GLSA 201402-03: Pixman: User-assisted execution of arbitrary code

http://security.gentoo.org/

Severity:	normal
Title:	Pixman: User-assisted execution of arbitrary code
Date:	02/02/2014
Bugs:	#493292
ID:	201402-03

Synopsis

An integer underflow vulnerability in Pixman may allow a context-dependent attacker to cause Denial of Service.

Background

Pixman is a pixel manipulation library.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
x11-libs/pixman	< 0.32.4	>= 0.32.4	All supported architectures

Description

The trapezoid handling code in Pixman contains an integer underflow vulnerability.

Impact

A context-dependent attacker could entice a user to open a specially crafted file using an application linked against Pixman, possibly resulting in execution of arbitrary code with the privileges of the process, or a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All Pixman users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=x11-libs/pixman-0.32.4"

Packages which depend on this library may need to be recompiled. Tools such as revdep-rebuild may assist in identifying these packages.

References

CVE-2013-6425

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201402-03.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.