GLSA 200712-04 Cairo: User-assisted execution of arbitrary code
Posted on: 12/09/2007 09:35 PM

A new security update has been released for Gentoo Linux - Cairo: User-assisted execution of arbitrary code. Here the announcement:

Gentoo Linux Security Advisory GLSA 200712-04
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http://security.gentoo.org/
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Severity: Normal
Title: Cairo: User-assisted execution of arbitrary code
Date: December 09, 2007
Bugs: #200350
ID: 200712-04

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Synopsis
========

Multiple integer overflows were discovered in Cairo, possibly leading
to the execution of arbitrary code.

Background
==========

Cairo is a 2D vector graphics library with cross-device output support.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 x11-libs/cairo lt; 1.4.12 gt;= 1.4.12

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

Multiple integer overflows were reported, one of which Peter Valchev
(Google Security) found to be leading to a heap-based buffer overflow
in the cairo_image_surface_create_from_png() function that processes
PNG images.

Impact
======

A remote attacker could entice a user to view or process a specially
crafted PNG image file in an application linked against Cairo, possibly
leading to the execution of arbitrary code with the privileges of the
user running the application.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Cairo users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose "gt;=x11-libs/cairo-1.4.12"

References
==========

[ 1 ] CVE-2007-5503
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5503

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

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

http://security.gentoo.org/glsa/glsa-200712-04.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
http://bugs.gentoo.org.

License
=======

Copyright 2007 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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