[Full-disclosure] [ GLSA 200903-38 ] Squid: Multiple Denial of Service vulnerabilities

[Pierre-Yves Rofes]

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Gentoo Linux Security Advisory                           GLSA 200903-38
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                                            http://security.gentoo.org/
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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 at 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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