system
Provide references for <CVE-2018-6521>.
user
Where can I find more information about <CVE-2018-6521>?
assistant
References are available at: https://simplesamlphp.org/security/201801-03, https://lists.debian.org/debian-lts-announce/2018/02/msg00008.html, https://www.debian.org/security/2018/dsa-4127.