mod_perl "path_info" Denial of Service Vulnerability
Secunia Advisory: SA24678
Release Date: 2007-03-29
Last Update: 2007-07-18
Popularity: 9,551 views

Critical:
Moderately critical
Impact: DoS
Where: From remote
Solution Status: Partial Fix

Software:mod_perl 1.x
mod_perl 2.x

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CVE reference:CVE-2007-1349


Description:
A vulnerability has been reported in mod_perl, which potentially can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to a regular expression in "RegistryCooker.pm" (mod_perl 2.x) or "PerlRun.pm" (mod_perl 1.x) that uses the "path_info" variable without properly escaping it. This can be exploited to cause a DoS by sending requests with specially crafted URLs to a vulnerable server.

Solution:
Fixed in the SVN repository and in version 1.30 of the mod_perl 1.x branch.

Provided and/or discovered by:
Alex Solovey

Changelog:
2007-07-18: Updated "Solution" section.

Original Advisory:
http://www.gossamer-threads.com/lists/modperl/modperl/92739


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