[USN-3730-1] LXC vulnerability

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[USN-3730-1] LXC vulnerability

Marc Deslauriers-3
==========================================================================
Ubuntu Security Notice USN-3730-1
August 06, 2018

lxc vulnerability
==========================================================================

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

- Ubuntu 18.04 LTS

Summary:

LXC would allow unintended access to files.

Software Description:
- lxc: Linux Containers userspace tools

Details:

Matthias Gerstner discovered that LXC incorrectly handled the lxc-user-nic
utility. A local attacker could possibly use this issue to open arbitrary
files.

Update instructions:

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

Ubuntu 18.04 LTS:
  lxc                             3.0.1-0ubuntu1~18.04.2

After a standard system update you need to restart LXC containers to make
all the necessary changes.

References:
  https://usn.ubuntu.com/usn/usn-3730-1
  CVE-2018-6556

Package Information:
  https://launchpad.net/ubuntu/+source/lxc/3.0.1-0ubuntu1~18.04.2


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