CVE-2023-2003 in Vision1210
Summary
by MITRE • 07/13/2023
Embedded malicious code vulnerability in Vision1210, in the build 5 of operating system version 4.3, which could allow a remote attacker to store base64-encoded malicious code in the device's data tables via the PCOM protocol, which can then be retrieved by a client and executed on the device.
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Analysis
by VulDB Data Team • 08/05/2023
The vulnerability identified as CVE-2023-2003 represents a critical security flaw in the Vision1210 device firmware, specifically within build 5 of operating system version 4.3. This embedded malicious code vulnerability stems from insufficient input validation and sanitization mechanisms within the PCOM protocol implementation, which serves as the primary communication interface for device management and data exchange. The vulnerability creates a persistent threat vector that allows remote attackers to inject malicious payloads directly into the device's data tables through legitimate communication channels, effectively bypassing traditional network security controls and device authentication mechanisms.
The technical exploitation of this vulnerability occurs through the PCOM protocol's handling of data inputs, where base64-encoded malicious code can be stored in the device's internal data tables without proper validation or sanitization. This flaw falls under CWE-77: Improper Neutralization of Special Elements used in a Command, which specifically addresses the failure to properly neutralize special elements that could be interpreted as commands or code during processing. The vulnerability enables attackers to leverage the protocol's legitimate data storage functions as a delivery mechanism for malicious payloads, creating a sophisticated attack vector that can persist across device reboots and system updates.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with persistent access to the device's core functionality and potentially broader network access points. Once the malicious code is stored in the data tables, it can be retrieved and executed by legitimate client applications, creating a stealthy attack method that avoids detection by standard security monitoring systems. This vulnerability aligns with ATT&CK technique T1566.001: Phishing for Information, as it enables attackers to establish persistent backdoors through legitimate communication protocols, and T1059.001: Command and Scripting Interpreter, as it allows for command execution through the device's own processing mechanisms.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term security posture improvements. Device manufacturers should implement comprehensive input validation and sanitization controls within the PCOM protocol implementation, ensuring all data received through this interface undergoes strict verification before being stored in internal data tables. Network segmentation and access controls should be strengthened to limit the exposure of vulnerable devices to untrusted networks, while regular firmware updates and security patches should be deployed to address the root cause of the vulnerability. Additionally, security monitoring systems should be enhanced to detect anomalous data storage patterns within device tables that could indicate malicious code injection attempts, providing defense-in-depth measures against this specific threat vector.