==5 to PRIVATE_STATIC_FINAL_FIVE!=5 / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_FIVE!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_FIVE==5) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_07 extends AbstractTestCaseServlet { private int privateFive = 5; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (privateFive==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive!=5) { data = null; } else { data = "foo"; } if (privateFive==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { data = "foo"; } else { data = null; } if (privateFive==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (privateFive!=5) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (privateFive==5) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_07.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-07.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 07 Control flow: if(privateFive==5) and if(privateFive!=5) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_07 extends AbstractTestCaseServlet { / The variable below is not declared "final", but is never assigned * any other value so a tool should be able to identify that reads of * this will always give its initialized value. / private int privateFive = 5; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateFive==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first privateFive==5 to privateFive!=5 / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (privateFive==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateFive==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second privateFive==5 to privateFive!=5 / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateFive!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateFive==5) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_08 extends AbstractTestCaseServlet { private boolean privateReturnsTrue() { return true; } private boolean privateReturnsFalse() { return false; } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (privateReturnsTrue()) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsFalse()) { data = null; } else { data = "foo"; } if (privateReturnsTrue()) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { data = "foo"; } else { data = null; } if (privateReturnsTrue()) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (privateReturnsFalse()) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (privateReturnsTrue()) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_08.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-08.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 08 Control flow: if(privateReturnsTrue()) and if(privateReturnsFalse()) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_08 extends AbstractTestCaseServlet { / The methods below always return the same value, so a tool * should be able to figure out that every call to these * methods will return true or return false. / private boolean privateReturnsTrue() { return true; } private boolean privateReturnsFalse() { return false; } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateReturnsTrue()) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first privateReturnsTrue() to privateReturnsFalse() / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsFalse()) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (privateReturnsTrue()) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateReturnsTrue()) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second privateReturnsTrue() to privateReturnsFalse() / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateReturnsFalse()) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateReturnsTrue()) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_09 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (IO.STATIC_FINAL_TRUE) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FALSE) { data = null; } else { data = "foo"; } if (IO.STATIC_FINAL_TRUE) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { data = "foo"; } else { data = null; } if (IO.STATIC_FINAL_TRUE) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (IO.STATIC_FINAL_FALSE) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (IO.STATIC_FINAL_TRUE) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_09.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-09.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 09 Control flow: if(IO.STATIC_FINAL_TRUE) and if(IO.STATIC_FINAL_FALSE) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_09 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_TRUE) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first IO.STATIC_FINAL_TRUE to IO.STATIC_FINAL_FALSE / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FALSE) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (IO.STATIC_FINAL_TRUE) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_TRUE) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second IO.STATIC_FINAL_TRUE to IO.STATIC_FINAL_FALSE / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_FALSE) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_TRUE) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_10 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (IO.staticTrue) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFalse) { data = null; } else { data = "foo"; } if (IO.staticTrue) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { data = "foo"; } else { data = null; } if (IO.staticTrue) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (IO.staticFalse) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (IO.staticTrue) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_10.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-10.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 10 Control flow: if(IO.staticTrue) and if(IO.staticFalse) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_10 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticTrue) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first IO.staticTrue to IO.staticFalse / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFalse) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (IO.staticTrue) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticTrue) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second IO.staticTrue to IO.staticFalse / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticFalse) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticTrue) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_11 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if(IO.staticReturnsTrue()) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsFalse()) { data = null; } else { data = "foo"; } if (IO.staticReturnsTrue()) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { data = "foo"; } else { data = null; } if (IO.staticReturnsTrue()) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (IO.staticReturnsFalse()) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (IO.staticReturnsTrue()) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_11.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-11.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 11 Control flow: if(IO.staticReturnsTrue()) and if(IO.staticReturnsFalse()) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_11 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if(IO.staticReturnsTrue()) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first IO.staticReturnsTrue() to IO.staticReturnsFalse() / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsFalse()) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (IO.staticReturnsTrue()) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticReturnsTrue()) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second IO.staticReturnsTrue() to IO.staticReturnsFalse() / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticReturnsFalse()) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticReturnsTrue()) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_12 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if(IO.staticReturnsTrueOrFalse()) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = "foo"; } if(IO.staticReturnsTrueOrFalse()) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if(IO.staticReturnsTrueOrFalse()) { data = "foo"; } else { data = "foo"; } if(IO.staticReturnsTrueOrFalse()) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } else { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if(IO.staticReturnsTrueOrFalse()) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } if(IO.staticReturnsTrueOrFalse()) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_12.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-12.