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:
-
lxc-common
2.0.7-0ubuntu1~16.10.2
- Ubuntu 16.04 LTS:
-
lxc-common
2.0.7-0ubuntu1~16.04.2
- Ubuntu 14.04 LTS:
-
lxc
1.0.9-0ubuntu3
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
References
Source: USN-3224-1: LXC vulnerability
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