imlib2: Multiple vulnerabilities

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200612-20 / imlib2
Release Date	December 20, 2006
Latest Revision	December 20, 2006: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
media-libs/imlib2	< 1.3.0	>= 1.3.0	All supported architectures

Related bugreports: #154216

Synopsis

imlib2 contains several vulnerabilities that could lead to the remote execution of arbitrary code or a Denial of Service.

2. Impact Information

Background

imlib2 is an advanced replacement for image manipulation libraries such as libXpm. It is utilized by numerous programs, including gkrellm and several window managers, to display images.

Description

M. Joonas Pihlaja discovered several buffer overflows in loader_argb.c, loader_png.c, loader_lbm.c, loader_jpeg.c, loader_tiff.c, loader_tga.c, loader_pnm.c and an out-of-bounds memory read access in loader_tga.c.

Impact

An attacker can entice a user to process a specially crafted JPG, ARGB, PNG, LBM, PNM, TIFF, or TGA image with an "imlib2*" binary or another application using the imlib2 libraries. Successful exploitation of the buffer overflows causes the execution of arbitrary code with the permissions of the user running the application.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All imlib2 users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/imlib2-1.3.0"

4. References

Updated December 20, 2006

Summary: This is a Gentoo Linux Security Advisory

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