Provide references for CVE-2019-19920.
Where can I find more information about CVE-2019-19920?
References are available at: https://bugs.debian.org/946829#24, https://marc.info/?l=spamassassin-users&m=157668107325768&w=2, https://marc.info/?l=spamassassin-users&m=157668305026635&w=2, https://lists.debian.org/debian-lts-announce/2020/01/msg00006.html, https://usn.ubuntu.com/4520-1/.