CVEs-PoC/2021/CVE-2021-34147.md

CVE-2021-34147

Description

The Bluetooth Classic implementation in the Cypress WICED BT stack through 2.9.0 for CYW20735B1 does not properly handle the reception of a malformed LMP timing accuracy response followed by multiple reconnections to the link slave, allowing attackers to exhaust device BT resources and eventually trigger a crash via multiple attempts of sending a crafted LMP timing accuracy response followed by a sudden reconnection with a random BDAddress.

POC

Reference

• https://dl.packetstormsecurity.net/papers/general/braktooth.pdf

Github

• https://github.com/ARPSyndicate/cvemon
• https://github.com/JeffroMF/awesome-bluetooth-security321
• https://github.com/engn33r/awesome-bluetooth-security