Secunia

Description
D. Matscheko has reported a security issue in Apache Tomcat, which can be exploited by malicious people to bypass certain security restrictions.

If Tomcat is running behind a proxy with context restriction, an error within the handling of certain path delimiters in requests ('2F', '%5C', and '\') can be exploited to bypass the context restrictions and may allow access to non-proxied contexts.

The security issue is reported in versions 5.5.0 to 5.5.21, 5.0.0 to 5.5.0.30, and 6.0.0 to 6.0.9.

Solution
Update to version 5.5.22 or 6.0.10.
Further details available in Customer Area

Provided and/or discovered by
D. Matscheko

Original Advisory
http://www.sec-consult.com/287.html

http://tomcat.apache.org/security-5.html
http://tomcat.apache.org/security-6.html

Deep Links
Links available in Customer Area