ImageMagick: Multiple buffer overflows

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200705-13 / imagemagick
Release Date	May 10, 2007
Latest Revision	June 07, 2007: 02
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
media-gfx/imagemagick	< 6.3.3	>= 6.3.3	All supported architectures

Related bugreports: #152672, #159567, #173186

Synopsis

Multiple integer overflows have been discovered in ImageMagick allowing for the execution of arbitrary code.

2. Impact Information

Background

ImageMagick is a collection of tools allowing various manipulations on image files.

Description

iDefense Labs has discovered multiple integer overflows in ImageMagick in the functions ReadDCMImage() and ReadXWDImage(), that are used to process DCM and XWD files.

Impact

An attacker could entice a user to open specially crafted XWD or DCM file, resulting in heap-based buffer overflows and possibly the execution of arbitrary code with the privileges of the user running ImageMagick. Note that this user may be httpd or any other account used by applications relying on the ImageMagick tools to automatically process images.

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 --ask --oneshot --verbose ">=media-gfx/imagemagick-6.3.3"

4. References

CVE-2007-1797

Updated May 10, 2007

Summary: This is a Gentoo Linux Security Advisory

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