Thursday, April 11, 2019

WPA3 Is Full of Security Holes

According to researchers, the next-generation WPA3 wifi security protocol is chock full of security holes.

The Dragonfly handshake, which forms the core of WPA3, is also used on certain Wi-Fi networks that require a username and password for access control. That is, Dragonfly is also used in the EAP-pwd protocol. Unfortunately, our attacks against WPA3 also work against EAP-pwd, meaning an adversary can even recover a user's password when EAP-pwd is used. We also discovered serious bugs in most products that implement EAP-pwd. These allow an adversary to impersonate any user, and thereby access the Wi-Fi network, without knowing the user's password. Although we believe that EAP-pwd is used fairly infrequently, this still poses serious risks for many users, and illustrates the risks of incorrectly implementing Dragonfly.