[ GLSA 201110-23 ] Apache mod_authnz_external: SQL injection

[Alex Legler <a3li () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 201110-23
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                                            http://security.gentoo.org/
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 Severity: Low
    Title: Apache mod_authnz_external: SQL injection
     Date: October 25, 2011
     Bugs: #386165
       ID: 201110-23

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Synopsis
========

An input sanitation flaw in mod_authnz_external allows remote attacker
to conduct SQL injection.

Background
==========

mod_authnz_external is a tool for creating custom authentication
backends for HTTP basic authentication.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  www-apache/mod_authnz_external
                                  < 3.2.6                    >= 3.2.6 

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

mysql/mysql-auth.pl in mod_authnz_external does not properly sanitize
input before using it in an SQL query.

Impact
======

A remote attacker could exploit this vulnerability to inject arbitrary
SQL statements by using a specially crafted username for HTTP
authentication on a site using mod_authnz_external.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Apache mod_authnz_external users should upgrade to the latest
version:

  # emerge --sync
  # emerge --ask --oneshot -v ">=www-apache/mod_authnz_external-3.2.6"

References
==========

[ 1 ] CVE-2011-2688
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2688

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

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

 http://security.gentoo.org/glsa/glsa-201110-23.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
https://bugs.gentoo.org.

License
=======

Copyright 2011 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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