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USN-4417-1: NSS vulnerability

6 July 2020

NSS could be made to expose sensitive information.



  • nss - Network Security Service library


Cesar Pereida, Billy Bob Brumley, Yuval Yarom, and Nicola Tuveri discovered
that NSS incorrectly handled RSA key generation. A local attacker could
possibly use this issue to perform a timing attack and recover RSA keys.

Update instructions

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

Ubuntu 20.04
Ubuntu 19.10
Ubuntu 18.04
Ubuntu 16.04

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


Related notices

  • USN-4417-2: libnss3-1d, nss, libnss3-dev, libnss3-nssdb, libnss3, libnss3-tools