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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
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
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@xxxxxxxxxx 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
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