CVE-2022-43722 in SICAM PAS
Summary
by MITRE • 12/13/2022
A vulnerability has been identified in SICAM PAS/PQS (All versions < V7.0). Affected software does not properly secure a folder containing library files. This could allow an attacker to place a custom malicious DLL in this folder which is then run with SYSTEM rights when a service is started that requires this DLL. At the time of assigning the CVE, the affected firmware version of the component has already been superseded by succeeding mainline versions.
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Analysis
by VulDB Data Team • 01/08/2023
The vulnerability identified as CVE-2022-43722 affects SICAM PAS/PQS software versions prior to V7.0, representing a critical security flaw in industrial control systems that has significant implications for operational technology environments. This vulnerability stems from inadequate directory permissions and access controls within the software's installation structure, specifically targeting a folder containing essential library files that are dynamically loaded during service execution. The affected system architecture demonstrates poor privilege separation and security hardening practices that are fundamental to protecting industrial control systems from malicious code injection attacks.
The technical flaw manifests as a path traversal and privilege escalation vulnerability where the software fails to properly secure a designated folder containing dynamic link library files. When a service is initiated that requires these library files, the system loads and executes any DLL present in this unprotected directory with elevated SYSTEM privileges. This creates a persistent code execution vector that allows attackers to establish malicious presence within the system without requiring additional exploitation techniques. The vulnerability directly maps to CWE-276, which describes inadequate privilege management in software systems, and represents a classic example of insecure direct object reference in industrial control environments where system integrity is paramount.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with persistent access to critical industrial control systems with the highest level of system privileges. Once a malicious DLL is placed in the vulnerable folder, it will execute automatically whenever the associated service starts, potentially allowing for data exfiltration, system compromise, or disruption of critical operations. This vulnerability is particularly concerning in industrial environments where SICAM PAS/PQS systems are used for process automation and control, as it could enable attackers to manipulate industrial processes, access sensitive operational data, or create backdoor access for future exploitation. The attack surface is further expanded by the fact that the vulnerability affects multiple versions of the software, indicating a systemic security flaw rather than an isolated incident.
Organizations affected by this vulnerability should immediately implement mitigations including restricting write permissions to the vulnerable folder, implementing mandatory access controls, and conducting thorough security audits of all industrial control system components. The recommended approach involves establishing proper privilege separation between system services and library directories, implementing file integrity monitoring solutions, and ensuring that only authorized personnel can modify system libraries. Security controls should also include regular vulnerability assessments and patch management procedures that align with NIST SP 800-82 guidelines for industrial control systems. Additionally, network segmentation and monitoring solutions should be deployed to detect unauthorized file modifications in critical system directories, as this vulnerability represents a classic attack vector that could be exploited by both external adversaries and insider threats. The vulnerability serves as a reminder of the critical importance of secure software development practices in industrial environments where security failures can have cascading effects on operational technology infrastructure and potentially compromise physical safety systems.