CVE-2020-29439 : Exploit Details and Defense Strategies

Tesla Model X vehicles before 2020-11-23 have key fobs that rely on five VIN digits for authentication, potentially exposing a vulnerability.

Understanding CVE-2020-29439

Tesla Model X vehicles manufactured before a specific date have a security vulnerability related to key fob authentication.

What is CVE-2020-29439?

The vulnerability in Tesla Model X vehicles allows attackers to potentially exploit the authentication process using only five visible VIN digits.

The Impact of CVE-2020-29439

This vulnerability could lead to unauthorized access to the vehicle's body control module (BCM) through a compromised Bluetooth wake-up action.

Technical Details of CVE-2020-29439

Tesla Model X vehicles are affected by a key fob authentication vulnerability that relies on a limited number of visible VIN digits.

Vulnerability Description

The key fobs of Tesla Model X vehicles before 2020-11-23 use only five VIN digits for authentication, making it easier for attackers to potentially compromise the system.

Affected Systems and Versions

Product: Tesla Model X
Vendor: Tesla
Versions: All vehicles manufactured before 2020-11-23

Exploitation Mechanism

Attackers can exploit the limited VIN digits visible from outside the vehicle to gain unauthorized access to the body control module (BCM) via Bluetooth wake-up action.

Mitigation and Prevention

Steps to address and prevent the CVE-2020-29439 vulnerability in Tesla Model X vehicles.

Immediate Steps to Take

Update key fobs: Tesla owners should ensure their vehicles are updated to the latest firmware that addresses this vulnerability.
Enhance physical security: Owners can consider additional physical security measures to protect against unauthorized access.

Long-Term Security Practices

Regularly update software: Stay vigilant about software updates provided by Tesla to address security vulnerabilities.
Implement multi-factor authentication: Consider using additional layers of authentication for enhanced security.

Patching and Updates

Tesla may release patches or updates to address the key fob vulnerability. Owners should regularly check for and apply these updates.