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Gentoo Linux Security Advisory                           GLSA 201301-02
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                                            http://security.gentoo.org/
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 Severity: High
    Title: HAProxy: Arbitrary code execution
     Date: January 08, 2013
     Bugs: #417079
       ID: 201301-02

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Synopsis
========

A buffer overflow in HAProxy may allow execution of arbitrary code.

Background
==========

HAProxy is a TCP/HTTP reverse proxy for high availability environments.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  net-proxy/haproxy            < 1.4.21                  >= 1.4.21

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

A boundary error in HAProxy could cause a buffer overflow when header
rewriting is enabled and the configuration sets global.tune.bufsize to
a value greater than the default (16384 bytes).

Impact
======

A remote attacker could possibly execute arbitrary code with the
privileges of the process or cause a Denial of Service condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All HAProxy users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-proxy/haproxy-1.4.21"

References
==========

[ 1 ] CVE-2012-2942
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-2942

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

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

 http://security.gentoo.org/glsa/glsa-201301-02.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 2013 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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