=========================================================================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://ubuntu.com/security/notices/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