An issue was discovered in manager.c in Sangoma Asterisk through 13.x, 16.x, 17.x and Certified Asterisk 13.21 through 13.21-cert4. A remote authenticated Asterisk Manager Interface (AMI) user without system authorization could use a specially crafted Originate AMI request to execute arbitrary system commands.
https://www.asterisk.org/downloads/security-advisories
https://lists.debian.org/debian-lts-announce/2022/04/msg00001.html
https://lists.debian.org/debian-lts-announce/2019/11/msg00038.html
http://downloads.asterisk.org/pub/security/AST-2019-007.html