ubuntu-security-announce Digest, Vol 108, Issue 6

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Today's Topics:

1. [USN-1950-1] Light Display Manager vulnerability
(Marc Deslauriers)


----------------------------------------------------------------------

Message: 1
Date: Thu, 12 Sep 2013 11:30:28 -0400
From: Marc Deslauriers <marc.deslauriers@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1950-1] Light Display Manager vulnerability
Message-ID: <5231DE14.9050305@canonical.com>
Content-Type: text/plain; charset="utf-8"

==========================================================================
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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End of ubuntu-security-announce Digest, Vol 108, Issue 6
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