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USN-3136-1: LXC vulnerability

23 November 2016

LXC could be made to allow containers to access to the host filesystem.



  • lxc - Linux Containers userspace tools


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
Ubuntu 16.04
Ubuntu 14.04

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