Apache Tomcat 6.0.20 and 5.5.28 insecure partial deploy after failed undeploy

2010-01-29 / 2012-01-30
Credit: Mark Thomas
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-264


CVSS Base Score: 4.3/10
Impact Subscore: 2.9/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: Partial
Integrity impact: None
Availability impact: None

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 CVE-2009-2901: Apache Tomcat insecure partial deploy after failed undeploy Severity: Low Vendor: The Apache Software Foundation Versions Affected: Tomcat 5.5.0 to 5.5.28 Tomcat 6.0.0 to 6.0.20 The unsupported Tomcat 3.x, 4.x and 5.0.x versions may be also affected. Description: By default, Tomcat automatically deploys any directories placed in a host's appBase. This behaviour is controlled by the autoDeploy attribute of a host which defaults to true. After a failed undeploy, the remaining files will be deployed as a result of the autodeployment process. Depending on circumstances, files normally protected by one or more security constraints may be deployed without those security constraints, making them accessible without authentication. Mitigation: 6.0.x users should upgrade to 6.0.24 or apply this patch: http://svn.apache.org/viewvc?rev=892815&view=rev 5.5.x users should upgrade to 5.5.29 when released or apply this patch: http://svn.apache.org/viewvc?rev=902650&view=rev Note: the patches also address CVE-2009-2693 and CVE-2009-2902. Alternatively, users of all Tomcat versions may mitigate this issue by manually ensuring that an undeploy removes all files. If one or more files cannot be deleted, it may be necessary to stop Tomcat before the files can be deleted. Credit: This issue was discovered by the Apache Tomcat security team References: [1] http://tomcat.apache.org/security.html Mark Thomas -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQIcBAEBAgAGBQJLXMGYAAoJEBDAHFovYFnnwXgP/RAhAkPwPP9R3S5xM/mtZj+l cQacLI/8FdPOluVUIYNuPP2ti3v2STJyhUMOYVMQIpf7Why4fFiLaIOLZWDS04Gb UfTQfcFIQlh69h3xQBgkEeSHNegxGLRvl8sLrhLTmaLug4qn8JW81sZnO+9PejmD CgZKCq2ALqIvNmEU7nZTz/5xzll88O+b8P5UQqDGM9r1Z8fO8oCUood1n2hVdZAb PoLn7CKqMtb2psGvYWqYDNeB5mRVhHnqUdtQzQy3Sy6C8YBxkmm9HWOZjoAvjMaa X4N5THNyhXwdfNo9r6CClEiaQM6AK+jRl8SyeNiGNgNHT3Knhn9ANVUcRomRXgJm dsKKz0wBN/zVp7ux5FLlK9O/a7VNniYMFRwg71Na9KQY6/oRlxpOU9zgWqI9Co9V LD8g0EWliabOCv3nREDYqwrJq75ffS5TwK8mqWNlW/0gszDex34kVqnS06hMY1HT OK5Ip1cYhUZLlcfwkmN6tBxBozCteO/Nrfh6HEahc0MXVJXbZxDXLvWtDNSrBMSY Hqt9suXYom1rCxtFdBDtgXctAnB4UrADRxC4w/e7kZ+v3MRMtzl1UG/6cJDQtQ9f Iwt51lECjIW6LqEpSIMTs/v5h9ueSPhY/n7GWNloSqCUgA0XL5sw5lYkGsMmS4Sh dkab23FgmsfqGqZYUGzv =vcr6 -----END PGP SIGNATURE-----

References:

http://xforce.iss.net/xforce/xfdb/55856
http://www.vupen.com/english/advisories/2010/0213
http://www.securityfocus.com/bid/37942
http://www.securityfocus.com/archive/1/archive/1/509151/100/0/threaded
http://tomcat.apache.org/security-6.html
http://tomcat.apache.org/security-5.html
http://svn.apache.org/viewvc?rev=902650&view=rev
http://svn.apache.org/viewvc?rev=892815&view=rev
http://securitytracker.com/id?1023503
http://secunia.com/advisories/38346
http://secunia.com/advisories/38316


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