Multiple cross-site request forgery (CSRF) vulnerabilities on Motorola Surfboard with software SB5100-2.3.3.0-SCM00-NOSH allow remote attackers to (1) cause a denial of service (device reboot) via the "Restart Cable Modem" value in the BUTTONINPUT parameter to configdata.html, and (2) cause a denial of service (hard reset) via the "Reset All Defaults" value in the BUTTONINPUT parameter to configdata.html.
The HTTP interface in the Motorola SURFboard SB4200 Cable Modem allows remote attackers to cause a denial of service (device crash) via a request with MfcISAPICommand set to SecretProc and a long string in the Secret parameter.
Motorola Surfboard 4200 cable modem allows remote attackers to cause a denial of service (crash) by performing a SYN scan using a tool such as nmap.