CVE-2018-12594 in MACH-ProWebCom
Summary
by MITRE
Reliable Controls MACH-ProWebCom 7.80 devices allow remote attackers to obtain sensitive information via a direct request for the data/fileinfo.xml or job/job.json file, as demonstrated the Master Password field.
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Analysis
by VulDB Data Team • 06/03/2026
The vulnerability identified as CVE-2018-12594 affects Reliable Controls MACH-ProWebCom 7.80 devices, representing a critical information disclosure flaw that exposes sensitive operational data to remote attackers. This vulnerability resides within the web-based management interface of industrial control systems, specifically targeting the device's file access mechanisms that fail to implement proper authentication and authorization controls. The flaw allows unauthenticated remote attackers to directly access sensitive configuration files through predictable URI paths, bypassing normal security controls that should protect system administration data.
The technical implementation of this vulnerability stems from inadequate input validation and access control mechanisms within the web server component of the MACH-ProWebCom device. Attackers can exploit this weakness by directly requesting specific files such as data/fileinfo.xml or job/job.json without requiring any authentication credentials. The exposure of these files reveals critical system information including administrative credentials, device configuration parameters, and operational data that should remain protected within enterprise environments. The Master Password field mentioned in the demonstration serves as a prime example of how sensitive authentication data can be extracted through this method, potentially enabling attackers to gain full administrative control over the affected devices.
The operational impact of this vulnerability extends beyond simple information disclosure, creating significant risks for industrial control systems and operational technology environments. Organizations utilizing these devices face potential compromise of their entire control infrastructure, as the extracted credentials could enable attackers to manipulate device configurations, access production data, or even disrupt critical operations. This vulnerability aligns with CWE-200, which describes improper exposure of sensitive information, and represents a direct violation of security principles that should prevent unauthorized access to system administration interfaces. The attack vector is particularly concerning because it requires no specialized tools or complex exploitation techniques, making it accessible to threat actors with basic web browsing capabilities.
From a cybersecurity maturity perspective, this vulnerability demonstrates the critical importance of implementing proper access controls and input validation in industrial control systems. The flaw enables a classic privilege escalation attack pattern that can be classified under the ATT&CK technique T1078 for valid accounts and T1566 for credential access. Organizations should immediately implement network segmentation to isolate these devices from general network access and ensure that administrative interfaces are not exposed to untrusted networks. The vulnerability also highlights the need for regular security assessments of operational technology systems, as many industrial environments lack proper security monitoring and access control mechanisms that would detect such unauthorized file access attempts.
Mitigation strategies for CVE-2018-12594 should include immediate patching of affected devices through vendor-provided updates, implementation of network access controls to restrict access to administrative interfaces, and deployment of network monitoring solutions to detect unauthorized file access attempts. Organizations should also conduct comprehensive inventory assessments to identify all instances of affected devices and ensure that administrative interfaces are properly secured using strong authentication mechanisms. The vulnerability serves as a reminder that industrial control systems require the same security rigor as traditional IT systems, with proper access controls, regular security assessments, and incident response procedures to protect against information disclosure attacks that could compromise operational integrity and safety.