In and of itself, it's not such a big deal," Horowitz said.īut, he added, "UPnP on the internet is like going in for surgery and having the doctor work on the wrong leg."Īnother problem is the Home Network Administration Protocol (HNAP), a management tool found on some older consumer-grade routers that transmits sensitive information about the router over the Web at IP address]/HNAP1/, and grants full control to remote users who provide administrative usernames and passwords (which many users never change from the factory defaults). "UPnP was designed for LANs, and as such, it has no security.
Millions of routers throughout the world, even some of the best ones, have the Universal Plug and Play (UPnP) networking protocol enabled on internet-facing ports, which exposes them to external attack. Some other devices will not accept passwords longer than 16 characters - the minimum length for password safety today.
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Many consumer-grade home-gateway devices fail to notify users if and when firmware updates become available, even though those updates are essential to patch security holes, Horowitz noted. "A compromised router can spy on you," Horowitz said, explaining that a router under an attacker's control can stage a man-in-the-middle attack, alter unencrypted data or send the user to "evil twin" websites masquerading as often-used webmail or online-banking portals.
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