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 12 Control flow: if(IO.staticReturnsTrueOrFalse()) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_12 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if(IO.staticReturnsTrueOrFalse()) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / FIX: Use a hardcoded string / data = "foo"; } if(IO.staticReturnsTrueOrFalse()) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B() - use goodsource and badsink by changing the first "if" so that * both branches use the GoodSource / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if(IO.staticReturnsTrueOrFalse()) { / FIX: Use a hardcoded string / data = "foo"; } else { / FIX: Use a hardcoded string / data = "foo"; } if(IO.staticReturnsTrueOrFalse()) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } else { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G() - use badsource and goodsink by changing the second "if" so that * both branches use the GoodSink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if(IO.staticReturnsTrueOrFalse()) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } if(IO.staticReturnsTrueOrFalse()) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_13 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (IO.STATIC_FINAL_FIVE==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE!=5) { data = null; } else { data = "foo"; } if (IO.STATIC_FINAL_FIVE==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { data = "foo"; } else { data = null; } if (IO.STATIC_FINAL_FIVE==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (IO.STATIC_FINAL_FIVE!=5) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (IO.STATIC_FINAL_FIVE==5) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_13.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-13.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 13 Control flow: if(IO.STATIC_FINAL_FIVE==5) and if(IO.STATIC_FINAL_FIVE!=5) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_13 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_FIVE==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first IO.STATIC_FINAL_FIVE==5 to IO.STATIC_FINAL_FIVE!=5 / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (IO.STATIC_FINAL_FIVE==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_FIVE==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second IO.STATIC_FINAL_FIVE==5 to IO.STATIC_FINAL_FIVE!=5 / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_FIVE!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_FIVE==5) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_14 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (IO.staticFive==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive!=5) { data = null; } else { data = "foo"; } if (IO.staticFive==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { data = "foo"; } else { data = null; } if (IO.staticFive==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (IO.staticFive!=5) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } } else { data = null; } if (IO.staticFive==5) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_14.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-14.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 14 Control flow: if(IO.staticFive==5) and if(IO.staticFive!=5) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_14 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticFive==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first IO.staticFive==5 to IO.staticFive!=5 / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (IO.staticFive==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticFive==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second IO.staticFive==5 to IO.staticFive!=5 / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticFive!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticFive==5) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_15 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } break; default: data = null; break; } switch (7) { case 7: if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } break; default: IO.writeLine("Benign, fixed string"); break; } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (5) { case 6: data = null; break; default: data = "foo"; break; } switch (7) { case 7: if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } break; default: IO.writeLine("Benign, fixed string"); break; } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: data = "foo"; break; default: data = null; break; } switch (7) { case 7: if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } break; default: IO.writeLine("Benign, fixed string"); break; } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } break; default: data = null; break; } switch (8) { case 7: IO.writeLine("Benign, fixed string"); break; default: if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } break; } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } break; default: data = null; break; } switch (7) { case 7: if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } break; default: IO.writeLine("Benign, fixed string"); break; } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_15.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-15.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 15 Control flow: switch(6) and switch(7) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_15 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; break; } switch (7) { case 7: / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); break; } } / goodG2B1() - use goodsource and badsink by changing the first switch to switch(5) / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (5) { case 6: / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; break; default: / FIX: Use a hardcoded string / data = "foo"; break; } switch (7) { case 7: / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); break; } } / goodG2B2() - use goodsource and badsink by reversing the blocks in the first switch / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: / FIX: Use a hardcoded string / data = "foo"; break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; break; } switch (7) { case 7: / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); break; } } / goodB2G1() - use badsource and goodsink by changing the second switch to switch(8) / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; break; } switch (8) { case 7: / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); break; default: / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } break; } } / goodB2G2() - use badsource and goodsink by reversing the blocks in the second switch / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; break; } switch (7) { case 7: / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); break; } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_16 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; while (true) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } break; } while (true) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } break; } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; while (true) { data = "foo"; break; } while (true) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } break; } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; while (true) { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } break; } while (true) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } break; } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_16.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-16.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 16 Control flow: while(true) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_16 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; while (true) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / break; } while (true) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } break; } } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; while (true) { / FIX: Use a hardcoded string / data = "foo"; break; } while (true) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } break; } } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; while (true) { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / break; } while (true) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } break; } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_17 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } for (int j = 0; j < 1; j++) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; for (int j = 0; j < 1; j++) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } for (int k = 0; k < 1; k++) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_17.