XFree86 security update

CentOS Errata and Security Advisory CESA-2007:0125-01

XFree86 is an implementation of the X Window System, which provides the
core functionality for the Linux graphical desktop.

iDefense reported an integer overflow flaw in the XFree86 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 XFree86 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.
(CVE-2007-1351, CVE-2007-1352)

An integer overflow flaw was found in the XFree86 XGetPixel() function.
Improper use of this function could cause an application calling it to
function improperly, possibly leading to a crash or arbitrary code
execution. (CVE-2007-1667)

Users of XFree86 should upgrade to these updated packages, which contain a
backported patch and is not vulnerable to this issue.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2007-April/075812.html

Affected packages:
XFree86
XFree86-100dpi-fonts
XFree86-75dpi-fonts
XFree86-ISO8859-15-100dpi-fonts
XFree86-ISO8859-15-75dpi-fonts
XFree86-ISO8859-2-100dpi-fonts
XFree86-ISO8859-2-75dpi-fonts
XFree86-ISO8859-9-100dpi-fonts
XFree86-ISO8859-9-75dpi-fonts
XFree86-Xnest
XFree86-Xvfb
XFree86-cyrillic-fonts
XFree86-devel
XFree86-doc
XFree86-libs
XFree86-tools
XFree86-twm
XFree86-xdm
XFree86-xf86cfg
XFree86-xfs