Executive summary

Today, Cisco Talos is disclosing three vulnerabilities in coTURN. coTURN is an open-source implementation of TURN and STUN servers that can be used as a general-purpose networking traffic TURN server. TURN servers are usually deployed in so-called “DMZ” zones — any server reachable from the internet — to provide firewall traversal solutions.

https://blog.talosintelligence.com/2019/01/vulnerability-spotlight-multiple.html