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                                   CERT-Renater

                        Note d'Information No. 2005/VULN538
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DATE                      : 08/09/2005

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Systems running Squid versions prior to 2.5.10-r2.

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Gentoo Linux Security Advisory                           GLSA 200509-06
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                                             http://security.gentoo.org/
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   Severity: Normal
      Title: Squid: Denial of Service vulnerabilities
       Date: September 07, 2005
       Bugs: #104603
         ID: 200509-06

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Synopsis
========

Squid contains several bugs when handling certain malformed requests
resulting in a Denial of Service.

Background
==========

Squid is a full-featured Web proxy cache designed to run on Unix-like
systems. It supports proxying and caching of HTTP, FTP, and other
protocols, as well as SSL support, cache hierarchies, transparent
caching, access control lists and many more features.

Affected packages
=================

     -------------------------------------------------------------------
      Package          /   Vulnerable   /                    Unaffected
     -------------------------------------------------------------------
   1  www-proxy/squid      < 2.5.10-r2                     >= 2.5.10-r2

Description
===========

Certain malformed requests result in a segmentation fault in the
sslConnectTimeout function, handling of other certain requests trigger
assertion failures.

Impact
======

By performing malformed requests an attacker could cause Squid to crash
by triggering an assertion failure or invalid memory reference.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Squid users should upgrade to the latest version:

     # emerge --sync
     # emerge --ask --oneshot --verbose ">=www-proxy/squid-2.5.10-r2"

References
==========

   [ 1 ] Squid Patches
         http://www.squid-cache.org/Versions/v2/2.5/bugs/

Availability
============

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

   http://security.gentoo.org/glsa/glsa-200509-06.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 at gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2005 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/2.0

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          Les serveurs de référence du CERT-Renater
          http://www.urec.fr/securite
          http://www.cru.fr/securite
          http://www.renater.fr
          =========================================================
          + CERT-RENATER          | tel : 01-53-94-20-44          +
          + 151 bd de l'Hopital   | fax : 01-53-94-20-41          +
          + 75013 Paris           | email: certsvp@renater.fr     +
          =========================================================