Provide references for CVE-2017-16921.
Where can I find more information about CVE-2017-16921?
References are available at: https://www.otrs.com/security-advisory-2017-09-security-update-otrs-framework/, https://lists.debian.org/debian-lts-announce/2017/12/msg00015.html, https://www.exploit-db.com/exploits/43853/, https://www.debian.org/security/2017/dsa-4066, http://packetstormsecurity.com/files/162295/OTRS-6.0.1-Remote-Command-Execution.html.