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[gentoo-announce] [ GLSA 201402-03 ] Pixman: User-assisted execution of arbitrary code

Posted on 02 February 2014
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 201402-03
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http://security.gentoo.org/
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Severity: Normal
Title: Pixman: User-assisted execution of arbitrary code
Date: February 02, 2014
Bugs: #493292
ID: 201402-03

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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
-------------------------------------------------------------------
1 x11-libs/pixman < 0.32.4 >= 0.32.4

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
==========
[ 1 ] CVE-2013-6425
http://nvd.nist.gov/nvd.cfm?cvename=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.

License
=======
Copyright 2014 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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