CVE-2018-16806 Explained : Impact and Mitigation

The PKES system in the Tesla Model S and potentially other vehicles is vulnerable due to the DST40 cipher, allowing attackers to clone key fobs.

Understanding CVE-2018-16806

The vulnerability in the PKES system enables attackers to gain unauthorized access to vehicles using a specific cipher.

What is CVE-2018-16806?

The PKES system in vehicles like the Tesla Model S relies on the DST40 cipher, which can be exploited by attackers to duplicate key fobs.

The Impact of CVE-2018-16806

This vulnerability allows attackers to potentially gain access to vehicles by cloning key fobs, posing a significant security risk to vehicle owners.

Technical Details of CVE-2018-16806

The technical aspects of the vulnerability provide insight into how attackers can exploit the system.

Vulnerability Description

The vulnerability stems from the use of the DST40 cipher in the PKES system, making it susceptible to unauthorized access.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions: Not applicable

Exploitation Mechanism

Attackers perform a precomputation process of 5.4 TB
Followed by wake-frame reception
Successfully completing two challenge/response operations
Allows attackers to duplicate a key fob in seconds

Mitigation and Prevention

Protecting against CVE-2018-16806 involves immediate and long-term security measures.

Immediate Steps to Take

Implement additional authentication measures
Regularly update vehicle software
Be cautious of suspicious activities around the vehicle

Long-Term Security Practices

Use physical key-based entry systems as a backup
Monitor and restrict access to key fobs

Patching and Updates

Install security patches provided by the vehicle manufacturer
Stay informed about security updates and advisories