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Red Hat: 2013:1426-01 Important: xorg-x11-server Use-After-Free

red hat
Calendar Grey October 15, 2013
Dist Redhat Esm H88
Important xorg-x11-server patch for Red Hat fixes use-after-free vulnerability affecting system integrity.
Updated xorg-x11-server packages that fix one security issue are now available for Red Hat Enterprise Linux 5 and 6

Solution

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/site/articles/11258

Summary

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.
A use-after-free flaw was found in the way the X.Org server handled ImageText requests. A malicious, authorized client could use this flaw to crash the X.Org server or, potentially, execute arbitrary code with root privileges. (CVE-2013-4396)
Red Hat would like to thank the X.Org security team for reporting this issue. Upstream acknowledges Pedro Ribeiro as the original reporter.
All xorg-x11-server users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue.

Topics%20covered

Topics Covered

security advisory Red Hat software update important system security xorg-x11-server use-after-free

References

https://access.redhat.com/security/cve/CVE-2013-4396 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386: xorg-x11-server-Xdmx-1.1.1-48.101.el5_10.1.i386.rpm xorg-x11-server-Xephyr-1.1.1-48.101.el5_10.1.i386.rpm xorg-x11-server-Xnest-1.1.1-48.101.el5_10.1.i386.rpm xorg-x11-server-Xorg-1.1.1-48.101.el5_10.1.i386.rpm xorg-x11-server-Xvfb-1.1.1-48.101.el5_10.1.i386.rpm xorg-x11-server-Xvnc-source-1.1.1-48.101.el5_10.1.i386.rpm xorg-x11-server-debuginfo-1.1.1-48.101.el5_10.1.i386.rpm
x86_64: xorg-x11-server-Xdmx-1.1.1-48.101.el5_10.1.x86_64.rpm xorg-x11-server-Xephyr-1.1.1-48.101.el5_10.1.x86_64.rpm xorg-x11-server-Xnest-1.1.1-48.101.el5_10.1.x86_64.rpm xorg-x11-server-Xorg-1.1.1-48.101.el5_10.1.x86_64.rpm xorg-x11-server-Xvfb-1.1.1-48.101.el5_10.1.x86_64.rpm xorg-x11-server-Xvnc-source-1.1.1-48.101.el5_10.1.x86_64.rpm xorg-x11-server-debuginfo-1.1.1-48.101.el5_10.1.x86_64.rpm
RHEL Desktop Workstation (v. 5 client):
Source:
i386: xorg-x11-server-debuginfo-1.1.1-48.101.el5_10.1.i386.rpm xorg-x11-server-sdk-1.1.1-48.101.el5_10.1.i386.rpm
x86_64: xorg-x11-server-debuginfo-1.1.1-48.101.el5_10.1.x86_64.rpm xorg-x11-server-sdk-1.1.1-48.101.el5_10.1.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386: xorg-x11-server-Xdmx-1.1.1-48.101.el5_10.1.i386.rpm xorg-x11-server-Xephyr-1.1.1-48.101.el5_10.1.i386.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2013:1426-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2013:1426.html
Issue date: 2013-10-15

Topic

Updated xorg-x11-server packages that fix one security issue are nowavailable for Red Hat Enterprise Linux 5 and 6.The Red Hat Security Response Team has rated this update as havingimportant security impact. A Common Vulnerability Scoring System (CVSS)base score, which gives a detailed severity rating, is available from theCVE link in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat software update important system security xorg-x11-server use-after-free

Relevant Releases Architectures

RHEL Desktop Workstation (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, noarch, x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - noarch, x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, noarch, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, noarch, x86_64

Bugs Fixed

1014561 - CVE-2013-4396 xorg-x11-server: use-after-free flaw when handling ImageText requests

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