WINDOWS CENTER: ubuntu-security-announce Digest, Vol 90, Issue 10

Wednesday, March 14, 2012

ubuntu-security-announce Digest, Vol 90, Issue 10

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Today's Topics:

1. [USN-1399-1] gdm-guest-session vulnerability (Marc Deslauriers)
2. [USN-1399-2] Light Display Manager vulnerability
(Marc Deslauriers)

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

Message: 1
Date: Tue, 13 Mar 2012 09:49:16 -0400
From: Marc Deslauriers <marc.deslauriers@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1399-1] gdm-guest-session vulnerability
Message-ID: <1331646556.3983.94.camel@mdlinux>
Content-Type: text/plain; charset="utf-8"

==========================================================================
Ubuntu Security Notice USN-1399-1
March 13, 2012

gdm-guest-session vulnerability
==========================================================================

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

- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS

Summary:

gdm-guest-session could be made to delete files as the administrator.

Software Description:
- gdm-guest-session: gdm extension for guest session

Details:

Ryan Lortie discovered that gdm-guest-session improperly cleaned out
certain guest session files. A local attacker could use this issue to
delete arbitrary files.

Update instructions:

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

Ubuntu 11.04:
gdm-guest-session 0.24ubuntu0.1

Ubuntu 10.10:
gdm-guest-session 0.17ubuntu0.1

Ubuntu 10.04 LTS:
gdm-guest-session 0.15ubuntu0.1

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

References:
http://www.ubuntu.com/usn/usn-1399-1
CVE-2012-0943

Package Information:
https://launchpad.net/ubuntu/+source/gdm-guest-session/0.24ubuntu0.1
https://launchpad.net/ubuntu/+source/gdm-guest-session/0.17ubuntu0.1
https://launchpad.net/ubuntu/+source/gdm-guest-session/0.15ubuntu0.1

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Message: 2
Date: Tue, 13 Mar 2012 09:49:32 -0400
From: Marc Deslauriers <marc.deslauriers@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1399-2] Light Display Manager vulnerability
Message-ID: <1331646572.3983.95.camel@mdlinux>
Content-Type: text/plain; charset="utf-8"

==========================================================================
Ubuntu Security Notice USN-1399-2
March 13, 2012

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

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

- Ubuntu 11.10

Summary:

Light Display Manager could be made to delete files as the administrator.

Software Description:
- lightdm: Display Manager

Details:

Ryan Lortie discovered that a guest session script bundled in the Light
Display Manager package improperly cleaned out certain guest session files.
A local attacker could use this issue to delete arbitrary files.

Update instructions:

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

Ubuntu 11.10:
lightdm 1.0.6-0ubuntu1.6

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

References:
http://www.ubuntu.com/usn/usn-1399-2
http://www.ubuntu.com/usn/usn-1399-1
CVE-2012-0943

Package Information:
https://launchpad.net/ubuntu/+source/lightdm/1.0.6-0ubuntu1.6

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

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