CVE-2021-23909 : Exploit Details and Defense Strategies
Learn about CVE-2021-23909, a vulnerability in HERMES 2.1 in the MBUX Infotainment System on Mercedes-Benz vehicles allowing remote code execution. Find out its impact, technical details, and mitigation.
An issue was discovered in HERMES 2.1 in the MBUX Infotainment System on Mercedes-Benz vehicles through 2021. The SH2 MCU allows remote code execution.
Understanding CVE-2021-23909
This section will cover what CVE-2021-23909 is and its impact, technical details, as well as mitigation and prevention strategies.
What is CVE-2021-23909?
CVE-2021-23909 refers to a vulnerability found in the MBUX Infotainment System in Mercedes-Benz vehicles. The flaw in the SH2 MCU allows attackers to execute code remotely.
The Impact of CVE-2021-23909
The vulnerability poses a medium severity risk with a CVSS base score of 6.3. It has a high impact on availability and integrity, requiring high-level privileges and no user interaction for exploitation.
Technical Details of CVE-2021-23909
Let's delve into the vulnerability description, affected systems and versions, as well as the exploitation mechanism.
Vulnerability Description
The vulnerability allows threat actors to execute arbitrary code remotely through the SH2 MCU in the MBUX Infotainment System.
Affected Systems and Versions
The issue affects HERMES 2.1 in the MBUX Infotainment System on all Mercedes-Benz vehicles through the year 2021.
Exploitation Mechanism
Attackers can exploit this vulnerability locally, with low attack complexity, and high availability and integrity impact.
Mitigation and Prevention
Discover the immediate steps to take, long-term security practices, and the importance of patching and updates.
Immediate Steps to Take
Users are advised to implement security patches provided by the manufacturer, restrict network access to vulnerable systems, and monitor for any suspicious activity.
Long-Term Security Practices
To enhance overall security, it is recommended to conduct regular security assessments, educate users on secure practices, and keep all software and systems up to date.
Patching and Updates
Regularly check for updates from Mercedes-Benz, apply patches promptly, and stay informed about any new security advisories.