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

http://security.gentoo.org/

Severity:	normal
Title:	GTK+ 2, GdkPixbuf: Multiple XPM decoding vulnerabilities
Date:	11/16/2005
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	Architecture(s)
x11-libs/gtk+	< 2.8.6-r1	>= 2.8.6-r1	All supported architectures
media-libs/gdk-pixbuf	< 0.22.0-r5	>= 0.22.0-r5	All 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

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 https://bugs.gentoo.org.