CVE-2013-0673 in MatrikonOPC A
Summary
by MITRE
Directory traversal vulnerability in the web interface in the Health Monitor service in MatrikonOPC A&E Historian 1.0.0.0 allows remote attackers to read and delete arbitrary files via a crafted URL.
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Analysis
by VulDB Data Team • 02/11/2018
The CVE-2013-0673 vulnerability represents a critical directory traversal flaw within the Health Monitor service of MatrikonOPC A&E Historian version 1.0.0.0, exposing the system to remote exploitation through its web interface. This vulnerability falls under the category of CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks. The flaw enables malicious actors to manipulate URL parameters to access files outside the intended directory structure, potentially compromising the integrity and confidentiality of the system's data. The vulnerability specifically affects the web-based monitoring interface that administrators use to oversee the historian service, making it a prime target for attackers seeking unauthorized access to sensitive operational data.
The technical implementation of this vulnerability stems from inadequate input validation within the web service's parameter handling mechanism. When users submit requests through the Health Monitor interface, the application fails to properly sanitize or validate the URL parameters that specify file paths. Attackers can exploit this weakness by crafting malicious URLs containing sequences such as "../" or similar path manipulation techniques that allow them to navigate beyond the intended directory boundaries. The service processes these malformed requests without sufficient authorization checks or path validation, enabling attackers to read arbitrary files from the system's file structure or even delete critical components. This flaw particularly impacts systems where the historian service operates with elevated privileges, as it could potentially allow attackers to access configuration files, log data, or other sensitive resources that contain operational intelligence.
The operational impact of this vulnerability extends beyond simple unauthorized file access, as it creates potential for significant disruption to industrial control systems and operational technology environments. Organizations using MatrikonOPC A&E Historian in manufacturing, process control, or other critical infrastructure settings face risks of data exfiltration, system compromise, and operational disruption. The ability to delete arbitrary files could lead to complete system failure or data corruption, particularly if critical system components or historical data files are targeted. From an attacker perspective, this vulnerability aligns with ATT&CK technique T1083 (File and Directory Discovery) and T1105 (Ingress Tool Transfer), as it enables reconnaissance activities and potential lateral movement within the network. The remote nature of the attack means that adversaries can exploit this vulnerability from outside the network perimeter, potentially bypassing traditional network security controls.
Mitigation strategies for CVE-2013-0673 should focus on immediate patching of the affected MatrikonOPC A&E Historian version, as this represents the most effective defense against the vulnerability. Organizations should implement network segmentation to isolate the historian service from general network traffic and restrict access to the Health Monitor interface to authorized personnel only. Input validation controls should be strengthened at the application level to ensure all URL parameters are properly sanitized and validated before processing. Security monitoring should include detection of suspicious URL patterns and unusual file access patterns that may indicate exploitation attempts. Additionally, implementing web application firewalls and intrusion prevention systems can help detect and block malicious directory traversal attempts. The vulnerability highlights the importance of proper access controls and input validation in industrial control systems, aligning with cybersecurity frameworks such as NIST SP 800-82 and IEC 62443 standards that emphasize secure configuration and protection of operational technology environments. Regular vulnerability assessments and penetration testing should be conducted to identify similar weaknesses in other operational technology components within the organization's infrastructure.