CVE-2019-17023

Published: 08 January 2020

After a HelloRetryRequest has been sent, the client may negotiate a lower protocol that TLS 1.3, resulting in an invalid state transition in the TLS State Machine. If the client gets into this state, incoming Application Data records will be ignored. This vulnerability affects Firefox < 72.

Priority

Low

CVSS 3 base score: 6.5

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
Upstream
Released (72.0)
Ubuntu 20.10 (Groovy Gorilla)
Released (72.0.1+build1-0ubuntu1)
Ubuntu 20.04 LTS (Focal Fossa)
Released (72.0.1+build1-0ubuntu1)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (72.0.1+build1-0ubuntu0.18.04.1)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (72.0.1+build1-0ubuntu0.16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

nss
Launchpad, Ubuntu, Debian
Upstream
Released (2:3.49-1)
Ubuntu 20.10 (Groovy Gorilla) Not vulnerable
(2:3.49.1-1ubuntu1)
Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(2:3.49.1-1ubuntu1)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (2:3.35-2ubuntu2.8)
Ubuntu 16.04 LTS (Xenial Xerus) Not vulnerable
(code not compiled)
Ubuntu 14.04 ESM (Trusty Tahr) Not vulnerable

Patches:
Upstream: https://hg.mozilla.org/projects/nss/rev/d64102b76a437f24d98a20480dcc9f1655143e7c
Upstream: https://hg.mozilla.org/projects/nss/rev/8a2bd40e7f89a796cf24a0ff7cfb67c6e69c5c78