Undocumented Commands Found In Bluetooth Chip Manufactured in China Used By a Billion Devices. (www.tarlogic.com)
from Tea@programming.dev to cybersecurity@infosec.pub on 08 Mar 21:06
https://programming.dev/post/26583285

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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.

#cybersecurity

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gibmiser@lemmy.world on 08 Mar 22:22 next collapse

<img alt="" src="https://lemmy.world/pictrs/image/287db531-343d-4c10-b30f-93caee11cebc.jpeg">

MajorHavoc@programming.dev on 09 Mar 12:53 collapse

Yeah. We found the thing we were pretty sure was there!

Though, if it’s really just local debug commands, then the usual “malice vs stupidity” debate is still up for grabs.

Treczoks@lemmy.world on 08 Mar 22:50 next collapse

That is a big one. IoT lives off ESP32.

taaz@biglemmowski.win on 08 Mar 23:04 next collapse

Here is hoping this will at least make it easier to take back control of tuya devices

sin_free_for_00_days@sopuli.xyz on 08 Mar 23:06 next collapse

And then there is trump, the illegitimate president, Russian stooge, trying to repeal the CHIPS act.

unabart@sh.itjust.works on 08 Mar 23:38 next collapse

Well, at least nobody uses that tech. /s

The_Decryptor@aussie.zone on 09 Mar 01:56 next collapse

Tarlogic has detected that ESP32 chips, which allow connectivity via WiFi or Bluetooth, have hidden commands not documented by the manufacturer. These commands would allow modifying the chips arbitrarily to unlock additional functionalities, infecting these chips with malicious code, and even carrying out attacks of identity theft of devices.

It’s not a backdoor, it’s a jailbreak. Sounds like they left the debug functionality enabled but just undocumented.

Edit: They’re undocumented HCI commands, that’s the protocol the host (aka CPU) uses to talk to the chip, not a remote device.

vane@lemmy.world on 09 Mar 13:36 next collapse

Since when HCI is backdoor ? Someone doesn’t understand how bluetooth works. HCI allows for vendor extensions by design. bluetooth.com/…/host-controller-interface-functio…

kolorafa@lemmy.world on 09 Mar 15:06 collapse

lemmy.world/post/26559432