[ GLSA 200604-09 ] Cyrus-SASL: DIGEST-MD5 Pre-Authentication Denial of Service

[Sune Kloppenborg Jeppesen <jaervosz () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200604-09
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Cyrus-SASL: DIGEST-MD5 Pre-Authentication Denial of Service
      Date: April 21, 2006
      Bugs: #129523
        ID: 200604-09

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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      < 2.1.21-r2                 >= 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 ">=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

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