CVE-2018-12384

Published: 04 September 2018

When handling a SSLv2-compatible ClientHello request, the server doesn't generate a new random value but sends an all-zero value instead. This results in full malleability of the ClientHello for SSLv2 used for TLS 1.2 in all versions prior to NSS 3.39. This does not impact TLS 1.3.

Priority

Low

CVSS 3 base score: 5.9

Status

Package Release Status
nss
Launchpad, Ubuntu, Debian
Upstream
Released (3.36.5,3.39)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (2:3.35-2ubuntu2.1)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (2:3.28.4-0ubuntu0.16.04.4)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (2:3.28.4-0ubuntu0.14.04.4)
Patches:
Upstream: https://hg.mozilla.org/projects/nss/rev/46f9a1f40c3d (3.36)
Upstream: https://hg.mozilla.org/projects/nss/rev/f182a11fbe53 (3.36)