[Full-disclosure] [ 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@xxxxxxxxxx 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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Relevant Pages

  • Squid Security Update Advisory 2002:3 (fwd)
    ... Subject: Squid Security Update Advisory 2002:3 ... Squid HTTP Proxy are strongly encouraged to upgrade. ... - Security fixes in how Squid parses FTP directory listings into ...
    (FreeBSD-Security)
  • Squid Security Update Advisory 2002:3
    ... Squid HTTP Proxy are strongly encouraged to upgrade. ... Security related changes in the 2.4.STABLE7 release: ... - Security fixes in how Squid parses FTP directory listings into ...
    (Bugtraq)
  • [Full-disclosure] [ GLSA 200801-05 ] Squid: Denial of Service
    ... Bugs: #201209 ... A Denial of Service vulnerability has been reported in Squid. ... Security is a primary focus of Gentoo Linux and ensuring the ...
    (Full-Disclosure)
  • [UNIX] Squid Buffer Overflow (FTP)
    ... The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com ... Squid, http://www.squid-cache.org/, is a commonly used web proxy/cache ... A remote attacker might gain root access on the server this way. ... rfc1738_escape_partwhich returns the parameter string URL-escaped ...
    (Securiteam)
  • [ GLSA 200801-05 ] Squid: Denial of Service
    ... Bugs: #201209 ... A Denial of Service vulnerability has been reported in Squid. ... Security is a primary focus of Gentoo Linux and ensuring the ...
    (Bugtraq)