CVE-2022-24595 in Automotive Grade Linux
Summary
by MITRE • 03/18/2022
Automotive Grade Linux Kooky Koi 11.0.0, 11.0.1, 11.0.2, 11.0.3, 11.0.4, and 11.0.5 is affected by Incorrect Access Control in usr/bin/afb-daemon. To exploit the vulnerability, an attacker should send a well-crafted HTTP (or WebSocket) request to the socket listened by the afb-daemon process. No credentials nor user interactions are required.
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Analysis
by VulDB Data Team • 03/20/2022
The vulnerability identified as CVE-2022-24595 affects Automotive Grade Linux Kooky Koi versions 11.0.0 through 11.0.5, specifically targeting the afb-daemon component within the system. This represents a critical access control flaw that undermines the security posture of automotive infotainment and connectivity systems. The affected daemon serves as a core component in the Automotive Function Broker architecture, responsible for managing application interfaces and service communications within the automotive environment. The vulnerability resides in the usr/bin/afb-daemon executable which operates as a privileged service listening on network sockets for incoming HTTP or WebSocket connections. The flaw stems from inadequate authentication and authorization checks that allow arbitrary remote attackers to bypass normal access controls and execute unauthorized operations against the daemon.
The technical implementation of this vulnerability manifests through improper input validation and access control enforcement within the afb-daemon process. When the daemon receives crafted HTTP or WebSocket requests, it fails to properly authenticate incoming connections or verify the privileges of requesting entities. This allows an attacker to send maliciously constructed requests that exploit the lack of proper access control mechanisms. The vulnerability operates at the application layer and does not require any form of authentication credentials or user interaction to exploit, making it particularly dangerous in automotive environments where systems may be exposed to untrusted network traffic. The attack vector specifically targets the socket listening interface where the daemon processes incoming requests, enabling remote code execution or unauthorized access to system functions.
The operational impact of this vulnerability extends beyond typical network security concerns into the critical automotive domain where system integrity and safety are paramount. An attacker who successfully exploits this vulnerability could potentially gain unauthorized access to vehicle functions, manipulate infotainment systems, or even interfere with critical vehicle operations. The lack of authentication requirements means that any device with network access to the affected system could exploit this flaw, potentially compromising vehicle security and user privacy. This vulnerability directly violates the principle of least privilege and demonstrates a failure in implementing proper access control mechanisms that are essential for automotive cybersecurity frameworks. The implications are particularly severe given that Automotive Grade Linux systems are designed to support critical vehicle functions and often integrate with vehicle networks and safety systems.
Organizations affected by this vulnerability should implement immediate mitigations including network segmentation to isolate affected systems, firewall rules to restrict access to the daemon's listening ports, and deployment of intrusion detection systems to monitor for exploitation attempts. The recommended approach involves applying vendor patches or updates as soon as they become available, while also implementing network monitoring to detect unauthorized access attempts. System administrators should disable unnecessary services and ensure that only trusted networks can access the affected daemon ports. Additionally, the vulnerability highlights the importance of proper security testing and code review processes in automotive software development, aligning with industry standards such as ISO/SAE 21434 for cybersecurity risk management. The flaw demonstrates the critical need for implementing robust access control mechanisms and adhering to security best practices throughout the software development lifecycle, particularly in safety-critical automotive applications where the consequences of security breaches can be severe and potentially life-threatening.