Mitel 6869i SIP Security Vulnerability

Mitel 6869i SIP is a powerful and scalable desk phone from Mitel Canada. A security vulnerability exists in Mitel 6869i versions 4.5.0.41 and earlier, 5.0.0.1018 and earlier, which stems from the provis.html endpoint that does not clean up the hostname parameter, and can be exploited by an attack...