1. Ubuntu Security Notices
  2. USN-3224-1

USN-3224-1: LXC vulnerability

Publication date

9 March 2017

Overview

LXC could be made to create arbitrary virtual network interfaces as an administrator.

Releases

Packages

  • lxc - Linux Containers userspace tools

Details

Jann Horn discovered that LXC incorrectly verified permissions when creating
virtual network interfaces. A local attacker could possibly use this issue to
create virtual network interfaces in network namespaces that they do not own.

Jann Horn discovered that LXC incorrectly verified permissions when creating
virtual network interfaces. A local attacker could possibly use this issue to
create virtual network interfaces in network namespaces that they do not own.

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 lxc-common –  2.0.7-0ubuntu1~16.10.2
16.04 xenial lxc-common –  2.0.7-0ubuntu1~16.04.2
14.04 trusty lxc –  1.0.9-0ubuntu3

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References

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