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-17.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 17 Control flow: for loops * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_17 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / We need to have one source outside of a for loop in order * to prevent the Java compiler from generating an error because * data is uninitialized / data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / for (int j = 0; j < 1; j++) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; for (int j = 0; j < 1; j++) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G() - use badsource and goodsink/ private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / for (int k = 0; k < 1; k++) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_21 extends AbstractTestCaseServlet { private boolean badPrivate = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } badPrivate = true; badSink(data , request, response); } private void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (badPrivate) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private boolean goodB2G1Private = false; private boolean goodB2G2Private = false; private boolean goodG2BPrivate = false; public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodB2G1(request, response); goodB2G2(request, response); goodG2B(request, response); } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } goodB2G1Private = false; goodB2G1Sink(data , request, response); } private void goodB2G1Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodB2G1Private) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } goodB2G2Private = true; goodB2G2Sink(data , request, response); } private void goodB2G2Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodB2G2Private) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; goodG2BPrivate = true; goodG2BSink(data , request, response); } private void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodG2BPrivate) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_21.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-21.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 21 Control flow: Flow controlled by value of a private variable. All functions contained in one file. * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_21 extends AbstractTestCaseServlet { / The variable below is used to drive control flow in the sink function / private boolean badPrivate = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / badPrivate = true; badSink(data , request, response); } private void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (badPrivate) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / The variables below are used to drive control flow in the sink functions. / private boolean goodB2G1Private = false; private boolean goodB2G2Private = false; private boolean goodG2BPrivate = false; public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodB2G1(request, response); goodB2G2(request, response); goodG2B(request, response); } / goodB2G1() - use BadSource and GoodSink by setting the variable to false instead of true / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / goodB2G1Private = false; goodB2G1Sink(data , request, response); } private void goodB2G1Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodB2G1Private) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use BadSource and GoodSink by reversing the blocks in the if in the sink function / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / goodB2G2Private = true; goodB2G2Sink(data , request, response); } private void goodB2G2Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodB2G2Private) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B() - use GoodSource and BadSink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; goodG2BPrivate = true; goodG2BSink(data , request, response); } private void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodG2BPrivate) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22a extends AbstractTestCaseServlet { public static boolean badPublicStatic = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } badPublicStatic = true; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22b()).badSink(data , request, response); } public static boolean goodB2G1PublicStatic = false; public static boolean goodB2G2PublicStatic = false; public static boolean goodG2BPublicStatic = false; public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodB2G1(request, response); goodB2G2(request, response); goodG2B(request, response); } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } goodB2G1PublicStatic = false; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22b()).goodB2G1Sink(data , request, response); } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } goodB2G2PublicStatic = true; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22b()).goodB2G2Sink(data , request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = "foo"; goodG2BPublicStatic = true; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22b()).goodG2BSink(data , request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-22a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 22 Control flow: Flow controlled by value of a public static variable. Sink functions are in a separate file from sources. * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22a extends AbstractTestCaseServlet { / The public static variable below is used to drive control flow in the sink function. * The public static variable mimics a global variable in the C/C++ language family. / public static boolean badPublicStatic = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / badPublicStatic = true; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22b()).badSink(data , request, response); } / The public static variables below are used to drive control flow in the sink functions. * The public static variable mimics a global variable in the C/C++ language family. / public static boolean goodB2G1PublicStatic = false; public static boolean goodB2G2PublicStatic = false; public static boolean goodG2BPublicStatic = false; public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodB2G1(request, response); goodB2G2(request, response); goodG2B(request, response); } / goodB2G1() - use badsource and goodsink by setting the static variable to false instead of true / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / goodB2G1PublicStatic = false; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22b()).goodB2G1Sink(data , request, response); } / goodB2G2() - use badsource and goodsink by reversing the blocks in the if in the sink function / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / goodB2G2PublicStatic = true; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22b()).goodB2G2Sink(data , request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; / FIX: Use a hardcoded string / data = "foo"; goodG2BPublicStatic = true; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22b()).goodG2BSink(data , request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22a.badPublicStatic) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } else { data = null; } } public void goodB2G1Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22a.goodB2G1PublicStatic) { data = null; } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void goodB2G2Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22a.goodB2G2PublicStatic) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } else { data = null; } } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22a.goodG2BPublicStatic) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } else { data = null; } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-22b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 22 Control flow: Flow controlled by value of a public static variable. Sink functions are in a separate file from sources. * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22a.badPublicStatic) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } } / goodB2G1() - use badsource and goodsink by setting the static variable to false instead of true / public void goodB2G1Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22a.goodB2G1PublicStatic) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing the blocks in the if in the sink function / public void goodB2G2Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22a.goodB2G2PublicStatic) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_22a.goodG2BPublicStatic) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors */ data = null; } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_31 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } dataCopy = data; } { String data = dataCopy; if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; data = "foo"; dataCopy = data; } { String data = dataCopy; if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } dataCopy = data; } { String data = dataCopy; if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_31.