ImageMagick, imlib, imlib2: BMP decoding buffer overflows

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200409-12 / imagemagick imlib
Release Date	September 08, 2004
Latest Revision	September 08, 2004: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
media-gfx/imagemagick	< 6.0.7.1	>= 6.0.7.1	All supported architectures
media-libs/imlib	< 1.9.14-r2	>= 1.9.14-r2	All supported architectures
media-libs/imlib2	< 1.1.2	>= 1.1.2	All supported architectures

Related bugreports: #62309, #62487

Synopsis

ImageMagick, imlib and imlib2 contain exploitable buffer overflow vulnerabilities in the BMP image processing code.

2. Impact Information

Background

ImageMagick is a suite of image manipulation utilities and libraries used for a wide variety of image formats. imlib is a general image loading and rendering library.

Description

Due to improper bounds checking, ImageMagick and imlib are vulnerable to a buffer overflow when decoding runlength-encoded bitmaps. This bug can be exploited using a specially-crafted BMP image and could potentially allow remote code execution when this image is decoded by the user.

Impact

A specially-crafted runlength-encoded BMP could lead ImageMagick and imlib to crash or potentially execute arbitrary code.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All ImageMagick users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge sync
# emerge -pv ">=media-gfx/imagemagick-6.0.7.1"
# emerge ">=media-gfx/imagemagick-6.0.7.1"

All imlib users should upgrade to the latest version:

Code Listing 3.2: Resolution

# emerge sync
# emerge -pv ">=media-libs/imlib-1.9.14-r2"
# emerge ">=media-libs/imlib-1.9.14-r2"

All imlib2 users should upgrade to the latest version:

Code Listing 3.3: Resolution

# emerge sync
# emerge -pv ">=media-libs/imlib2-1.1.2"
# emerge ">=media-libs/imlib2-1.1.2"

4. References

Page updated September 08, 2004

Summary: This is a Gentoo Linux Security Advisory

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