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USN-3136-1: LXC vulnerability

USN-3136-1: LXC vulnerability

Ubuntu Security Notice USN-3136-1

23rd November, 2016

lxc vulnerability

A security issue affects these releases of Ubuntu and its
derivatives:

Summary

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

Software description

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.

Update instructions

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

Ubuntu 16.10:
lxc1

2.0.5-0ubuntu1.2
liblxc1

2.0.5-0ubuntu1.2
Ubuntu 16.04 LTS:
lxc1

2.0.5-0ubuntu1~ubuntu16.04.3
liblxc1

2.0.5-0ubuntu1~ubuntu16.04.3
Ubuntu 14.04 LTS:
lxc

1.0.8-0ubuntu0.4
liblxc1

1.0.8-0ubuntu0.4

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

CVE-2016-8649

Source: USN-3136-1: LXC vulnerability

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