GLSA 200606-05 Pound: HTTP request smuggling

Posted by Bob on: 06/07/2006 08:12 PM [ Print | 0 comment(s) ]

A new security update has been released for Gentoo Linux - Pound: HTTP request smuggling. Here the announcement:

Gentoo Linux Security Advisory GLSA 200606-05
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http://security.gentoo.org/
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Severity: Low
Title: Pound: HTTP request smuggling
Date: June 07, 2006
Bugs: #118541
ID: 200606-05

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Synopsis
========

Pound is vulnerable to HTTP request smuggling, which could be exploited
to bypass security restrictions or poison web caches.

Background
==========

Pound is a reverse proxy, load balancer and HTTPS front-end. It allows
to distribute the load on several web servers and offers a SSL wrapper
for web servers that do not support SSL directly.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 www-servers/pound lt; 2.0.5 gt;= 2.0.5

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

Pound fails to handle HTTP requests with conflicting "Content-Length"
and "Transfer-Encoding" headers correctly.

Impact
======

An attacker could exploit this vulnerability by sending HTTP requests
with specially crafted "Content-Length" and "Transfer-Encoding" headers
to bypass certain security restrictions or to poison the web proxy
cache.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Pound users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose "gt;=www-servers/pound-2.0.5"

References
==========

[ 1 ] CVE-2005-3751
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3751

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

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

http://security.gentoo.org/glsa/glsa-200606-05.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 2006 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