Exploit that gives remote access affects ~200 million cable modems (ars technica)

Ars technica reports on the "Cable Haunt" vulnerability that afflicts a large number of cable modems. "The first and most straightforward way is to serve malicious JavaScript that causes the browser to connect to the modem. Normally, a mechanism called cross-origin resource sharing prevents a Web application from one origin (such as malicious.example.com) from working on a different origin (such as 192.168.100.1, the address used by most or all of the vulnerable modems). Websockets, however, aren't protected by CORS, as the mechanism is usually called. As a result, the modems will accept the remote JavaScript, thereby allowing attackers to reach the endpoint and serve it code." Thus far, there doesn't seem to be any information out there on whether routers running OpenWrt are vulnerable.

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