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Apache mod_perl: Denial of Service



Apache mod_perl: Denial of Service
Apache mod_perl: Denial of Service



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Gentoo Linux Security Advisory                           GLSA 200705-04
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http://security.gentoo.org/ 
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  Severity: Normal
     Title: Apache mod_perl: Denial of Service
      Date: May 02, 2007
      Bugs: #172676
        ID: 200705-04

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Synopsis
=======
The mod_perl Apache module is vulnerable to a Denial of Service when
processing regular expressions.

Background
=========
Mod_perl is an Apache module that embeds the Perl interpreter within
the server, allowing Perl-based web-applications to be created.

Affected packages
================
    -------------------------------------------------------------------
     Package              /  Vulnerable  /                  Unaffected
    -------------------------------------------------------------------
  1  www-apache/mod_perl       < 1.30                          >= 1.30
                                                           >= 2.0.3-r1
     www-apache/mod_perl     < 2.0.3-r1                        >= 1.30
                                                           >= 2.0.3-r1

Description
==========
Alex Solvey discovered that the "path_info" variable used in file
RegistryCooker.pm (mod_perl 2.x) or file PerlRun.pm (mod_perl 1.x), is
not properly escaped before being processed.

Impact
=====
A remote attacker could send a specially crafted URL to the vulnerable
server, possibly resulting in a massive resource consumption.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All mod_perl 1.x users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=www-apache/mod_perl-1.30"

All mod_perl 2.x users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=www-apache/mod_perl-2.0.3-r1"

References
=========
  [ 1 ] CVE-2007-1349
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1349 

Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200705-04.xml 

Concerns?
========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at 
http://bugs.gentoo.org. 

License
======
Copyright 2007 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5 

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