F5 BIG-IP TMM Denial of Service Vulnerability (CNVD-2021-65649)

F5 BIG-IP is an application delivery platform from F5 that integrates network traffic orchestration, load balancing, intelligent DNS, remote access policy management, etc. A denial of service vulnerability exists in F5 BIG-IP TMM, which stems from the presence of a DNS profile file with DNS Cache resolver enabled when associated on Virtual Server A specific request could cause the TMM process to terminate. When the TMM process is restarted, traffic is interrupted and an attacker can use this vulnerability to cause a denial of service (DoS) on the BIG-IP system.