An issue was discovered in Open Ticket Request System (OTRS) 6.0.x through 6.0.9, 5.0.x through 5.0.28, and 4.0.x through 4.0.30. An attacker who is logged into OTRS as an agent may escalate their privileges by accessing a specially crafted URL.
https://www.debian.org/security/2018/dsa-4317
https://lists.debian.org/debian-lts-announce/2018/08/msg00021.html
https://community.otrs.com/security-advisory-2018-03-security-update-for-otrs-framework/?lang=de