bugtraq - [ GLSA 200701-22 ] Squid: Multiple Denial of Service vulnerabilities

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Date: Thu, 25 Jan 2007 21:24:23 +0100
From: Matthias Geerdsen <vorlon@...too.org>
To: gentoo-announce@...too.org
Cc: bugtraq@...urityfocus.com, full-disclosure@...ts.grok.org.uk,
	security-alerts@...uxsecurity.com
Subject: [ GLSA 200701-22 ] Squid: Multiple Denial of Service vulnerabilities

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Gentoo Linux Security Advisory                           GLSA 200701-22
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Squid: Multiple Denial of Service vulnerabilities
      Date: January 25, 2007
      Bugs: #162364
        ID: 200701-22

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Synopsis
========

Two vulnerabilities have been found in Squid which make it susceptible
to Denial of Service attacks.

Background
==========

Squid is a multi-protocol proxy server.

Affected packages
=================

    -------------------------------------------------------------------
     Package          /  Vulnerable  /                      Unaffected
    -------------------------------------------------------------------
  1  net-proxy/squid       < 2.6.7                            >= 2.6.7

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

Squid fails to correctly handle ftp:// URI's. There is also an error in
the external_acl queue which can cause an infinite looping condition.

Impact
======

An attacker could attempt to retrieve a specially crafted URI via a
Squid server causing the service to crash. If an attacker could
generate a sufficiently high load on the Squid services, they could
cause a Denial of Service by forcing Squid into an infinite loop.

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-2.6.7"

References
==========

  [ 1 ] CVE-2007-0247
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0247
  [ 2 ] CVE-2007-0248
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0248

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

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

  http://security.gentoo.org/glsa/glsa-200701-22.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@...too.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2007 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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