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Gmane
From: Marc Deslauriers <marc.deslauriers <at> canonical.com>
Subject: [USN-1950-1] Light Display Manager vulnerability
Newsgroups: gmane.linux.ubuntu.security.announce
Date: Thursday 12th September 2013 15:30:28 UTC (over 3 years ago)
==========================================================================
Ubuntu Security Notice USN-1950-1
September 12, 2013

lightdm vulnerability
==========================================================================

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

- Ubuntu 13.04

Summary:

Light Display Manager could be made to expose sensitive information.

Software Description:
- lightdm: Display Manager

Details:

It was discovered that Light Display Manager created .Xauthority files with
incorrect permissions. A local attacker could use this flaw to bypass
access restrictions.

Update instructions:

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

Ubuntu 13.04:
  lightdm                         1.6.0-0ubuntu3.1

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-1950-1
  CVE-2013-4331

Package Information:
  https://launchpad.net/ubuntu/+source/lightdm/1.6.0-0ubuntu3.1
 
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