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[gentoo-announce] [ GLSA 201301-02 ] HAProxy: Arbitrary code execution

Posted on 09 January 2013
Gentoo-announce

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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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