Apache Tomcat 6.0.20 and 5.5.28 unexpected file deletion and/or alteration

Credit: Mark Thomas
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-2000

CVSS Base Score: 5.8/10
Impact Subscore: 4.9/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: None
Integrity impact: Partial
Availability impact: Partial

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 CVE-2009-3548: Apache Tomcat unexpected file deletion and/or alteration 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: When deploying WAR files, the WAR files were not checked for directory traversal attempts. This allows an attacker to create arbitrary content outside of the web root. 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-2009-2901 and CVE-2009-2902. Alternatively, users of all Tomcat versions may mitigate this issue by manually validating the contents of untrusted WAR files before deployment. Example: A WAR file that contains the following entry will overwrite the standard Windows start-up script when deployed on a default Tomcat installation: ../../bin/catalina.bat Credit: This issue was reported to the Apache Tomcat security team by Marc Schoenefeld of the Red Hat Security Response 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/ iQIcBAEBAgAGBQJLXMF6AAoJEBDAHFovYFnniGcP/j9ZyFlLdzcTxJLqqWyAOdUt J1jF8vZTIqkf/vFyrRxLgw9ihaKZQ1wpd9U3vdHulcIsuAeBtiZgIhlXKItJiTLf ImsEl5a3w3Ucp2Z71/IIRxmcffz/zIjgdzmhmnRDEhiHz/wiygpRr7X1M8ZgZVXe itxFDhZu7ccWDTwUkxOoFuG6CWxb6/red3l5CaL4OtcWBTZ1aqQ5M1Io62pWErLI 6F/xuGTvWn4AeXaNEgJOGFZLLyX06WQJSzaJXh/tPqI153mk5Or63m03uJy9wHqa p7ULRvRNSZ57m8L08e397uCjvu4CPGf1Rm0dDDART7UaLF1Q13gP9O6DPCS88wN+ ypgZTERSG9t0iMHZCKNjH1huRJDVPkEJwvGdtH0wGzFwg5S+oJ/J5ETW29dQ/JUR pt1U1Xz6RnzFFgQR4Xomdc4SPysDFOIAexi8dkZPDcafN7YyiMQTRyU3iNRuoaR1 Y32qWfqJrmVDWQ1J4BLYsrLrpgZ0s5ccq6omz36lbH+3blyVPf1th84lWg9GG6lo W3qsnJIpNfxLi9II9sDxbVpUJXLVbJmBexUDR3z9BayowNtBlwMWXEZluctGe2DO hIkNB0D33AJvMD7wY80tnXY/hH3X5Vs+ZePEmu7TQB1KXzTinEbVdNVPF8/8woaL 7iN004jxhnUxQc8Fgwj4 =/B5h -----END PGP SIGNATURE-----



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