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-31.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 31 Data flow: make a copy of data within the same method * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_31 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / dataCopy = data; } { String data = dataCopy; / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; / FIX: Use a hardcoded string / data = "foo"; dataCopy = data; } { String data = dataCopy; / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / dataCopy = data; } { String data = dataCopy; / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_41 extends AbstractTestCaseServlet { private void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } badSink(data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; goodG2BSink(data , request, response ); } private void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } goodB2GSink(data , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_41.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-41.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 41 Data flow: data passed as an argument from one method to another in the same class * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_41 extends AbstractTestCaseServlet { private void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / badSink(data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; goodG2BSink(data , request, response ); } private void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / goodB2GSink(data , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_42 extends AbstractTestCaseServlet { private String badSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } return data; } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = badSource(request, response); if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } private String goodG2BSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; return data; } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = goodG2BSource(request, response); if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } private String goodB2GSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } return data; } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = goodB2GSource(request, response); if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_42.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-42.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 42 Data flow: data returned from one method to another in the same class * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_42 extends AbstractTestCaseServlet { private String badSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / return data; } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = badSource(request, response); / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodG2B() - use goodsource and badsink / private String goodG2BSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; return data; } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = goodG2BSource(request, response); / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use badsource and goodsink / private String goodB2GSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / return data; } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = goodB2GSource(request, response); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_45 extends AbstractTestCaseServlet { private String dataBad; private String dataGoodG2B; private String dataGoodB2G; private void badSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataBad; if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } dataBad = data; badSink(request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2BSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataGoodG2B; if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; dataGoodG2B = data; goodG2BSink(request, response); } private void goodB2GSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataGoodB2G; if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } dataGoodB2G = data; goodB2GSink(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_45.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-45.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 45 Data flow: data passed as a private class member variable from one function to another in the same class * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_45 extends AbstractTestCaseServlet { private String dataBad; private String dataGoodG2B; private String dataGoodB2G; private void badSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataBad; / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / dataBad = data; badSink(request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2BSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataGoodG2B; / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; dataGoodG2B = data; goodG2BSink(request, response); } private void goodB2GSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataGoodB2G; / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / dataGoodB2G = data; goodB2GSink(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_51a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_51b()).badSink(data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_51b()).goodG2BSink(data , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_51b()).goodB2GSink(data , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_51a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-51a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 51 Data flow: data passed as an argument from one function to another in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_51a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_51b()).badSink(data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_51b()).goodG2BSink(data , request, response ); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_51b()).goodB2GSink(data , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_51b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_51b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-51b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 51 Data flow: data passed as an argument from one function to another in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_51b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_52a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_52b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_52b()).goodG2BSink(data , request, response); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_52b()).goodB2GSink(data , request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_52a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-52a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 52 Data flow: data passed as an argument from one method to another to another in three different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_52a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_52b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_52b()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_52b()).goodB2GSink(data , request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_52b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_52c()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_52c()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_52c()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_52b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-52b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 52 Data flow: data passed as an argument from one method to another to another in three different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_52b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_52c()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_52c()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_52c()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_52c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_52c.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-52c.