LXC would allow unintended access to files.
Matthias Gerstner discovered that LXC incorrectly handled the lxc-user-nic utility. A local attacker could possibly use this issue to open arbitrary files.
6 August 2018
A security issue affects these releases of Ubuntu and its derivatives:
LXC would allow unintended access to files.
Matthias Gerstner discovered that LXC incorrectly handled the lxc-user-nic utility. A local attacker could possibly use this issue to open arbitrary files.
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart LXC containers to make all the necessary changes.
Vulmon