CVE-2021-23908 : Security Advisory and Response

An issue was discovered in the Headunit NTG6 in the MBUX Infotainment System on Mercedes-Benz vehicles through 2021. This CVE-2021-23908 involves a type confusion issue in MultiSvSetAttributes within the HiQnet Protocol, which can potentially lead to remote code execution.

Understanding CVE-2021-23908

This section provides an overview of the CVE-2021-23908 vulnerability and its impact, along with technical details and mitigation strategies.

What is CVE-2021-23908?

The vulnerability identified as CVE-2021-23908 affects the Headunit NTG6 in the MBUX Infotainment System used in Mercedes-Benz vehicles until the end of 2021. It stems from a type confusion flaw within the HiQnet Protocol, specifically impacting the MultiSvSetAttributes function.

The Impact of CVE-2021-23908

The CVE-2021-23908 vulnerability poses a risk of remote code execution due to the type confusion issue in MultiSvSetAttributes. Attackers exploiting this flaw could execute arbitrary code on vulnerable systems, potentially leading to a complete compromise of the affected devices.

Technical Details of CVE-2021-23908

Explore the specifics of the CVE-2021-23908 vulnerability, including the description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability arises from a type confusion problem in the MultiSvSetAttributes function of the HiQnet Protocol, present in the Headunit NTG6 of Mercedes-Benz vehicles. This flaw can be leveraged by threat actors to achieve remote code execution.

Affected Systems and Versions

Mercedes-Benz vehicles equipped with the MBUX Infotainment System and the Headunit NTG6 are susceptible to CVE-2021-23908. The vulnerability impacts all versions of these systems up to 2021.

Exploitation Mechanism

Attackers can exploit the type confusion issue in MultiSvSetAttributes via the HiQnet Protocol to trigger remote code execution on vulnerable Mercedes-Benz vehicles, posing a significant security risk.

Mitigation and Prevention

Learn how to address and prevent the CVE-2021-23908 vulnerability, minimizing the risk of exploitation and enhancing overall security.

Immediate Steps to Take

Owners of affected Mercedes-Benz vehicles should be vigilant and follow security best practices. Implementing security updates and patches from the manufacturer is crucial to mitigate the risk associated with CVE-2021-23908.

Long-Term Security Practices

Incorporating robust security measures, such as limiting network exposure and practicing defense-in-depth strategies, can help safeguard against potential threats like CVE-2021-23908. Regular security assessments and system updates are essential for maintaining the integrity of connected vehicles.

Patching and Updates

Mercedes-Benz has released security patches and updates to address the CVE-2021-23908 vulnerability. Owners should promptly install these patches to secure their vehicles against potential exploitation.