Belkin WiFi routers at risk from multiple vulnerabilities

Flaws have not been patched and there are no workarounds for many of them, says US CERT.

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Disappointing news to hear this.  According to an advisory by US-CERT, The Belkin N600 DB Wireless Dual Band N+ router model F9K1102 v2 with firmware version 2.10.17 has flaws that could allow a hacker to arbitrarily inject files, perform man-in-the-middle attacks and forge cross-site requests.  “A remote, unauthenticated attacker may be able to spoof DNS responses to cause vulnerable devices to contact attacker-controlled hosts or induce an authenticated user into making an unintentional request to the web server that will be treated as an authentic request,” said the US-CERT advisory. “A LAN-based attacker can bypass authentication to take complete control of vulnerable devices.”  In May, security researcher Kafeine warned that more than 40 popular routers (not just Belkin) were vulnerable to cross-site request forgery pharming attacks.  According to US-CERT’s advisory issued on Monday, DNS queries from the N600 such as those to resolve the names of firmware update and NTP servers, use predictable TXIDs that start at 0x0002 and increase incrementally. An attacker with the ability to spoof DNS responses can cause the router to contact incorrect or malicious hosts under the attacker’s control.  The router also uses HTTP by default for checking and transmitting firmware update information to vulnerable routers. An attacker capable of conducting man-in-the-middle attacks can manipulate traffic to block updates or inject arbitrary files.

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