GLSA 200511-14 GTK+ 2, GdkPixbuf: Multiple XPM decoding vulnerabilities

Gentoo Linux Security Advisory GLSA 200511-14
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Severity: Normal
Title: GTK+ 2, GdkPixbuf: Multiple XPM decoding vulnerabilities
Date: November 16, 2005
Bugs: #112608
ID: 200511-14

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
========

The GdkPixbuf library, that is also included in GTK+ 2, contains
vulnerabilities that could lead to a Denial of Service or the
execution of arbitrary code.

Background
==========

GTK+ (the GIMP Toolkit) is a toolkit for creating graphical user
interfaces. The GdkPixbuf library provides facilities for image
handling. It is available as a standalone library and also packaged
with GTK+ 2.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 x11-libs/gtk+ lt; 2.8.6-r1 gt;= 2.8.6-r1
*gt;= 2.6.10-r1
lt; 2.0
2 media-libs/gdk-pixbuf lt; 0.22.0-r5 gt;= 0.22.0-r5
-------------------------------------------------------------------
2 affected packages on all of their supported architectures.
-------------------------------------------------------------------

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

iDEFENSE reported a possible heap overflow in the XPM loader
(CVE-2005-3186). Upon further inspection, Ludwig Nussel discovered two
additional issues in the XPM processing functions : an integer overflow
(CVE-2005-2976) that affects only gdk-pixbuf, and an infinite loop
(CVE-2005-2975).

Impact
======

Using a specially crafted XPM image an attacker could cause an affected
application to enter an infinite loop or trigger the overflows,
potentially allowing the execution of arbitrary code.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All GTK+ 2 users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose x11-libs/gtk+

All GdkPixbuf users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose "gt;=media-libs/gdk-pixbuf-0.22.0-r5"

References
==========

[ 1 ] CVE-2005-2975
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-2975
[ 2 ] CVE-2005-2976
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-2976
[ 3 ] CVE-2005-3186
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3186
[ 4 ] iDefense Security Advisory 11.15.05

http://www.idefense.com/application/poi/display?id39type=vulnerabilities

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

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

http://security.gentoo.org/glsa/glsa-200511-14.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 2005 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/2.0