GHSA-QP4F-2W67-C8HW Inbound TCP Agent Protocol/3 authentication bypass in Jenkins

Jenkins 2.213 and earlier, LTS 2.204.1 and earlier includes support for the Inbound TCP Agent Protocol/3 for communication between controller and agents. While this protocol has been deprecated in 2018 and was recently removed from Jenkins in 2.214, it could still easily be enabled in Jenkins LTS...