[USN-3311-2] libnl vulnerability

[Tyler Hicks]

==========================================================================
Ubuntu Security Notice USN-3311-2
June 19, 2017

libnl3 vulnerability
==========================================================================

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

- Ubuntu 12.04 ESM

Summary:

libnl could be made to run programs as an administrator.

Software Description:
- libnl3: library for dealing with netlink sockets

Details:

USN-3311-1 fixed a vulnerability in libnl. This update provides the
corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

 It was discovered that libnl incorrectly handled memory when performing
 certain operations. A local attacker could possibly use this issue to cause
 libnl to crash, resulting in a denial of service, or execute arbitrary
 code.

Update instructions:

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

Ubuntu 12.04 ESM:
  libnl-3-200                     3.2.3-2ubuntu2.1

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
  https://www.ubuntu.com/usn/usn-3311-2
  https://www.ubuntu.com/usn/usn-3311-1
  CVE-2017-0553

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