CVE-2018-12921 in GaugeTech Nexus
Summary
by MITRE
Electro Industries GaugeTech Nexus devices allow remote attackers to obtain potentially sensitive information via a direct request for the meter_information.htm, diag_system.htm, or diag_dnp_lan_wan.htm URI.
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Analysis
by VulDB Data Team • 02/23/2020
The vulnerability identified as CVE-2018-12921 affects Electro Industries GaugeTech Nexus devices, which are industrial metering and monitoring systems commonly deployed in utility and industrial environments. These devices are designed to collect and transmit critical operational data from electrical meters to centralized monitoring systems, making them attractive targets for adversaries seeking to gain unauthorized access to sensitive operational information. The vulnerability stems from insufficient access controls and improper authentication mechanisms within the device's web interface, allowing unauthenticated remote attackers to directly access sensitive configuration and diagnostic pages without requiring valid credentials.
This weakness represents a classic example of improper access control as classified under CWE-284, where the system fails to properly enforce authorization for accessing protected resources. The affected URIs meter_information.htm, diag_system.htm, and diag_dnp_lan_wan.htm contain potentially sensitive data including system configuration details, network parameters, operational status information, and diagnostic data that could reveal critical infrastructure details. The vulnerability exists because the web server component of these devices does not adequately validate incoming requests or enforce proper authentication before serving content from these specific endpoints, creating an information disclosure vulnerability that can be exploited remotely.
The operational impact of this vulnerability extends beyond simple information disclosure, as the exposed data could provide attackers with valuable insights for conducting more sophisticated attacks against the industrial control systems. The diagnostic information accessible through these endpoints may include network configuration details, system identifiers, firmware versions, and operational parameters that could be leveraged for privilege escalation, lateral movement, or targeted attacks against the broader industrial network infrastructure. This vulnerability aligns with ATT&CK technique T1082 (System Information Discovery) and T1046 (Network Service Scanning) as attackers could use the exposed information to map the target environment and identify potential attack vectors.
Organizations should implement immediate mitigations including network segmentation to isolate these devices from general network access, deployment of network access control policies to restrict access to only authorized personnel, and application of firmware updates provided by Electro Industries GaugeTech to address the authentication bypass vulnerability. Additionally, network monitoring should be enhanced to detect and alert on suspicious access attempts to these specific URI endpoints, and regular security assessments should be conducted to identify similar access control weaknesses in other industrial control system components. The vulnerability demonstrates the critical importance of implementing defense-in-depth strategies for industrial environments where information disclosure can lead to cascading security incidents affecting critical infrastructure operations.