USN-4203-1: NSS vulnerability

Publication date

27 November 2019

Overview

NSS could be made to crash or run programs if it received specially crafted input.


Packages

  • nss - Network Security Service library

Details

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

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

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
19.10 eoan libnss3 –  2:3.45-1ubuntu2.1
19.04 disco libnss3 –  2:3.42-1ubuntu2.3
18.04 bionic libnss3 –  2:3.35-2ubuntu2.5
16.04 xenial libnss3 –  2:3.28.4-0ubuntu0.16.04.8

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.


Have additional questions?

Talk to a member of the team ›