Imlib 2: User-assisted execution of arbitrary code

Security Team Contact Address

Updated June 08, 2008

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200806-03 / imlib2
Release Date	June 08, 2008
Latest Revision	June 08, 2008: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
media-libs/imlib2	< 1.4.0-r1	>= 1.4.0-r1	All supported architectures

Related bugreports: #223965

Synopsis

Two vulnerabilities in Imlib 2 may allow for the execution of arbitrary code.

2. Impact Information

Background

Imlib 2 is an advanced replacement library for libraries like libXpm.

Description

Stefan Cornelius (Secunia Research) reported two boundary errors in Imlib2:

One of them within the load() function in the file src/modules/loaders/loader_pnm.c when processing the header of a PNM image file, possibly leading to a stack-based buffer overflow.
The second one within the load() function in the file src/modules/loader_xpm.c when processing an XPM image file, possibly leading to a stack-based buffer overflow.

Impact

A remote attacker could entice a user to open a specially crafted PNM or XPM image, possibly resulting in the execution of arbitrary code with the rights of the user running the application using Imlib 2.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All Imlib 2 users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/imlib2-1.4.0-r1"

4. References

CVE-2008-2426