CVE-2024-8684 in Revolution Pi
Summary
by MITRE • 02/10/2025
OS Command Injection vulnerability in Revolution Pi version 2022-07-28-revpi-buster from KUNBUS GmbH. This vulnerability could allow an authenticated attacker to execute OS commands on the device via the ‘php/dal.php’ endpoint, in the ‘arrSaveConfig’ parameter.
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Analysis
by VulDB Data Team • 02/10/2025
The CVE-2024-8684 vulnerability represents a critical operating system command injection flaw discovered in the Revolution Pi system version 2022-07-28-revpi-buster developed by KUNBUS GmbH. This vulnerability exists within the web-based management interface of the industrial automation platform, specifically targeting the php/dal.php endpoint. The flaw allows authenticated attackers to execute arbitrary operating system commands on the affected device by manipulating the arrSaveConfig parameter, which is typically used for configuration data handling within the system's data access layer. The vulnerability stems from insufficient input validation and sanitization mechanisms that fail to properly filter user-supplied data before processing it within the system's command execution contexts.
This vulnerability operates under the Common Weakness Enumeration framework as CWE-77, which specifically addresses command injection flaws where untrusted data is incorporated into system commands without proper sanitization. The attack vector leverages the authenticated access requirement, meaning that an attacker must first establish legitimate credentials to the system before exploiting this vulnerability. However, the impact remains severe since the compromised system operates in industrial environments where unauthorized command execution can lead to significant operational disruptions. The affected php/dal.php endpoint serves as a critical data processing interface that handles configuration saving operations, making it a prime target for exploitation. The arrSaveConfig parameter, when improperly validated, becomes a conduit for malicious command injection attempts that bypass normal system security controls.
The operational impact of CVE-2024-8684 extends beyond simple unauthorized command execution, particularly within industrial control systems where the Revolution Pi platform operates. An attacker could potentially gain full system control, modify critical configuration parameters, access sensitive operational data, or even disrupt industrial processes by executing destructive commands. The vulnerability affects the integrity and availability of industrial automation systems, which may have cascading effects on production operations and safety mechanisms. Given that industrial control systems often operate in closed environments with limited network segmentation, successful exploitation could enable lateral movement within the industrial network. The attack could also facilitate persistence mechanisms, allowing the attacker to maintain long-term access to the compromised system and potentially escalate privileges to gain administrative control over the entire automation infrastructure.
Mitigation strategies for CVE-2024-8684 should prioritize immediate patching of the affected Revolution Pi systems through the vendor-provided security updates. Organizations should implement network segmentation to limit access to the affected systems and restrict the authentication scope to authorized personnel only. The principle of least privilege must be enforced by ensuring that only necessary users have access to the php/dal.php endpoint and configuration management functions. Input validation mechanisms should be strengthened to properly sanitize all user-supplied data before processing, implementing proper escaping and encoding techniques to prevent command injection attempts. Network monitoring solutions should be deployed to detect anomalous command execution patterns that might indicate exploitation attempts. Additionally, regular security assessments and penetration testing should be conducted to identify potential vulnerabilities in industrial control system interfaces, with particular attention to web-based management portals. The vulnerability also highlights the importance of secure coding practices in industrial software development, emphasizing the need for comprehensive input validation and output encoding mechanisms. Organizations should consider implementing intrusion detection systems specifically designed for industrial environments to monitor for suspicious activities that could indicate exploitation attempts.