Cisco IP Phones 8800 Series SIP Denial of Service (CVE-2017-6656)

A vulnerability in Session Initiation Protocol SIP call handling of Cisco IP Phone 8800 Series devices could allow an unauthenticated, remote attacker to cause a denial of service DoS condition due to the SIP process unexpectedly restarting. All active phone calls are dropped as the SIP process...

CVE-2017-6656

Cisco IP Phone 8800 Series SIP DoS (CVE-2017-6656): An unauthenticated, remote attacker can cause the SIP process to restart, dropping all active calls. Vulnerable component: SIP call handling in Cisco IP Phone 8800 devices. Root cause noted as incomplete input validation of SIP headers per Cisco...