7.5 - RHSA-2005:070

Problem Description:

Updated ImageMagick packages that fix a heap based buffer overflow are now available.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - i386, ia64 Red Hat Linux Advanced Workstation 2.1 - ia64 Red Hat Enterprise Linux ES version 2.1 - i386 Red Hat Enterprise Linux WS version 2.1 - i386 Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64 Red Hat Desktop version 3 - i386, x86_64 Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64 Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64

3. Problem description:

ImageMagick is an image display and manipulation tool for the X Window System.

Andrei Nigmatulin discovered a heap based buffer overflow flaw in the ImageMagick image handler. An attacker could create a carefully crafted Photoshop Document (PSD) image in such a way that it would cause ImageMagick to execute arbitrary code when processing the image. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-0005 to this issue.

A format string bug was found in the way ImageMagick handles filenames. An attacker could execute arbitrary code on a victim's machine if they were able to trick the victim into opening a file with a specially crafted name.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-0397 to this issue.

A bug was found in the way ImageMagick handles TIFF tags. It is possible that a TIFF image file with an invalid tag could cause ImageMagick to crash. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-0759 to this issue.

A bug was found in ImageMagick's TIFF decoder. It is possible that a specially crafted TIFF image file could cause ImageMagick to crash. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-0760 to this issue.

A bug was found in the way ImageMagick parses PSD files. It is possible that a specially crafted PSD file could cause ImageMagick to crash. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-0761 to this issue.

A heap overflow bug was found in ImageMagick's SGI parser. It is possible that an attacker could execute arbitrary code by tricking a user into opening a specially crafted SGI image file. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-0762 to this issue.

Users of ImageMagick should upgrade to these updated packages, which contain backported patches, and are not vulnerable to these issues.

4. Solution:

Before applying this update, make sure that all previously-released errata relevant to your system have been applied. Use Red Hat Network to download and update your packages. To launch the Red Hat Update Agent, use the following command:

up2date

For information on how to install packages manually, refer to the following Web page for the System Administration or Customization guide specific to your system:

http://www.redhat.com/docs/manuals/enterprise/

5. Bug IDs fixed (http://bugzilla.redhat.com/):

145111 - CAN-2005-0005 buffer overflow in ImageMagick 150185 - CAN-2005-0397 ImageMagick format string flaw 150312 - CAN-2005-0759 Denial of Service in .tiff images with invalid TAG 150315 - CAN-2005-0760 Accessing memory outside of image during decoding of TIFF 150323 - CAN-2005-0761 Bug in parsing PSD files 150327 - CAN-2005-0762 Buffer overflow in SGI parser