CVE-2025-8474 in iLX-507
Summary
by MITRE • 08/01/2025
Alpine iLX-507 CarPlay Stack-based Buffer Overflow Code Execution Vulnerability. This vulnerability allows physically present attackers to execute arbitrary code on affected installations of Alpine iLX-507 devices. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the implementation of the Apple CarPlay protocol. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-26318.
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Analysis
by VulDB Data Team • 08/05/2025
The CVE-2025-8474 vulnerability represents a critical stack-based buffer overflow flaw in the Alpine iLX-507 CarPlay implementation that fundamentally compromises the security posture of automotive infotainment systems. This vulnerability resides within the Apple CarPlay protocol stack and demonstrates how embedded automotive systems can become entry points for sophisticated attacks. The flaw specifically manifests when the system processes user-supplied data without adequate length validation before copying it into a fixed-size stack buffer, creating an exploitable condition that can be leveraged for privilege escalation. The vulnerability's severity is amplified by its requirement for physical presence only, eliminating the need for network-based attack vectors and making it particularly dangerous in automotive environments where physical access is often achievable.
This buffer overflow vulnerability directly maps to CWE-121 Stack-based Buffer Overflow, which is categorized under the Common Weakness Enumeration framework as a fundamental flaw in memory management practices. The technical implementation flaw occurs during the CarPlay protocol handling phase where input validation mechanisms fail to properly check the boundaries of user-provided data before memory operations. When an attacker supplies maliciously crafted input that exceeds the predetermined buffer size, the overflow corrupts adjacent memory locations including return addresses and control data. The vulnerability's exploitation path leads to arbitrary code execution with root privileges, effectively providing attackers with complete system control. This type of vulnerability is particularly concerning in automotive contexts because it can potentially enable attackers to compromise vehicle safety systems, access personal data, or execute unauthorized commands.
The operational impact of this vulnerability extends beyond traditional cybersecurity concerns into automotive safety and privacy domains. Attackers with physical access to the Alpine iLX-507 device can exploit this vulnerability to gain root-level access, potentially enabling them to install malicious firmware, extract sensitive information from the vehicle's network, or manipulate critical vehicle functions. The absence of authentication requirements for exploitation means that anyone with physical access to the device can potentially compromise it, making this vulnerability particularly dangerous in commercial or public settings. The attack surface is further expanded by the fact that CarPlay implementations often have direct access to vehicle networks and can communicate with other electronic control units, creating potential pathways for lateral movement within the vehicle's electronic architecture. This vulnerability demonstrates the critical need for robust input validation and memory safety practices in automotive embedded systems, as highlighted by the ATT&CK framework's emphasis on privilege escalation techniques and the exploitation of memory corruption vulnerabilities.
Mitigation strategies for this vulnerability must address both immediate defensive measures and long-term architectural improvements. Organizations should implement firmware updates and patches from Alpine to address the specific buffer overflow condition in the CarPlay implementation, while also considering network segmentation and access controls to limit physical access to automotive systems. The vulnerability underscores the importance of applying the principle of least privilege and input validation in automotive software development, with specific attention to memory management practices and the implementation of bounds checking mechanisms. Security monitoring should include detection of anomalous CarPlay protocol behavior and unexpected system access patterns, while regular security assessments of automotive infotainment systems should be conducted to identify similar vulnerabilities. Additionally, automotive manufacturers and suppliers should adopt secure coding practices aligned with industry standards such as MISRA C and ISO 26262, which specifically address safety-critical software development in automotive applications. The vulnerability serves as a reminder that automotive cybersecurity must evolve beyond traditional network security approaches to include comprehensive protection of embedded systems and their interfaces with vehicle networks.