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 BUTTON_INPUT parameter to configdata.html and (2) cause a denial of service (hard reset) via the \Reset All Defaults\ value in the BUTTON_INPUT parameter to configdata.html.