Provide references for CVE-2019-19709.
Where can I find more information about CVE-2019-19709?
References are available at: https://phabricator.wikimedia.org/T239466, https://gerrit.wikimedia.org/r/q/Ie54f366986056c876eade0fcad6c41f70b8b8de8, https://www.debian.org/security/2019/dsa-4592, https://seclists.org/bugtraq/2019/Dec/48.