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TITLE:
ModSecurity "SecCacheTransformations" Vulnerability

SECUNIA ADVISORY ID:
SA32146

VERIFY ADVISORY:
http://secunia.com/advisories/32146/

CRITICAL:
Less critical

IMPACT:
Security Bypass

WHERE:
>From remote

SOFTWARE:
ModSecurity 2.x
http://secunia.com/advisories/product/13609/

DESCRIPTION:
A vulnerability has been reported in ModSecurity, which potentially
can be exploited by malicious people to bypass certain security
restrictions.

The vulnerability is caused due to an error within the transformation
caching, which may be exploited to evade ModSecurity under certain
unspecified circumstances.

Successful exploitation requires that "SecCacheTransformations" is
enabled.

Note: It was also reported that this option is unstable and may crash
the web server.

The vulnerability is reported in version 2.5.0 through 2.5.5.

SOLUTION:
Update to version 2.5.6.

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
http://blog.modsecurity.org/2008/08/transformation.html
http://freshmeat.net/projects/modsecurity/?branch_id=34901&release_id=282329

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