CVE-2023-28899 : Exploit Details and Defense Strategies

This CVE record was assigned by ASRG and published on January 12, 2024. It involves a vulnerability that allows attackers to cause denial of service via ECU reset service on Skoda vehicles.

Understanding CVE-2023-28899

This section will delve into the details of CVE-2023-28899, outlining what the vulnerability entails and its potential impact.

What is CVE-2023-28899?

CVE-2023-28899 is a vulnerability that can be exploited by sending a specific reset UDS request via the OBDII port of Skoda vehicles. This can lead to the shutdown of the vehicle's engine and denial of service of other vehicle components, even when the vehicle is in motion at high speeds. It is important to note that safety critical functions are not affected by this vulnerability.

The Impact of CVE-2023-28899

The impact of this vulnerability is deemed to be of medium severity with a CVSS base score of 4.7. The attack complexity is high, requiring local access, and no privileges are needed for exploitation. The availability impact is high, as it can lead to service denial, but there is no impact on confidentiality or integrity of data. User interaction is required for the exploit to be successful.

Technical Details of CVE-2023-28899

In this section, we will explore the technical aspects of CVE-2023-28899 to provide a deeper understanding of the vulnerability.

Vulnerability Description

The vulnerability allows for the triggering of a denial of service attack by sending a specific reset UDS request via the OBDII port of Skoda vehicles.

Affected Systems and Versions

The vulnerability affects Skoda vehicles with the "Superb III" product, specifically the "2.0 TDI" version with a version less than or equal to 2022.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a tailored reset UDS request through the OBDII port of the affected Skoda vehicles, triggering engine shutdown and denial of service for other vehicle components.

Mitigation and Prevention

To mitigate the risks associated with CVE-2023-28899, it is crucial to take immediate steps and adopt long-term security practices.

Immediate Steps to Take

Implement network segmentation to restrict access to critical vehicle systems.
Regularly update and patch the vehicle's software to address known vulnerabilities.

Long-Term Security Practices

Invest in intrusion detection systems for early threat detection.
Conduct regular security audits and penetration testing to identify and address vulnerabilities proactively.

Patching and Updates

Keep abreast of security advisories from Skoda and apply recommended patches and updates promptly to mitigate the risk of exploitation through CVE-2023-28899.