Provide references for CVE-2018-1000671.
Where can I find more information about CVE-2018-1000671?
References are available at: https://github.com/sympa-community/sympa/issues/268, https://lists.debian.org/debian-lts-announce/2018/09/msg00023.html, https://usn.ubuntu.com/4442-1/, https://lists.debian.org/debian-lts-announce/2020/11/msg00015.html.