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USN-3136-1: LXC vulnerability

23 November 2016

LXC could be made to allow containers to access to the host filesystem.

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Releases

Packages

  • lxc - Linux Containers userspace tools

Details

Roman Fiedler discovered a directory traversal flaw in lxc-attach. An
attacker with access to an LXC container could exploit this flaw to access
files outside of the container.

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