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

[Matthias Geerdsen <vorlon () gentoo org>]

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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 () gentoo 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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