Provide references for CVE-2017-6960.
Where can I find more information about CVE-2017-6960?
References are available at: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=854367, https://lists.debian.org/debian-lts-announce/2020/03/msg00039.html, https://usn.ubuntu.com/4513-1/.