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Category:   Application (Generic)  >   X Vendors:   X.org
(Red Hat Issues Fix) X Trapezoid Rendering Flaw Lets Local Users Deny Service
SecurityTracker Alert ID:  1029526
SecurityTracker URL:  http://securitytracker.com/id/1029526
CVE Reference:   CVE-2013-6424   (Links to External Site)
Date:  Dec 20 2013
Impact:   Denial of service via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in X. A local user can cause denial of service conditions.

A local user can cause the target X server to crash.

Bjorn Michaelsen reported this vulnerability.

Impact:   A local user can cause denial of service conditions on the target system.
Solution:   Red Hat has issued a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2013-1868.html

Vendor URL:  x.org/ (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  5, 6

Message History:   This archive entry is a follow-up to the message listed below.
Dec 11 2013 X Trapezoid Rendering Flaw Lets Local Users Deny Service



 Source Message Contents

Subject:  [RHSA-2013:1868-01] Important: xorg-x11-server security update

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: xorg-x11-server security update
Advisory ID:       RHSA-2013:1868-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2013-1868.html
Issue date:        2013-12-20
CVE Names:         CVE-2013-6424 
=====================================================================

1. Summary:

Updated xorg-x11-server packages that fix one security issue are now
available for Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having
important security impact. A Common Vulnerability Scoring System (CVSS)
base score, which gives a detailed severity rating, is available from the
CVE link in the References section.

2. 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

3. Description:

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.

An integer overflow, which led to a heap-based buffer overflow, was found
in the way X.Org server handled trapezoids. A malicious, authorized client
could use this flaw to crash the X.Org server or, potentially, execute
arbitrary code with root privileges. (CVE-2013-6424)

All xorg-x11-server users are advised to upgrade to these updated 
packages, which contain a backported patch to correct this issue.

4. 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

5. Bugs fixed (https://bugzilla.redhat.com/):

1037984 - CVE-2013-6424 xorg-x11-server: integer underflow when handling trapezoids

6. Package List:

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/xorg-x11-server-1.1.1-48.101.el5_10.2.src.rpm

i386:
xorg-x11-server-Xdmx-1.1.1-48.101.el5_10.2.i386.rpm
xorg-x11-server-Xephyr-1.1.1-48.101.el5_10.2.i386.rpm
xorg-x11-server-Xnest-1.1.1-48.101.el5_10.2.i386.rpm
xorg-x11-server-Xorg-1.1.1-48.101.el5_10.2.i386.rpm
xorg-x11-server-Xvfb-1.1.1-48.101.el5_10.2.i386.rpm
xorg-x11-server-Xvnc-source-1.1.1-48.101.el5_10.2.i386.rpm
xorg-x11-server-debuginfo-1.1.1-48.101.el5_10.2.i386.rpm

x86_64:
xorg-x11-server-Xdmx-1.1.1-48.101.el5_10.2.x86_64.rpm
xorg-x11-server-Xephyr-1.1.1-48.101.el5_10.2.x86_64.rpm
xorg-x11-server-Xnest-1.1.1-48.101.el5_10.2.x86_64.rpm
xorg-x11-server-Xorg-1.1.1-48.101.el5_10.2.x86_64.rpm
xorg-x11-server-Xvfb-1.1.1-48.101.el5_10.2.x86_64.rpm
xorg-x11-server-Xvnc-source-1.1.1-48.101.el5_10.2.x86_64.rpm
xorg-x11-server-debuginfo-1.1.1-48.101.el5_10.2.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/xorg-x11-server-1.1.1-48.101.el5_10.2.src.rpm

i386:
xorg-x11-server-debuginfo-1.1.1-48.101.el5_10.2.i386.rpm
xorg-x11-server-sdk-1.1.1-48.101.el5_10.2.i386.rpm

x86_64:
xorg-x11-server-debuginfo-1.1.1-48.101.el5_10.2.x86_64.rpm
xorg-x11-server-sdk-1.1.1-48.101.el5_10.2.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/xorg-x11-server-1.1.1-48.101.el5_10.2.src.rpm

