wpa_supplicant: reinstallation of the group key (GTK) when processing a Wireless Network Management (WNM) Sleep Mode Response frame

A new exploitation technique called key reinstallation attacks KRACK affecting WPA2 has been discovered. A remote attacker within Wi-Fi range could exploit this attack to decrypt Wi-Fi traffic or possibly inject forged Wi-Fi packets by reinstalling a previously used group key GTK during a Wireles...