[ GLSA 200409-12 ] ImageMagick, imlib, imlib2: BMP decoding buffer overflows

[GLSA]

Gentoo Linux Security Advisory

Title: ImageMagick, imlib, imlib2: BMP decoding buffer overflows (GLSA 200409-12)
Severity: normal
Exploitable: remote
Date: September 08, 2004
Bug(s): #62309, #62487
ID: 200409-12

Synopsis

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

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.

Affected Packages

Package: media-gfx/imagemagick
Vulnerable: < 6.0.7.1
Unaffected: >= 6.0.7.1
Architectures: All supported architectures

Package: media-libs/imlib
Vulnerable: < 1.9.14-r2
Unaffected: >= 1.9.14-r2
Architectures: All supported architectures

Package: media-libs/imlib2
Vulnerable: < 1.1.2
Unaffected: >= 1.1.2
Architectures: All supported architectures


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.

Workaround

There is no known workaround at this time.

Resolution

All ImageMagick users should upgrade to the latest version: