[USN-2104-1] LXC vulnerability
Marc Deslauriers
marc.deslauriers at canonical.com
Wed Feb 12 19:08:22 UTC 2014
==========================================================================
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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