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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@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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