The Standard 802.11 it is the one that defines the characteristics and protocols of the WiFi. Researchers have discovered a security flaw in their design that may allow attackers to fool access points by leaking fragments of network packets in clear text.
These packets in Wi-Fi networks consist of a header, with origin and destination information; the information itself and a queue to delimit the end of said packet. These packets are transmitted one after the other in a controlled manner to avoid collisions. Researchers have discovered that such queued packets are not properly protected, with which, can be manipulated.
This vulnerability is due to the fact that in the standard of this design, mechanisms are included that allow WiFi access points to save energy, Using these functions to accumulate a queue of pending packets. To date, Cisco equipment discovered, DLink, Asus and Aruba vulnerable to this type of attack.
Cisco has been the first to admit the impact of this vulnerability and a fix is in the works, Confirm. They also recommend applying additional measures in TLS to encrypt traffic in transit.
Fountain: BleepingComputer