CVE-2018-7244 in 66074 MGE Network Management Card
Summary
by MITRE
An information disclosure vulnerability exists In Schneider Electric's 66074 MGE Network Management Card Transverse installed in MGE UPS and MGE STS. The integrated web server (Port 80/443/TCP) of the affected devices could allow a remote attacker to obtain sensitive device information if network access was obtained.
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Analysis
by VulDB Data Team • 01/27/2020
The CVE-2018-7244 vulnerability represents a critical information disclosure flaw within Schneider Electric's MGE Network Management Card Transverse software implementation. This vulnerability specifically affects devices running the 66074 MGE Network Management Card firmware, which is integrated into MGE UPS and MGE STS series products. The affected devices operate an integrated web server on standard network ports 80 and 443, creating an attack surface that exposes sensitive operational data to remote threat actors. The vulnerability stems from insufficient access controls and improper authentication mechanisms within the web interface implementation, allowing unauthenticated users to access device configuration details and operational parameters.
This information disclosure vulnerability falls under CWE-200, which specifically addresses "Information Exposure" and aligns with ATT&CK technique T1082 for system information discovery. The flaw enables remote attackers to obtain sensitive device information including but not limited to device model numbers, firmware versions, network configuration parameters, and potentially administrative credentials. The vulnerability's severity is amplified by the fact that it operates over standard TCP ports, making it easily discoverable through network scanning activities. The integrated web server functionality creates a persistent attack vector that remains active as long as the device is operational and accessible over the network.
The operational impact of this vulnerability extends beyond simple information gathering, as it provides attackers with comprehensive insights into the target environment's infrastructure. Once sensitive information is obtained, threat actors can leverage this intelligence for subsequent attacks including targeted exploitation of known vulnerabilities, social engineering campaigns, or network reconnaissance activities. The affected MGE UPS and MGE STS devices typically serve critical power management functions within enterprise environments, making them attractive targets for attackers seeking to disrupt operations or gain further access to network resources. The vulnerability essentially provides a roadmap for attackers to understand device capabilities and potential weaknesses within the power infrastructure.
Mitigation strategies for CVE-2018-7244 should prioritize immediate network segmentation and access control implementation to restrict unauthorized access to affected devices. Organizations should deploy network access control lists to block external access to TCP ports 80 and 443 on affected devices, while implementing strong authentication mechanisms for legitimate administrative access. The recommended approach includes updating to the latest firmware releases provided by Schneider Electric that address the information disclosure vulnerability, conducting comprehensive network scanning to identify all affected devices, and implementing continuous monitoring for unauthorized access attempts. Additionally, network administrators should establish regular security audits to verify proper configuration of network management interfaces and ensure that sensitive information is not exposed through web-based management systems. The vulnerability demonstrates the critical importance of secure configuration management and proper network access controls in industrial control systems environments.