CVE-2020-6829

Published: 05 August 2020

When performing EC scalar point multiplication, the wNAF point multiplication algorithm was used; which leaked partial information about the nonce used during signature generation. Given an electro-magnetic trace of a few signature generations, the private key could have been computed. This vulnerability affects Firefox < 80 and Firefox for Android < 80.

Priority

Medium

CVSS 3 base score: 5.3

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
Upstream
Released (80)
Ubuntu 20.04 LTS (Focal Fossa)
Released (80.0+build2-0ubuntu0.20.04.1)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (80.0+build2-0ubuntu0.18.04.1)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (80.0+build2-0ubuntu0.16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

nss
Launchpad, Ubuntu, Debian
Upstream
Released (2:3.55-1)
Ubuntu 20.04 LTS (Focal Fossa)
Released (2:3.49.1-1ubuntu1.4)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (2:3.35-2ubuntu2.11)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (2:3.28.4-0ubuntu0.16.04.13)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (2:3.28.4-0ubuntu0.14.04.5+esm7)
Patches:
Upstream: https://hg.mozilla.org/projects/nss/rev/e55ab3145546ae3cf1333b43956a974675d2d25c
Upstream: https://hg.mozilla.org/projects/nss/rev/3f022d5eca5d3cd0e366a825a5681953d76299d0