i386:
xorg-x11-server-Xdmx-1.1.1-48.101.el5_10.2.i386.rpm
xorg-x11-server-Xephyr-1.1.1-48.101.el5_10.2.i386.rpm
xorg-x11-server-Xnest-1.1.1-48.101.el5_10.2.i386.rpm
xorg-x11-server-Xorg-1.1.1-48.101.el5_10.2.i386.rpm
xorg-x11-server-Xvfb-1.1.1-48.101.el5_10.2.i386.rpm
xorg-x11-server-Xvnc-source-1.1.1-48.101.el5_10.2.i386.rpm
xorg-x11-server-debuginfo-1.1.1-48.101.el5_10.2.i386.rpm
xorg-x11-server-sdk-1.1.1-48.101.el5_10.2.i386.rpm

ia64:
xorg-x11-server-Xdmx-1.1.1-48.101.el5_10.2.ia64.rpm
xorg-x11-server-Xephyr-1.1.1-48.101.el5_10.2.ia64.rpm
xorg-x11-server-Xnest-1.1.1-48.101.el5_10.2.ia64.rpm
xorg-x11-server-Xorg-1.1.1-48.101.el5_10.2.ia64.rpm
xorg-x11-server-Xvfb-1.1.1-48.101.el5_10.2.ia64.rpm
xorg-x11-server-Xvnc-source-1.1.1-48.101.el5_10.2.ia64.rpm
xorg-x11-server-debuginfo-1.1.1-48.101.el5_10.2.ia64.rpm
xorg-x11-server-sdk-1.1.1-48.101.el5_10.2.ia64.rpm

ppc:
xorg-x11-server-Xdmx-1.1.1-48.101.el5_10.2.ppc.rpm
xorg-x11-server-Xephyr-1.1.1-48.101.el5_10.2.ppc.rpm
xorg-x11-server-Xnest-1.1.1-48.101.el5_10.2.ppc.rpm
xorg-x11-server-Xorg-1.1.1-48.101.el5_10.2.ppc.rpm
xorg-x11-server-Xvfb-1.1.1-48.101.el5_10.2.ppc.rpm
xorg-x11-server-Xvnc-source-1.1.1-48.101.el5_10.2.ppc.rpm
xorg-x11-server-debuginfo-1.1.1-48.101.el5_10.2.ppc.rpm
xorg-x11-server-sdk-1.1.1-48.101.el5_10.2.ppc.rpm

s390x:
xorg-x11-server-Xephyr-1.1.1-48.101.el5_10.2.s390x.rpm
xorg-x11-server-Xnest-1.1.1-48.101.el5_10.2.s390x.rpm
xorg-x11-server-Xvfb-1.1.1-48.101.el5_10.2.s390x.rpm
xorg-x11-server-Xvnc-source-1.1.1-48.101.el5_10.2.s390x.rpm
xorg-x11-server-debuginfo-1.1.1-48.101.el5_10.2.s390x.rpm

x86_64:
xorg-x11-server-Xdmx-1.1.1-48.101.el5_10.2.x86_64.rpm
xorg-x11-server-Xephyr-1.1.1-48.101.el5_10.2.x86_64.rpm
xorg-x11-server-Xnest-1.1.1-48.101.el5_10.2.x86_64.rpm
xorg-x11-server-Xorg-1.1.1-48.101.el5_10.2.x86_64.rpm
xorg-x11-server-Xvfb-1.1.1-48.101.el5_10.2.x86_64.rpm
xorg-x11-server-Xvnc-source-1.1.1-48.101.el5_10.2.x86_64.rpm
xorg-x11-server-debuginfo-1.1.1-48.101.el5_10.2.x86_64.rpm
xorg-x11-server-sdk-1.1.1-48.101.el5_10.2.x86_64.rpm

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/xorg-x11-server-1.13.0-23.1.el6_5.src.rpm

i386:
xorg-x11-server-Xephyr-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-Xorg-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-common-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.i686.rpm

x86_64:
xorg-x11-server-Xephyr-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-Xorg-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-common-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.x86_64.rpm

