==========================================================================
Ubuntu Security Notice USN-5410-1
May 11, 2022

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

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

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

NSS could be made to stop responding if it received a specially crafted 
message.

Software Description:
- nss: Network Security Service library

Details:

Lenny Wang discovered that NSS incorrectly handled certain
messages. A remote attacker could possibly use this issue to cause
servers compiled with NSS to stop responding, resulting in a denial of 
service.

Update instructions:

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

Ubuntu 20.04 LTS:
   libnss3                         2:3.49.1-1ubuntu1.7

Ubuntu 18.04 LTS:
   libnss3                         2:3.35-2ubuntu2.14

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

References:
   https://ubuntu.com/security/notices/USN-5410-1
   CVE-2020-25648

Package Information:
   https://launchpad.net/ubuntu/+source/nss/2:3.49.1-1ubuntu1.7
   https://launchpad.net/ubuntu/+source/nss/2:3.35-2ubuntu2.14