Apache Tomcat 9.0.0.M1 Security Manager Persistence Bypass

2016.02.23
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-264


CVSS Base Score: 6.5/10
Impact Subscore: 6.4/10
Exploitability Subscore: 8/10
Exploit range: Remote
Attack complexity: Low
Authentication: Single time
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 CVE-2016-0714 Apache Tomcat Security Manager Bypass Severity: Moderate Vendor: The Apache Software Foundation Versions Affected: - - Apache Tomcat 6.0.0 to 6.0.44 - - Apache Tomcat 7.0.0 to 7.0.67 - - Apache Tomcat 8.0.0.RC1 to 8.0.30 - - Apache Tomcat 9.0.0.M1 - - Earlier, unsupported Tomcat versions may be affected Description: Tomcat provides several session persistence mechanisms. The StandardManager persists session over a restart. The PersistentManager is able to persist sessions to files, a database or a custom Store. The Cluster implementation persists sessions to one or more additional nodes in the cluster. All of these mechanisms could be exploited to bypass a security manager. Session persistence is performed by Tomcat code with the permissions assigned to Tomcat internal code. By placing a carefully crafted object into a session, a malicious web application could trigger the execution of arbitrary code. Mitigation: Users of affected versions should apply one of the following mitigations - - Upgrade to Apache Tomcat 9.0.0.M3 or later (9.0.0.M2 has the fix but was not released) - - Upgrade to Apache Tomcat 8.0.32 or later (8.0.31 has the fix but was not released) - - Upgrade to Apache Tomcat 7.0.68 or later - - Upgrade to Apache Tomcat 6.0.45 or later Credit: This issue was discovered by The Apache Tomcat Security Team. References: [1] http://tomcat.apache.org/security-9.html [2] http://tomcat.apache.org/security-8.html [3] http://tomcat.apache.org/security-7.html [4] http://tomcat.apache.org/security-6.html -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBCAAGBQJWyu9PAAoJEBDAHFovYFnnllEQAMj38sm4FeeXJ2XOK/ODpj2J SLK0VMib2gjRmMfuH15OPyYBIHPaWVD4E3ONiLz/2F9oqVAYfvswQnLfNrJ9k8oF K+ETBoWfyODb8QddYQOd3JpDslrOLPscve6dgnkx/R8hZSPOvsmo8IIG4Bwh5VQM rkAct8EFGpVuQ9ou59F8xSx7fhRMHhNKt8XwsuBIj43MwFv5P8rHhNJDbgC8hSP7 w8yKwrQ7alfeuzwQPegf11YEcauPog4TnD3JAuufcuPQefvDHRAIoKNRCwyvFbRC rVHdsV5AehWaKKHj9Yu2IJB88s+0wXWlH01hG+wYl1jSVxs3CHhhP0FS55vwItWP Igl26iz33esPlzQaVyWf5jOUOYfF0tZel4bDFcQrIQASJKS2vxCuOBgUhr+bReMD I8W1A78EdGXm5IGqmPqHNXn+qAQKfs352eVFiS4vM+5n6wdVThxRzTIt/Op0iz8k rOIm05kkZQedh7utUy4iW59MKHr9xGRQRI1r4/sdKHDIRSlzsfzJVrATqqLPxukg QhG3LL0fO+kKLb526GZOlTaAcT7hM2wdYkLytiUItpMUR8ZfozqIS/nRUPmCfDgW 8QFRZEYIgETUYELbnj9chx0NJOkSH9OICV1U7EergsKsdpXN8uCDRy609ufSPn+W M6wXyzp1l4aE2hnn22gZ =OQbe -----END PGP SIGNATURE-----

References:

http://tomcat.apache.org/security-9.html


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