Red Hat Enterprise Linux Desktop Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/xorg-x11-server-1.13.0-23.1.el6_5.src.rpm

i386:
xorg-x11-server-Xdmx-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-Xnest-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-Xvfb-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-devel-1.13.0-23.1.el6_5.i686.rpm

noarch:
xorg-x11-server-source-1.13.0-23.1.el6_5.noarch.rpm

x86_64:
xorg-x11-server-Xdmx-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-Xnest-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-Xvfb-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-devel-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-devel-1.13.0-23.1.el6_5.x86_64.rpm

Red Hat Enterprise Linux HPC Node Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/xorg-x11-server-1.13.0-23.1.el6_5.src.rpm

noarch:
xorg-x11-server-source-1.13.0-23.1.el6_5.noarch.rpm

x86_64:
xorg-x11-server-Xdmx-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-Xephyr-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-Xnest-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-Xorg-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-Xvfb-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-common-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-devel-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-devel-1.13.0-23.1.el6_5.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/xorg-x11-server-1.13.0-23.1.el6_5.src.rpm

i386:
xorg-x11-server-Xephyr-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-Xorg-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-common-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.i686.rpm

ppc64:
xorg-x11-server-Xephyr-1.13.0-23.1.el6_5.ppc64.rpm
xorg-x11-server-Xorg-1.13.0-23.1.el6_5.ppc64.rpm
xorg-x11-server-common-1.13.0-23.1.el6_5.ppc64.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.ppc64.rpm

s390x:
xorg-x11-server-Xephyr-1.13.0-23.1.el6_5.s390x.rpm
xorg-x11-server-common-1.13.0-23.1.el6_5.s390x.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.s390x.rpm

x86_64:
xorg-x11-server-Xephyr-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-Xorg-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-common-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/xorg-x11-server-1.13.0-23.1.el6_5.src.rpm

i386:
xorg-x11-server-Xdmx-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-Xnest-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-Xvfb-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-devel-1.13.0-23.1.el6_5.i686.rpm

noarch:
xorg-x11-server-source-1.13.0-23.1.el6_5.noarch.rpm

ppc64:
xorg-x11-server-Xdmx-1.13.0-23.1.el6_5.ppc64.rpm
xorg-x11-server-Xnest-1.13.0-23.1.el6_5.ppc64.rpm
xorg-x11-server-Xvfb-1.13.0-23.1.el6_5.ppc64.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.ppc.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.ppc64.rpm
xorg-x11-server-devel-1.13.0-23.1.el6_5.ppc.rpm
xorg-x11-server-devel-1.13.0-23.1.el6_5.ppc64.rpm

s390x:
xorg-x11-server-Xdmx-1.13.0-23.1.el6_5.s390x.rpm
xorg-x11-server-Xnest-1.13.0-23.1.el6_5.s390x.rpm
xorg-x11-server-Xvfb-1.13.0-23.1.el6_5.s390x.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.s390x.rpm

x86_64:
xorg-x11-server-Xdmx-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-Xnest-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-Xvfb-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-devel-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-devel-1.13.0-23.1.el6_5.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/xorg-x11-server-1.13.0-23.1.el6_5.src.rpm

i386:
xorg-x11-server-Xephyr-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-Xorg-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-common-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.i686.rpm

x86_64:
xorg-x11-server-Xephyr-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-Xorg-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-common-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/xorg-x11-server-1.13.0-23.1.el6_5.src.rpm

i386:
xorg-x11-server-Xdmx-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-Xnest-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-Xvfb-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-devel-1.13.0-23.1.el6_5.i686.rpm

noarch:
xorg-x11-server-source-1.13.0-23.1.el6_5.noarch.rpm

x86_64:
xorg-x11-server-Xdmx-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-Xnest-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-Xvfb-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-debuginfo-1.13.0-23.1.el6_5.x86_64.rpm
xorg-x11-server-devel-1.13.0-23.1.el6_5.i686.rpm
xorg-x11-server-devel-1.13.0-23.1.el6_5.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2013-6424.html
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2013 Red Hat, Inc.
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