CVE-2023-28898 : Security Advisory and Response

An overview of the vulnerability identified by CVE-2023-28898 which allows an attacker connected to the in-vehicle Wi-Fi network to cause denial-of-service of the infotainment system.

Understanding CVE-2023-28898

This CVE pertains to a vulnerability discovered in the Real-Time Streaming Protocol implementation in the MIB3 infotainment unit, specifically affecting the handling of requests to the /logs URI under certain conditions. The issue enables an attacker on the in-vehicle Wi-Fi network to trigger a denial-of-service of the infotainment system.

What is CVE-2023-28898?

The Real-Time Streaming Protocol implementation in the MIB3 infotainment unit improperly processes requests to the /logs URI when the id parameter is set to zero. This security flaw allows an attacker within the in-vehicle Wi-Fi network to disrupt the normal functioning of the infotainment system, subject to specific prerequisites.

The Impact of CVE-2023-28898

The vulnerability identified in CVE-2023-28898, labeled as CAPEC-6 Argument Injection, poses a medium severity risk. Exploitation of this vulnerability could lead to a denial-of-service (DoS) scenario targeted at the infotainment system, potentially disrupting its availability.

Technical Details of CVE-2023-28898

Insights into the vulnerability's description, affected systems and versions, as well as the mechanism of exploitation.

Vulnerability Description

The flaw lies in the Real-Time Streaming Protocol implementation in the MIB3 infotainment, particularly in how requests to the /logs URI with a zero id parameter are managed. This oversight can be exploited by an attacker via the in-vehicle Wi-Fi network to induce a denial-of-service condition on the infotainment system.

Affected Systems and Versions

The affected product is the MIB3 Infotainment Unit provided by PREH GMBH. The specific vulnerable version is defined as 0, with a version type of custom, and versions less than or equal to 0304 are impacted.

Exploitation Mechanism

To trigger the denial-of-service attack, an attacker must be connected to the in-vehicle Wi-Fi network and meet certain criteria related to the id parameter value within the /logs URI requests.

Mitigation and Prevention

Effective strategies to address and mitigate the risks posed by CVE-2023-28898, encompassing immediate steps to take, long-term security practices, and the importance of patching and updates.

Immediate Steps to Take

Immediate measures should include assessing network security configurations, restricting unauthorized access to the in-vehicle Wi-Fi network, and implementing additional controls to monitor and detect anomalous activities.

Long-Term Security Practices

Long-term security measures should involve regular security audits, conducting penetration testing, educating users on safe practices, and ensuring timely updates and patches are applied to the infotainment system.

Patching and Updates

It is crucial for vendors to release patches addressing this vulnerability promptly. End-users should diligently apply these patches to ensure their systems are safeguarded against potential exploits.