A new security update has been released for Gentoo Linux - GTK+ 2, GdkPixbuf: Multiple XPM decoding vulnerabilities. Here the announcement:
Gentoo Linux Security Advisory GLSA 200511-14
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http://security.gentoo.org/
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Severity: Normal
Title: GTK+ 2, GdkPixbuf: Multiple XPM decoding vulnerabilities
Date: November 16, 2005
Bugs: #112608
ID: 200511-14
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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+ < 2.8.6-r1 >= 2.8.6-r1
*>= 2.6.10-r1
< 2.0
2 media-libs/gdk-pixbuf < 0.22.0-r5 >= 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 ">=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?id39&type=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
