GLSA 200604-09 Cyrus-SASL: DIGEST-MD5 Pre-Authentication Denial of Service
Posted on: 04/21/2006 08:12 AM

A new security update has been released for Gentoo Linux - Cyrus-SASL: DIGEST-MD5 Pre-Authentication Denial of Service. Here the announcement:

Gentoo Linux Security Advisory GLSA 200604-09
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Severity: Normal
Title: Cyrus-SASL: DIGEST-MD5 Pre-Authentication Denial of Service
Date: April 21, 2006
Bugs: #129523
ID: 200604-09

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
========

Cyrus-SASL contains a vulnerability in the DIGEST-MD5 process that
could lead to a Denial of Service.

Background
==========

Cyrus-SASL is an implementation of the Simple Authentication and
Security Layer.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-libs/cyrus-sasl lt; 2.1.21-r2 gt;= 2.1.21-r2

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

Cyrus-SASL contains an unspecified vulnerability in the DIGEST-MD5
process that could lead to a Denial of Service.

Impact
======

An attacker could possibly exploit this vulnerability by sending
specially crafted data stream to the Cyrus-SASL server, resulting in a
Denial of Service even if the attacker is not able to authenticate.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Cyrus-SASL users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose "gt;=dev-libs/cyrus-sasl-2.1.21-r2"

References
==========

[ 1 ] CVE-2006-1721
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1721

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

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

http://security.gentoo.org/glsa/glsa-200604-09.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/2.0



Printed from Linux Compatible (http://www.linuxcompatible.org/news/story/glsa_200604_09_cyrus_sasl_digest_md5_pre_authentication_denial_of_service.html)