With ICMP magic, you can snoop on vulnerable HiSilicon, Qualcomm-powered Wi-Fi
While Reg readers know the difference between a true hacker and cyber-crook, for everyone else, hacking means illegal activity
The redirect messages cause the victim's device to ultimately reroute its traffic to another destination. A snoop on the network can send ICMP redirect messages, dressed up as though they are legit and coming from the Wi-Fi router, to a victim via the AP so that the victim's device eventually redirects its network traffic to a system under the spy's control, allowing the miscreant to siphon off and observe their Wi-Fi traffic.
"[W]e discover that the crafted ICMP redirect message can always be successfully forwarded to the victim," the computer scientists wrote."It cannot be blocked by the AP and existing security mechanisms. There are, as we said, other steps involved, such as discovering open UDP ports – needed to get the victim's device to accept the ICMP redirect messages, interestingly enough – and stripping away the WPA encryption. A video demonstration of the attack has been publishedThe researchers say they tested 55 AP products from ten vendors and none could block the forged ICMP messages. They also claim that 109 of 122 Wi-Fi networks tested were vulnerable to this attack.
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