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Gentoo Linux Security Advisory                           GLSA 200502-25
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  Severity: Normal
     Title: Squid: Denial of Service through DNS responses
      Date: February 18, 2005
      Bugs: #81997
        ID: 200502-25

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Synopsis
========

Squid contains a bug in the handling of certain DNS responses 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 other features.

Affected packages
=================

    -------------------------------------------------------------------
     Package          /  Vulnerable  /                      Unaffected
    -------------------------------------------------------------------
  1  www-proxy/squid       < 2.5.8                            >= 2.5.8

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

Handling of certain DNS responses trigger assertion failures.

Impact
======

By returning a specially crafted DNS response an attacker could cause
Squid to crash by triggering an assertion failure.

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-2.5.8"

References
==========

  [ 1 ] CAN-2005-0446
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0446

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

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

  http://security.gentoo.org/glsa/glsa-200502-25.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 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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