GLSA 201301-02: HAProxy: Arbitrary code execution

http://security.gentoo.org/

Severity:	high
Title:	HAProxy: Arbitrary code execution
Date:	01/08/2013
Bugs:	#417079
ID:	201301-02

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	Architecture(s)
net-proxy/haproxy	< 1.4.21	>= 1.4.21	All supported architectures

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

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.