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USN-3224-1: LXC vulnerability

9 March 2017

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

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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.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 16.10
Ubuntu 16.04
Ubuntu 14.04

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

References

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Further reading