GLSA 200903-38 Squid: Multiple Denial of Service vulnerabilities
Posted on: 03/24/2009 11:50 PM

A new security update has been released for Gentoo Linux - Squid: Multiple Denial of Service vulnerabilities. Here the announcement:

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 lt; 2.7.6 gt;= 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 "gt;=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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