USN-4417-1: NSS vulnerability

Releases

• Ubuntu 20.04 LTS
• Ubuntu 19.10
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• nss - Network Security Service library

Details

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

• libnss3 - 2:3.49.1-1ubuntu1.2

Ubuntu 19.10

• libnss3 - 2:3.45-1ubuntu2.4

Ubuntu 18.04

• libnss3 - 2:3.35-2ubuntu2.9

Ubuntu 16.04

• 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.

References

• CVE-2020-12402

Related notices

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