[Full-disclosure] [ GLSA 200601-05 ] mod_auth_pgsql: Multiple format string vulnerabilities

[Stefan Cornelius]

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Gentoo Linux Security Advisory                           GLSA 200601-05
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                                            http://security.gentoo.org/
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  Severity: High
     Title: mod_auth_pgsql: Multiple format string vulnerabilities
      Date: January 10, 2006
      Bugs: #118096
        ID: 200601-05

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Synopsis
========

Format string vulnerabilities in mod_auth_pgsql may lead to the
execution of arbitrary code.

Background
==========

mod_auth_pgsql is an Apache2 module that allows user authentication
against a PostgreSQL database.

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

    -------------------------------------------------------------------
     Package                 /  Vulnerable  /               Unaffected
    -------------------------------------------------------------------
  1  net-www/mod_auth_pgsql       < 2.0.3                     >= 2.0.3

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

The error logging functions of mod_auth_pgsql fail to validate certain
strings before passing them to syslog, resulting in format string
vulnerabilities.

Impact
======

An unauthenticated remote attacker could exploit these vulnerabilities
to execute arbitrary code with the rights of the user running the
Apache2 server by sending specially crafted login names.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All mod_auth_pgsql users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-www/mod_auth_pgsql-2.0.3"

References
==========

  [ 1 ] CVE-2005-3656
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3656
  [ 2 ] FrSIRT ADV-2006-0070
        http://www.frsirt.com/english/advisories/2006/0070

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

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

  http://security.gentoo.org/glsa/glsa-200601-05.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/2.0
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