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 52 Data flow: data passed as an argument from one method to another to another in three different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_52c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53b()).goodG2BSink(data , request, response); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53b()).goodB2GSink(data , request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-53a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 53 Data flow: data passed as an argument from one method through two others to a fourth; all four functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53b()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53b()).goodB2GSink(data , request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53c()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53c()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53c()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-53b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 53 Data flow: data passed as an argument from one method through two others to a fourth; all four functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53c()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53c()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53c()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53d()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53d()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53d()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53c.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-53c.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 53 Data flow: data passed as an argument from one method through two others to a fourth; all four functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53d()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53d()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53d()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53d { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53d.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-53d.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 53 Data flow: data passed as an argument from one method through two others to a fourth; all four functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_53d { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54b()).goodG2BSink(data , request, response); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54b()).goodB2GSink(data , request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-54a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 54 Data flow: data passed as an argument from one method through three others to a fifth; all five functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54b()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54b()).goodB2GSink(data , request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54c()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54c()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54c()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-54b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 54 Data flow: data passed as an argument from one method through three others to a fifth; all five functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54c()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54c()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54c()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54d()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54d()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54d()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54c.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-54c.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 54 Data flow: data passed as an argument from one method through three others to a fifth; all five functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54d()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54d()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54d()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54d { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54e()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54e()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54e()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54d.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-54d.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 54 Data flow: data passed as an argument from one method through three others to a fifth; all five functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54d { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54e()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54e()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54e()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54e { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54e.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-54e.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 54 Data flow: data passed as an argument from one method through three others to a fifth; all five functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_54e { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_61a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_61b()).badSource(request, response); if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_61b()).goodG2BSource(request, response); if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_61b()).goodB2GSource(request, response); if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_61a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-61a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 61 Data flow: data returned from one method to another in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_61a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_61b()).badSource(request, response); / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_61b()).goodG2BSource(request, response); / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_61b()).goodB2GSource(request, response); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_61b { public String badSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } return data; } public String goodG2BSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; return data; } public String goodB2GSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } return data; } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_61b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-61b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 61 Data flow: data returned from one method to another in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_61b { public String badSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / return data; } / goodG2B() - use goodsource and badsink / public String goodG2BSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; return data; } / goodB2G() - use badsource and goodsink / public String goodB2GSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception */ return data; } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_66a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } String[] dataArray = new String[5]; dataArray[2] = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_66b()).badSink(dataArray , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; String[] dataArray = new String[5]; dataArray[2] = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_66b()).goodG2BSink(dataArray , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } String[] dataArray = new String[5]; dataArray[2] = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_66b()).goodB2GSink(dataArray , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_66a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-66a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 66 Data flow: data passed in an array from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_66a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / String[] dataArray = new String[5]; dataArray[2] = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_66b()).badSink(dataArray , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; String[] dataArray = new String[5]; dataArray[2] = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_66b()).goodG2BSink(dataArray , request, response ); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / String[] dataArray = new String[5]; dataArray[2] = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_66b()).goodB2GSink(dataArray , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_66b { public void badSink(String dataArray[] , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataArray[2]; if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodG2BSink(String dataArray[] , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataArray[2]; if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodB2GSink(String