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Ubuntu Security Notice USN-3311-1
June 06, 2017

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

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

– Ubuntu 17.04
– Ubuntu 16.10
– Ubuntu 16.04 LTS
– Ubuntu 14.04 LTS

Summary:

libnl could be made to crash or run programs.

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

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 17.04:
libnl-3-200 3.2.29-0ubuntu2.1

Ubuntu 16.10:
libnl-3-200 3.2.27-1ubuntu0.16.10.1

Ubuntu 16.04 LTS:
libnl-3-200 3.2.27-1ubuntu0.16.04.1

Ubuntu 14.04 LTS:
libnl-3-200 3.2.21-1ubuntu4.1

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

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

Package Information:
https://launchpad.net/ubuntu/+source/libnl3/3.2.29-0ubuntu2.1
https://launchpad.net/ubuntu/+source/libnl3/3.2.27-1ubuntu0.16.10.1
https://launchpad.net/ubuntu/+source/libnl3/3.2.27-1ubuntu0.16.04.1
https://launchpad.net/ubuntu/+source/libnl3/3.2.21-1ubuntu4.1

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