A Squid security update is available for Gentoo Linux

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Gentoo Linux Security Advisory GLSA 200502-04:02
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http://security.gentoo.org/
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Severity: Normal
Title: Squid: Multiple vulnerabilities
Date: February 02, 2005
Updated: February 02, 2005
Bugs: #79495, #78776, #80201, #80341
ID: 200502-04:02

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Synopsis
=======

Squid contains vulnerabilities in the code handling WCCP, HTTP and LDAP which could lead to Denial of Service, access control bypass, web cache and log poisoning.



Background
=========

Squid is a full-featured Web proxy cache designed to run on Unix systems. It supports proxying and caching of HTTP, FTP, and other protocols, as well as SSL support, cache hierarchies, transparent caching, access control lists and many other features.

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

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Package / Vulnerable / Unaffected
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1 www-proxy/squid < 2.5.7-r5 >= 2.5.7-r5

Description
==========

Squid contains several vulnerabilities:

* Buffer overflow when handling WCCP recvfrom() (CAN-2005-0211).

* Loose checking of HTTP headers (CAN-2005-0173 and CAN-2005-0174).

* Incorrect handling of LDAP login names with spaces (CAN-2005-0175).

Impact
=====

An attacker could exploit:

* the WCCP buffer overflow to cause Denial of Service.

* the HTTP header parsing vulnerabilities to inject arbitrary response data, potentially leading to content spoofing, web cache poisoning and other cross-site scripting or HTTP response splitting attacks.

* the LDAP issue to login with several variations of the same login name, leading to log poisoning.

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 ">=www-proxy/squid-2.5.7-r5"

References
=========

[ 1 ] CAN-2005-0173
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0173
[ 2 ] CAN-2005-0174
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0174
[ 3 ] CAN-2005-0175
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0175
[ 4 ] CAN-2005-0211
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0211

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

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

http://security.gentoo.org/glsa/glsa-200502-04.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 2005 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/2.0