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

http://security.gentoo.org/

Severity:	normal
Title:	ImageMagick, imlib, imlib2: BMP decoding buffer overflows
Date:	09/08/2004
Bugs:	#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	Vulnerable	Unaffected	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

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:

    # 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:


    # 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:


    # emerge sync

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

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200409-12.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.