Updated X.org packages that fix several security issues are now available
for CentOS Linux 4.
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 XC-MISC
extension. A malicious authorized client could exploit this issue to cause
a denial of service (crash) or potentially execute arbitrary code with the
privileges of the X.org server. (CVE-2007-1003)
iDefense reported two integer overflows in the way X.org handled various
font files. A malicious local user could exploit these issues to
potentially execute arbitrary code with the privileges of the X.org server.
An integer overflow flaw was found in the X.org XGetPixel() function.
Improper use of this function could cause an application calling it to
function improperly, possibly leading to a crash or arbitrary code
Users of X.org should upgrade to these updated packages, which contain a
backported patch and are not vulnerable to these issues.