Ubuntu alert USN-1349-1 (xorg)

From:
    	     
 
Marc Deslauriers <marc.deslauriers@canonical.com> 
To:
    	     
 
ubuntu-security-announce@lists.ubuntu.com 
Subject:
    	     
 
[USN-1349-1] X.Org vulnerability 
Date:
    	     
 
Thu, 26 Jan 2012 13:40:22 -0500
Message-ID:
    	     
 
<1327603222.3101.36.camel@mdlinux>

==========================================================================
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


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