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TITLE:
mod_perl "path_info" Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA24678

VERIFY ADVISORY:
http://secunia.com/advisories/24678/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
mod_perl 2.x
http://secunia.com/product/2870/
mod_perl 1.x
http://secunia.com/product/5960/

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.

PROVIDED AND/OR DISCOVERED BY:
Alex Solovey

ORIGINAL ADVISORY:
http://www.gossamer-threads.com/lists/modperl/modperl/92739

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