dataArray[] , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataArray[2]; if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_66b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-66b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 66 Data flow: data passed in an array from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_66b { public void badSink(String dataArray[] , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataArray[2]; / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String dataArray[] , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataArray[2]; / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(String dataArray[] , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataArray[2]; / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_67a extends AbstractTestCaseServlet { static class Container { public String containerOne; } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } Container dataContainer = new Container(); dataContainer.containerOne = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_67b()).badSink(dataContainer , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; Container dataContainer = new Container(); dataContainer.containerOne = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_67b()).goodG2BSink(dataContainer , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } Container dataContainer = new Container(); dataContainer.containerOne = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_67b()).goodB2GSink(dataContainer , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_67a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-67a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 67 Data flow: data passed in a class from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_67a extends AbstractTestCaseServlet { static class Container { public String containerOne; } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / Container dataContainer = new Container(); dataContainer.containerOne = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_67b()).badSink(dataContainer , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; Container dataContainer = new Container(); dataContainer.containerOne = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_67b()).goodG2BSink(dataContainer , request, response ); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / Container dataContainer = new Container(); dataContainer.containerOne = data; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_67b()).goodB2GSink(dataContainer , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_67b { public void badSink(CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_67a.Container dataContainer , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataContainer.containerOne; if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodG2BSink(CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_67a.Container dataContainer , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataContainer.containerOne; if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodB2GSink(CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_67a.Container dataContainer , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataContainer.containerOne; if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_67b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-67b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 67 Data flow: data passed in a class from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_67b { public void badSink(CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_67a.Container dataContainer , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataContainer.containerOne; / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_67a.Container dataContainer , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataContainer.containerOne; / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_67a.Container dataContainer , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataContainer.containerOne; / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_68a extends AbstractTestCaseServlet { public static String data; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_68b()).badSink(request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_68b()).goodG2BSink(request, response); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_68b()).goodB2GSink(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_68a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-68a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 68 Data flow: data passed as a member variable in the "a" class, which is used by a method in another class in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_68a extends AbstractTestCaseServlet { public static String data; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_68b()).badSink(request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_68b()).goodG2BSink(request, response); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_68b()).goodB2GSink(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_68b { public void badSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_68a.data; if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodG2BSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_68a.data; if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodB2GSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_68a.data; if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_68b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-68b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 68 Data flow: data passed as a member variable in the "a" class, which is used by a method in another class in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_68b { public void badSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_68a.data; / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_68a.data; / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_68a.data; / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_71a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_71b()).badSink((Object)data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_71b()).goodG2BSink((Object)data , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_71b()).goodB2GSink((Object)data , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_71a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-71a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 71 Data flow: data passed as an Object reference argument from one method to another in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_71a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_71b()).badSink((Object)data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_71b()).goodG2BSink((Object)data , request, response ); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_71b()).goodB2GSink((Object)data , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_71b { public void badSink(Object dataObject , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (String)dataObject; if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodG2BSink(Object dataObject , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (String)dataObject; if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodB2GSink(Object dataObject , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (String)dataObject; if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_71b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-71b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 71 Data flow: data passed as an Object reference argument from one method to another in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_71b { public void badSink(Object dataObject , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (String)dataObject; / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(Object dataObject , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (String)dataObject; / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(Object dataObject , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (String)dataObject; / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.Vector; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_72a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } Vector<String> dataVector = new Vector<String>(5); dataVector.add(0, data); dataVector.add(1, data); dataVector.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_72b()).badSink(dataVector , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; Vector<String> dataVector = new Vector<String>(5); dataVector.add(0, data); dataVector.add(1, data); dataVector.