ubuntu-security-announce Digest, Vol 113, Issue 7

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Today's Topics:

1. [USN-2104-1] LXC vulnerability (Marc Deslauriers)


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

Message: 1
Date: Wed, 12 Feb 2014 14:08:22 -0500
From: Marc Deslauriers <marc.deslauriers@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-2104-1] LXC vulnerability
Message-ID: <52FBC6A6.3070608@canonical.com>
Content-Type: text/plain; charset="utf-8"

==========================================================================
Ubuntu Security Notice USN-2104-1
February 12, 2014

lxc vulnerability
==========================================================================

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

- Ubuntu 13.10

Summary:

LXC would allow unintended access to the host, bypassing intended
confinement.

Software Description:
- lxc: Linux Containers userspace tools

Details:

Florian Sagar discovered that the LXC sshd template set incorrect mount
permissions. An attacker could possibly use this flaw to cause privilege
escalation on the host.

Update instructions:

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

Ubuntu 13.10:
lxc-templates 1.0.0~alpha1-0ubuntu14.1

After a standard system update you need to recreate LXC containers created
with the sshd template to make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-2104-1
CVE-2013-6441

Package Information:
https://launchpad.net/ubuntu/+source/lxc/1.0.0~alpha1-0ubuntu14.1


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End of ubuntu-security-announce Digest, Vol 113, Issue 7
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