xorg security update

CentOS Errata and Security Advisory CESA-2008:0504

X.Org is an open source implementation of the X Window System. It provides
basic low-level functionality that full-fledged graphical user interfaces
are designed upon.

An input validation flaw was discovered in X.org’s Security and Record
extensions. 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-2008-1377)

Multiple integer overflow flaws were found in X.org’s Render extension. A
malicious authorized client could exploit these issues to cause a denial of
service (crash) or, potentially, execute arbitrary code with root
privileges on the X.Org server. (CVE-2008-2360, CVE-2008-2361,
CVE-2008-2362)

An input validation flaw was discovered in X.org’s MIT-SHM extension. A
client connected to the X.org server could read arbitrary server memory.
This could result in the sensitive data of other users of the X.org server
being disclosed. (CVE-2008-1379)

Users of xorg-x11-server should upgrade to these updated packages, which
contain backported patches to resolve these issues.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2008-June/077180.html
https://lists.centos.org/pipermail/centos-announce/2008-June/077181.html

Affected packages:
xorg-x11-server-Xdmx
xorg-x11-server-Xephyr
xorg-x11-server-Xnest
xorg-x11-server-Xorg
xorg-x11-server-Xvfb
xorg-x11-server-randr-source
xorg-x11-server-sdk

Upstream details at:
https://access.redhat.com/errata/RHSA-2008:0504