[USN-3898-1] NSS vulnerability

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==========================================================================
Ubuntu Security Notice USN-3898-1
February 27, 2019

nss vulnerability
==========================================================================

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

- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

NSS could be made to crash if it received specially crafted network
traffic.

Software Description:
- nss: Network Security Service library

Details:

Hanno Böck and Damian Poddebniak discovered that NSS incorrectly handled
certain CMS functions. A remote attacker could possibly use this issue to
cause NSS to crash, resulting in a denial of service.

Update instructions:

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

Ubuntu 18.10:
libnss3 2:3.36.1-1ubuntu1.2

Ubuntu 18.04 LTS:
libnss3 2:3.35-2ubuntu2.2

Ubuntu 16.04 LTS:
libnss3 2:3.28.4-0ubuntu0.16.04.5

Ubuntu 14.04 LTS:
libnss3 2:3.28.4-0ubuntu0.14.04.5

After a standard system update you need to restart any applications that
use NSS, such as Evolution, to make all the necessary changes.

References:
https://usn.ubuntu.com/usn/usn-3898-1
CVE-2018-18508

Package Information:
https://launchpad.net/ubuntu/+source/nss/2:3.36.1-1ubuntu1.2
https://launchpad.net/ubuntu/+source/nss/2:3.35-2ubuntu2.2
https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.16.04.5
https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.14.04.5