28 June 2011
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2011.0673 CVE-2011-2204 Apache Tomcat information disclosure 28 June 2011 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Apache Tomcat Publisher: The Apache Software Foundation Operating System: UNIX variants (UNIX, Linux, OSX) Windows Impact/Access: Access Confidential Data -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2011-2204 - --------------------------BEGIN INCLUDED TEXT-------------------- CVE-2011-2204 Apache Tomcat information disclosure Severity: Low Vendor: The Apache Software Foundation Versions Affected: - - Tomcat 7.0.0 to 7.0.16 - - Tomcat 6.0.0 to 6.0.32 - - Tomcat 5.5.0 to 5.5.33 Earlier, unsupported versions may also be affected Description: When using the MemoryUserDatabase (based on tomcat-users.xml) and creating users via JMX, an exception during the user creation process may trigger an error message in the JMX client that includes the user's password. This error message is also written to the Tomcat logs. User passwords are visible to administrators with JMX access and/or administrators with read access to the tomcat-users.xml file. Users that do not have these permissions but are able to read log files may be able to discover a user's password. Steps to reproduce: The Tomcat security team has been unable to reproduce this error without forcing an exception by modifying the Tomcat source code. In theory, an OutOfMemoryError at exactly the right point could trigger this vulnerability. Mitigation: Users of affected versions should apply one of the following mitigations: - - Don't manage the MemoryUserDatabase via JMX - - Use digested passwords - - Limit access to Tomcat log files - - Upgrade to a Tomcat 7.0.17, 6.0.33 or 5.5.34 or later once released - - Apply the appropriate patch - 7.0.x: http://svn.apache.org/viewvc?rev=1140070&view=rev - 6.0.x: http://svn.apache.org/viewvc?rev=1140071&view=rev - 5.5.x: http://svn.apache.org/viewvc?rev=1140072&view=rev Credit: This issue was identified by Polina Genova and reported privately to the Tomcat Security Team via email@example.com. References: http://tomcat.apache.org/security.html http://tomcat.apache.org/security-7.html http://tomcat.apache.org/security-6.html http://tomcat.apache.org/security-5.html - --------------------------------------------------------------------- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to firstname.lastname@example.org and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBTgkoue4yVqjM2NGpAQLlMQ/+Jlvv+LeLib2Vfb9IkUjmuWKD9avNn7hC paMK/+oZ1xLPkl2SwLFlHU7kC/zZkSj2JJ1fL40Xq2yPwI8Z+MDlJKdMNBr9fxnj qoI7cxishvkNoyiICs+UzgPjBbYQZUg0g39BJYG9zk1cR8dA1XebC8hmhvmUFFX4 skZtIFzIUyJVLasgKHaciSdRrVWZXfD9Od6Ltv8dUpzmQfTOoCuzsK01z2iY7CKw 2+eOrf7JCi4NipK6+8IechMIfHu4kexRUrb2lKs0mpomKD87wfMpo0TqZyD3zD8g wiC4TTFVkdCGMbz4BdtoCG3ttNQx4r1nKkvEOVjeXS50i0TE4PTkKfvjSBaLLMum 5yio4mIEwzIzG9jxe8cDJtIwJaf1OD79GbsEv3M03VVGOg49LLU6O6ikucfPk6D+ QvT+hOjQuUHvdqpxjBUtx5bP3Tjxe4bcsJJu5uPE5FT16lIcJZ17ADx7bDN79RMp m6EPSrBcrEoUgVlI51H9fpZhdX43bcpHAyfG1HyN7m/gWB7xTDNKbu/lTYE5bfCS NtA/wJtSK4rWOGBJGkR8pMNoZ61qAUlQcb+wi7pfETP9Ql7h1JtvrzpiwsQdeNPY sSSOU6slf5OgV6Mzylj21Bug1e0KD3s+kt0//Tfsk1Bl50UlPV2bDozyjB78HZLK i9nn96H/21E= =o1UR -----END PGP SIGNATURE-----