Rancher agents can be hijacked by taking over the Rancher Server URL

A vulnerability has been identified within Rancher that can be exploited

in narrow circumstances through a man-in-the-middle (MITM) attack. An

attacker would need to have control of an expired domain or execute a

DNS spoofing/hijacking attack against the domain to exploit this

vulnerability. The targeted domain is the one used as the Rancher URL.