AOH :: HP Unsorted S :: C07-2113.HTM

Squid: Multiple Denial of Service vulnerabilities



Squid: Multiple Denial of Service vulnerabilities
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@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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