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                                    CERT-Renater

                         Note d'Information No. 2006/VULN348
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DATE                      : 16/06/2006

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Systemsq running PAM-MySQL versions prior
                                                            to 0.7_rc1.

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Gentoo Linux Security Advisory                           GLSA 200606-18
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                                             http://security.gentoo.org/
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   Severity: Normal
      Title: PAM-MySQL: Multiple vulnerabilities
       Date: June 15, 2006
       Bugs: #120842
         ID: 200606-18

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Synopsis
========

Vulnerabilities in PAM-MySQL can lead to a Denial of Service, making it
impossible to log into a machine.

Background
==========

PAM-MySQL is a PAM module used to authenticate users against a MySQL
backend.

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

     -------------------------------------------------------------------
      Package             /  Vulnerable  /                   Unaffected
     -------------------------------------------------------------------
   1  sys-auth/pam_mysql      < 0.7_rc1                      >= 0.7_rc1

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

A flaw in handling the result of pam_get_item() as well as further
unspecified flaws were discovered in PAM-MySQL.

Impact
======

By exploiting the mentioned flaws an attacker can cause a Denial of
Service and thus prevent users that authenticate against PAM-MySQL from
logging into a machine. There is also a possible additional attack
vector with more malicious impact that has not been confirmed yet.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All PAM-MySQL users should upgrade to the latest version:

     # emerge --sync
     # emerge --ask --oneshot --verbose ">=sys-auth/pam_mysql-0.7_rc1"

References
==========

   [ 1 ] Official release information
         http://pam-mysql.sourceforge.net/News/

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

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

   http://security.gentoo.org/glsa/glsa-200606-18.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 at 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/2.5
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