An exploitable heap out-of-bounds read vulnerability exists in the way CoTURN 4.5.1.1 web server parses POST requests. A specially crafted HTTP POST request can lead to information leaks and other misbehavior. An attacker needs to send an HTTPS request to trigger this vulnerability.
https://www.debian.org/security/2020/dsa-4711
https://usn.ubuntu.com/4415-1/
https://talosintelligence.com/vulnerability_reports/TALOS-2020-0984