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_72b()).goodG2BSink(dataVector , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } Vector<String> dataVector = new Vector<String>(5); dataVector.add(0, data); dataVector.add(1, data); dataVector.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_72b()).goodB2GSink(dataVector , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_72a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-72a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 72 Data flow: data passed in a Vector from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.Vector; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_72a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / Vector<String> dataVector = new Vector<String>(5); dataVector.add(0, data); dataVector.add(1, data); dataVector.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_72b()).badSink(dataVector , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use GoodSource and BadSink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; Vector<String> dataVector = new Vector<String>(5); dataVector.add(0, data); dataVector.add(1, data); dataVector.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_72b()).goodG2BSink(dataVector , request, response ); } / goodB2G() - use BadSource and GoodSink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / Vector<String> dataVector = new Vector<String>(5); dataVector.add(0, data); dataVector.add(1, data); dataVector.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_72b()).goodB2GSink(dataVector , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.Vector; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_72b { public void badSink(Vector<String> dataVector , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataVector.remove(2); if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodG2BSink(Vector<String> dataVector , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataVector.remove(2); if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodB2GSink(Vector<String> dataVector , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataVector.remove(2); if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_72b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-72b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 72 Data flow: data passed in a Vector from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.Vector; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_72b { public void badSink(Vector<String> dataVector , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataVector.remove(2); / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodG2B() - use GoodSource and BadSink / public void goodG2BSink(Vector<String> dataVector , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataVector.remove(2); / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use BadSource and GoodSink / public void goodB2GSink(Vector<String> dataVector , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataVector.remove(2); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.LinkedList; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_73a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } LinkedList<String> dataLinkedList = new LinkedList<String>(); dataLinkedList.add(0, data); dataLinkedList.add(1, data); dataLinkedList.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_73b()).badSink(dataLinkedList , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; LinkedList<String> dataLinkedList = new LinkedList<String>(); dataLinkedList.add(0, data); dataLinkedList.add(1, data); dataLinkedList.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_73b()).goodG2BSink(dataLinkedList , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } LinkedList<String> dataLinkedList = new LinkedList<String>(); dataLinkedList.add(0, data); dataLinkedList.add(1, data); dataLinkedList.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_73b()).goodB2GSink(dataLinkedList , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_73a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-73a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 73 Data flow: data passed in a LinkedList from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.LinkedList; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_73a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / LinkedList<String> dataLinkedList = new LinkedList<String>(); dataLinkedList.add(0, data); dataLinkedList.add(1, data); dataLinkedList.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_73b()).badSink(dataLinkedList , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use GoodSource and BadSink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; LinkedList<String> dataLinkedList = new LinkedList<String>(); dataLinkedList.add(0, data); dataLinkedList.add(1, data); dataLinkedList.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_73b()).goodG2BSink(dataLinkedList , request, response ); } / goodB2G() - use BadSource and GoodSink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / LinkedList<String> dataLinkedList = new LinkedList<String>(); dataLinkedList.add(0, data); dataLinkedList.add(1, data); dataLinkedList.add(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_73b()).goodB2GSink(dataLinkedList , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.LinkedList; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_73b { public void badSink(LinkedList<String> dataLinkedList , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataLinkedList.remove(2); if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodG2BSink(LinkedList<String> dataLinkedList , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataLinkedList.remove(2); if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodB2GSink(LinkedList<String> dataLinkedList , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataLinkedList.remove(2); if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_73b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-73b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 73 Data flow: data passed in a LinkedList from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.LinkedList; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_73b { public void badSink(LinkedList<String> dataLinkedList , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataLinkedList.remove(2); / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodG2B() - use GoodSource and BadSink / public void goodG2BSink(LinkedList<String> dataLinkedList , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataLinkedList.remove(2); / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use BadSource and GoodSink / public void goodB2GSink(LinkedList<String> dataLinkedList , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataLinkedList.remove(2); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.HashMap; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_74a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } HashMap<Integer,String> dataHashMap = new HashMap<Integer,String>(); dataHashMap.put(0, data); dataHashMap.put(1, data); dataHashMap.put(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_74b()).badSink(dataHashMap , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; HashMap<Integer,String> dataHashMap = new HashMap<Integer,String>(); dataHashMap.put(0, data); dataHashMap.put(1, data); dataHashMap.put(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_74b()).goodG2BSink(dataHashMap , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } HashMap<Integer,String> dataHashMap = new HashMap<Integer,String>(); dataHashMap.put(0, data); dataHashMap.put(1, data); dataHashMap.put(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_74b()).goodB2GSink(dataHashMap , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_74a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-74a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 74 Data flow: data passed in a HashMap from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.HashMap; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_74a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / HashMap<Integer,String> dataHashMap = new HashMap<Integer,String>(); dataHashMap.put(0, data); dataHashMap.put(1, data); dataHashMap.put(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_74b()).badSink(dataHashMap , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use GoodSource and BadSink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; HashMap<Integer,String> dataHashMap = new HashMap<Integer,String>(); dataHashMap.put(0, data); dataHashMap.put(1, data); dataHashMap.put(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_74b()).goodG2BSink(dataHashMap , request, response ); } / goodB2G() - use BadSource and GoodSink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / HashMap<Integer,String> dataHashMap = new HashMap<Integer,String>(); dataHashMap.put(0, data); dataHashMap.put(1, data); dataHashMap.put(2, data); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_74b()).goodB2GSink(dataHashMap , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.HashMap; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_74b { public void badSink(HashMap<Integer,String> dataHashMap , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataHashMap.get(2); if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodG2BSink(HashMap<Integer,String> dataHashMap , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataHashMap.get(2); if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodB2GSink(HashMap<Integer,String> dataHashMap , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataHashMap.get(2); if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_74b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-74b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 74 Data flow: data passed in a HashMap from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.HashMap; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_74b { public void badSink(HashMap<Integer,String> dataHashMap , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataHashMap.get(2); / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodG2B() - use GoodSource and BadSink / public void goodG2BSink(HashMap<Integer,String> dataHashMap , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataHashMap.get(2); / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use BadSource and GoodSink / public void goodB2GSink(HashMap<Integer,String> dataHashMap , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataHashMap.get(2); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.io.ByteArrayOutputStream; import java.io.ObjectOutput; import java.io.ObjectOutputStream; import java.io.IOException; import java.util.logging.Level; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_75a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } ByteArrayOutputStream streamByteArrayOutput = null; ObjectOutput outputObject = null; try { streamByteArrayOutput = new ByteArrayOutputStream() ; outputObject = new ObjectOutputStream(streamByteArrayOutput) ; outputObject.writeObject(data); byte[] dataSerialized = streamByteArrayOutput.toByteArray(); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_75b()).badSink(dataSerialized , request, response ); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in serialization", exceptIO); } finally { try { if (outputObject != null) { outputObject.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectOutputStream", exceptIO); } try { if (streamByteArrayOutput != null) { streamByteArrayOutput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayOutputStream", exceptIO); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; ByteArrayOutputStream streamByteArrayOutput = null; ObjectOutput outputObject = null; try { streamByteArrayOutput = new ByteArrayOutputStream() ; outputObject = new ObjectOutputStream(streamByteArrayOutput) ; outputObject.writeObject(data); byte[] dataSerialized = streamByteArrayOutput.toByteArray(); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_75b()).goodG2BSink(dataSerialized , request, response ); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in serialization", exceptIO); } finally { try { if (outputObject != null) { outputObject.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectOutputStream", exceptIO); } try { if (streamByteArrayOutput != null) { streamByteArrayOutput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayOutputStream", exceptIO); } } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } ByteArrayOutputStream streamByteArrayOutput = null; ObjectOutput outputObject = null; try { streamByteArrayOutput = new ByteArrayOutputStream() ; outputObject = new ObjectOutputStream(streamByteArrayOutput) ; outputObject.writeObject(data); byte[] dataSerialized = streamByteArrayOutput.toByteArray(); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_75b()).goodB2GSink(dataSerialized , request, response ); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in serialization", exceptIO); } finally { try { if (outputObject != null) { outputObject.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectOutputStream", exceptIO); } try { if (streamByteArrayOutput != null) { streamByteArrayOutput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayOutputStream", exceptIO); } } } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_75a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-75a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: console_readLine Read data from the console using readLine() * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 75 Data flow: data passed in a serialized object from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.io.ByteArrayOutputStream; import java.io.ObjectOutput; import java.io.ObjectOutputStream; import java.io.IOException; import java.util.logging.Level; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; public class CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_75a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / / serialize data to a byte array / ByteArrayOutputStream streamByteArrayOutput = null; ObjectOutput outputObject = null; try { streamByteArrayOutput = new ByteArrayOutputStream() ; outputObject = new ObjectOutputStream(streamByteArrayOutput) ; outputObject.writeObject(data); byte[] dataSerialized = streamByteArrayOutput.toByteArray(); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_75b()).badSink(dataSerialized , request, response ); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in serialization", exceptIO); } finally { / clean up stream writing objects / try { if (outputObject != null) { outputObject.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectOutputStream", exceptIO); } try { if (streamByteArrayOutput != null) { streamByteArrayOutput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayOutputStream", exceptIO); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use GoodSource and BadSink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; / serialize data to a byte array / ByteArrayOutputStream streamByteArrayOutput = null; ObjectOutput outputObject = null; try { streamByteArrayOutput = new ByteArrayOutputStream() ; outputObject = new ObjectOutputStream(streamByteArrayOutput) ; outputObject.writeObject(data); byte[] dataSerialized = streamByteArrayOutput.toByteArray(); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_75b()).goodG2BSink(dataSerialized , request, response ); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in serialization", exceptIO); } finally { / clean up stream writing objects / try { if (outputObject != null) { outputObject.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectOutputStream", exceptIO); } try { if (streamByteArrayOutput != null) { streamByteArrayOutput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayOutputStream", exceptIO); } } } / goodB2G() - use BadSource and GoodSink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; / read user input from console with readLine / try { readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data from the console using readLine / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / NOTE: Tools may report a flaw here because buffread and isr are not closed. Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception / / serialize data to a byte array / ByteArrayOutputStream streamByteArrayOutput = null; ObjectOutput outputObject = null; try { streamByteArrayOutput = new ByteArrayOutputStream() ; outputObject = new ObjectOutputStream(streamByteArrayOutput) ; outputObject.writeObject(data); byte[] dataSerialized = streamByteArrayOutput.toByteArray(); (new CWE113_HTTP_Response_Splitting__console_readLine_addHeaderServlet_75b()).goodB2GSink(dataSerialized , request, response ); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in serialization", exceptIO); } finally { / clean up stream writing objects / try { if (outputObject != null) { outputObject.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectOutputStream", exceptIO); } try { if (streamByteArrayOutput != null) { streamByteArrayOutput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayOutputStream", exceptIO); } } } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }