Advisory Details

July 18th, 2023

(Pwn2Own) Tesla Model 3 Gateway Firmware Signature Validation Bypass Vulnerability

ZDI-23-972
ZDI-CAN-20734

CVE ID CVE-2023-32156
CVSS SCORE 9.0, AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
AFFECTED VENDORS Tesla
AFFECTED PRODUCTS Model 3
VULNERABILITY DETAILS

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected Tesla Model 3 vehicles. An attacker must first obtain the ability to execute privileged code on the Tesla infotainment system in order to exploit this vulnerability.

The specific flaw exists within the handling of firmware updates. The issue results from improper error-handling during the update process. An attacker can leverage this vulnerability to execute code in the context of Tesla's Gateway ECU.
ADDITIONAL DETAILS

Fixed in 2023.12 firmware release.
DISCLOSURE TIMELINE
  • 2023-03-30 - Vulnerability reported to vendor
  • 2023-07-18 - Coordinated public release of advisory
CREDIT David BERARD (@_p0ly_) and Vincent DEHORS (@vdehors) from Synacktiv (@Synacktiv)
BACK TO ADVISORIES