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Undocumented Commands Found In Bluetooth Chip Manufactured in China Used By a Billion Devices.
(www.tarlogic.com)
Source Link Privacy.
Tarlogic Security has detected a backdoor in the ESP32, a microcontroller that enables WiFi and Bluetooth connection and is present in millions of mass-market IoT devices. Exploitation of this backdoor would allow hostile actors to conduct impersonation attacks and permanently infect sensitive devices such as mobile phones, computers, smart locks or medical equipment by bypassing code audit controls.
Update: The ESP32 "backdoor" that wasn't.
I have a bunch of ESP32's that ... I can update and replace the firmware on, if i reset it the right way with a usb cable. the web site doesn't explain it any way how this is any worse than that...?
The website is also the guy trying to sell the solution so I'm just sceptical for now
This can be done wirelessly, if the custom driver has been installed.