Gentoo Linux Security Advisory GLSA 200511-03

                                        http://security.gentoo.org/

Severity: Normal
Title: giflib: Multiple vulnerabilities
Date: November 04, 2005
Bugs: #109997
ID: 200511-03

Synopsis

giflib may dereference NULL or write out of bounds when processing
malformed images, potentially resulting in Denial of Service or
arbitrary code execution.

Background

giflib is a library for reading and writing GIF images.

Affected packages

-------------------------------------------------------------------
 Package            /  Vulnerable  /                    Unaffected
-------------------------------------------------------------------

1 media-libs/giflib < 4.1.4 >= 4.1.4

Description

Chris Evans and Daniel Eisenbud independently discovered two
out-of-bounds memory write operations and a NULL pointer dereference in
giflib.

Impact

An attacker could craft a malicious GIF image and entice users to load
it using an application making use of the giflib library, resulting in
an application crash or potentially the execution of arbitrary code.

Workaround

There is no known workaround at this time.

Resolution

All giflib users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/giflib-4.1.4"

References

[ 1 ] CVE-2005-2974
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-2974
[ 2 ] CVE-2005-3350
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3350

Availability

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

http://security.gentoo.org/glsa/glsa-200511-03.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
[email protected] 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