[USN-1349-1] X.Org vulnerability

[Marc Deslauriers]

==========================================================================
Ubuntu Security Notice USN-1349-1
January 26, 2012

xorg vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS

Summary:

X could be made to start by a user who lacked appropriate permissions.

Software Description:
- xorg: X.Org X Window System

Details:

It was discovered that the X wrapper incorrectly checked certain console
permissions when launched by unprivileged users. An attacker connected
remotely could use this flaw to start X, bypassing the console permissions
check.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 11.10:
  xserver-xorg                    1:7.6+7ubuntu7.1

Ubuntu 11.04:
  xserver-xorg                    1:7.6+4ubuntu3.2

Ubuntu 10.10:
  xserver-xorg                    1:7.5+6ubuntu3.1

Ubuntu 10.04 LTS:
  xserver-xorg                    1:7.5+5ubuntu1.1

In general, a standard system update will make all the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-1349-1
  CVE-2011-4613

Package Information:
  https://launchpad.net/ubuntu/+source/xorg/1:7.6+7ubuntu7.1
  https://launchpad.net/ubuntu/+source/xorg/1:7.6+4ubuntu3.2
  https://launchpad.net/ubuntu/+source/xorg/1:7.5+6ubuntu3.1
  https://launchpad.net/ubuntu/+source/xorg/1:7.5+5ubuntu1.1


-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 836 bytes
Desc: This is a digitally signed message part
URL: <https://lists.ubuntu.com/archives/ubuntu-security-announce/attachments/20120126/5b1a9e6f/attachment.sig>