Updated ImageMagick packages that fix a format string bug are now available for CentOS Linux 4. This update has been rated as having moderate security impact by the Red Hat Security Response Team.
ImageMagick(TM) is an image display and manipulation tool for the X Window System which can read and write multiple image formats. 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. Additionally, a bug was fixed which caused ImageMagick(TM) to occasionally segfault when writing TIFF images to standard output. Users of ImageMagick should upgrade to these updated packages, which contain a backported patch, and are not vulnerable to these issues.