==========================================================================
Ubuntu Security Notice USN-3136-1
November 23, 2016
lxc vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 16.10
– Ubuntu 16.04 LTS
– Ubuntu 14.04 LTS
Summary:
LXC could be made to allow containers to access to the host filesystem.
Software Description:
– lxc: Linux Containers userspace tools
Details:
Roman Fiedler discovered a directory traversal flaw in lxc-attach. An
attacker with access to an LXC container could exploit this flaw to access
files outside of the container.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.10:
liblxc1 2.0.5-0ubuntu1.2
lxc1 2.0.5-0ubuntu1.2
Ubuntu 16.04 LTS:
liblxc1 2.0.5-0ubuntu1~ubuntu16.04.3
lxc1 2.0.5-0ubuntu1~ubuntu16.04.3
Ubuntu 14.04 LTS:
liblxc1 1.0.8-0ubuntu0.4
lxc 1.0.8-0ubuntu0.4
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-3136-1
CVE-2016-8649
Package Information:
https://launchpad.net/ubuntu/+source/lxc/2.0.5-0ubuntu1.2
https://launchpad.net/ubuntu/+source/lxc/2.0.5-0ubuntu1~ubuntu16.04.3
https://launchpad.net/ubuntu/+source/lxc/1.0.8-0ubuntu0.4
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