Updated X.org X11 server packages that fix a security issue are now
available for CentOS Linux 5.
This update has been rated as having important security impact by the Red
Hat Security Response Team.
X.org is an open source implementation of the X Window System. It provides
the basic low-level functionality that full-fledged graphical user
interfaces are designed upon.
iDefense reported an integer overflow flaw in the X.org X11 server XC-MISC
extension. A malicious authorized client could exploit this issue to cause
a denial of service (crash) or potentially execute arbitrary code with root
privileges on the X.org server. (CVE-2007-1003)
Users of the X.org X11 server should upgrade to these updated packages,
which contain a backported patch and is not vulnerable to this issue.