gif2png: User-assisted execution of arbitrary code

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 201101-01 / gif2png
Release Date	January 05, 2011
Latest Revision	January 05, 2011: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
media-gfx/gif2png	< 2.5.1-r1	>= 2.5.1-r1	All supported architectures

Related bugreports: #346501

Synopsis

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

2. Impact Information

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.

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.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All gif2png users should upgrade to the latest stable version:

Code Listing 3.1: Resolution

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

4. References

CVE-2009-5018

Page updated January 05, 2011

Summary: This is a Gentoo Linux Security Advisory

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