[USN-4417-1] NSS vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Mon Jul 6 19:40:13 UTC 2020

Ubuntu Security Notice USN-4417-1
July 06, 2020

nss vulnerability

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

- Ubuntu 20.04 LTS
- Ubuntu 19.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS


NSS could be made to expose sensitive information.

Software Description:
- 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 LTS:
  libnss3                         2:3.49.1-1ubuntu1.2

Ubuntu 19.10:
  libnss3                         2:3.45-1ubuntu2.4

Ubuntu 18.04 LTS:
  libnss3                         2:3.35-2ubuntu2.9

Ubuntu 16.04 LTS:
  libnss3                         2:3.28.4-0ubuntu0.16.04.12

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


Package Information:

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