USN-3224-1: LXC vulnerability

Ubuntu Security Notice USN-3224-1

9th March, 2017

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 create arbitrary virtual network interfaces as an
administrator.

Software description

• 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.

Update instructions

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

Ubuntu 16.10:

Ubuntu 16.04 LTS:

Ubuntu 14.04 LTS:

To update your system, please follow these instructions: