Technical Advisory – Tesla BLE Phone-as-a-Key Passive Entry Vu | cRyPtHoN™ INFOSEC (EN)
Technical Advisory – Tesla BLE Phone-as-a-Key Passive Entry Vulnerable to Relay Attacks.
Summary
The Tesla Model 3 and Model Y employ a Bluetooth Low Energy (BLE) based passive entry system. This system allows users with an authorized mobile device or key fob within a short range of the vehicle to unlock and operate the vehicle, with no user interaction required on the mobile device or key fob. This system infers proximity of the mobile device or key fob based on signal strength (RSSI) and latency measurements of cryptographic challenge-response operations conducted over BLE.
