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Gentoo Linux Security Advisory                           GLSA 200903-38
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  Severity: Normal
     Title: Squid: Multiple Denial of Service vulnerabilities
      Date: March 24, 2009
      Bugs: #216319, #257585
        ID: 200903-38

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Synopsis
========

Multiple vulnerabilities have been found in Squid which allow for
remote Denial of Service attacks.

Background
==========

Squid is a full-featured web proxy cache.

Affected packages
=================

    -------------------------------------------------------------------
     Package          /  Vulnerable  /                      Unaffected
    -------------------------------------------------------------------
  1  net-proxy/squid       < 2.7.6                            >= 2.7.6

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

* The arrayShrink function in lib/Array.c can cause an array to
  shrink to 0 entries, which triggers an assert error. NOTE: this issue
  is due to an incorrect fix for CVE-2007-6239 (CVE-2008-1612).

* An invalid version number in a HTTP request may trigger an
  assertion in HttpMsg.c and HttpStatusLine.c (CVE-2009-0478).

Impact
======

The issues allows for Denial of Service attacks against the service via
an HTTP request with an invalid version number and other specially
crafted requests.

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 ">=net-proxy/squid-2.7.6"

References
==========

  [ 1 ] CVE-2007-6239
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6239
  [ 2 ] CVE-2008-1612
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1612
  [ 3 ] CVE-2009-0478
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0478
  [ 4 ] GLSA-200801-05
        http://www.gentoo.org/security/en/glsa/glsa-200801-05.xml

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

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

  http://security.gentoo.org/glsa/glsa-200903-38.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 2009 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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