Gentoo Linux Security Advisory GLSA 200406-13
Severity: High
Title: Squid: NTLM authentication helper buffer overflow
Date: June 17, 2004
Bugs: #53367
ID: 200406-13
Synopsis
Squid contains a bug where it fails to properly check bounds of
the ‘pass’ variable.
Background
Squid contains a bug in the function ntlm_check_auth(). It fails
to do proper bounds checking on the values copyied to the ‘pass’
variable.
Affected packages
| Package | Vulnerable | Unaffected |
| 1 net-www/squid | <= 2.5.5-r1 | >= 2.5.5-r2 |
Description
Squid is a full-featured Web Proxy Cache designed to run on Unix
systems. It supports proxying and caching of HTTP, FTP, and other
URLs, as well as SSL support, cache hierarchies, transparent
caching, access control lists and many other features.
Impact
If Squid is configured to use NTLM authentication, an attacker
could exploit this vulnerability by sending a very long password.
This could lead to arbitrary code execution with the permissions of
the user running Squid.
Workaround
There is no known workaround at this time. All users are
encouraged to upgrade to the latest available version.
Resolution
All Squid users should upgrade to the latest stable version:
# emerge sync
# emerge -pv ">=net-www/squid-2.5.5-r2"
# emerge ">=net-www/squid-2.5.5-r2"
References
[ 1 ] CAN-2004-0541
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0541
Availability
This GLSA and any updates to it are available for viewing at the
Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200406-13.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 2004 Gentoo Technologies, Inc; referenced text belongs
to its owner(s).
The contents of this document are licensed under the Creative
Commons – Attribution / Share Alike license.