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[gentoo-announce] [ GLSA 201101-01 ] gif2png: User-assisted execution of arbitrary

Posted on 05 January 2011
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 201101-01
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http://security.gentoo.org/
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Severity: Normal
Title: gif2png: User-assisted execution of arbitrary code
Date: January 05, 2011
Bugs: #346501
ID: 201101-01

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Synopsis
========
gif2png contains a stack overflow vulnerability when parsing command
line arguments.

Background
==========
gif2png is a command line program that converts image files from the
Graphics Interchange Format (GIF) format to the Portable Network
Graphics (PNG) format.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-gfx/gif2png < 2.5.1-r1 >= 2.5.1-r1

Description
===========
gif2png contains a command line parsing vulnerability that may result
in a stack overflow due to an unexpectedly long input filename.

Impact
======
A remote attacker could entice a user to open a specially crafted
image, possibly resulting in the execution of arbitrary code with the
privileges of the user running the application, or a Denial of Service.
Note that applications relying on gif2png to process images can also
trigger the vulnerability.

Workaround
==========
There is no known workaround at this time.

Resolution
==========
All gif2png users should upgrade to the latest stable version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-gfx/gif2png-2.5.1-r1"

References
==========
[ 1 ] CVE-2009-5018
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-5018

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

http://security.gentoo.org/glsa/glsa-201101-01.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.

License
=======
Copyright 2011 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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