1. Ubuntu Security Notices
  2. USN-3136-1

USN-3136-1: LXC vulnerability

Publication date

23 November 2016

Overview

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

Releases

Packages

  • 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.

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

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
16.10 yakkety liblxc1 –  2.0.5-0ubuntu1.2
lxc1 –  2.0.5-0ubuntu1.2
16.04 xenial liblxc1 –  2.0.5-0ubuntu1~ubuntu16.04.3
lxc1 –  2.0.5-0ubuntu1~ubuntu16.04.3
14.04 trusty liblxc1 –  1.0.8-0ubuntu0.4
lxc –  1.0.8-0ubuntu0.4

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References

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