CVE-2016-0865 in SmartGrid LightHouse Sensor Management System
Summary
by MITRE
Tollgrade SmartGrid LightHouse Sensor Management System (SMS) Software EMS before 5.1, and 4.1.0 Build 16, allows remote authenticated users to change arbitrary passwords via unspecified vectors.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 07/25/2018
The Tollgrade SmartGrid LightHouse Sensor Management System represents a critical infrastructure component designed for managing smart grid sensor networks in industrial environments. This system serves as the central management platform for monitoring and controlling distributed sensor deployments across power grid infrastructure, making it a prime target for adversaries seeking to compromise critical infrastructure operations. The vulnerability exists within the Enterprise Management System component of the software, which handles authentication and access control functions for authorized personnel. The affected versions include EMS software prior to version 5.1 and specifically 4.1.0 Build 16, indicating this represents a long-standing flaw that persisted across multiple release cycles. The vulnerability stems from insufficient input validation and authorization controls within the password change functionality, allowing authenticated users to manipulate password settings for arbitrary accounts within the system.
The technical flaw manifests as an authorization bypass or privilege escalation vulnerability that enables authenticated users to modify passwords beyond their legitimate scope of access. This weakness falls under the CWE-284 access control vulnerability category, specifically representing improper access control where the system fails to properly verify that the authenticated user has sufficient privileges to perform the requested password modification action. The unspecified vectors suggest that the vulnerability could be exploited through multiple attack paths including API endpoints, web interfaces, or command line tools that interface with the management system. Attackers could leverage this flaw to escalate their privileges, gain access to administrative accounts, or lock out legitimate users from the system, potentially disrupting critical infrastructure operations. The vulnerability's remote nature means that attackers do not require physical access to the system, making it particularly dangerous in networked environments where the management system is accessible over the internet or corporate networks.
The operational impact of this vulnerability extends far beyond simple password manipulation, as it represents a fundamental compromise of the system's authentication and access control mechanisms. In critical infrastructure environments, such as power grid management systems, this vulnerability could enable attackers to gain unauthorized access to sensitive operational data, modify system configurations, or potentially disrupt grid operations. The ability to change arbitrary passwords creates a persistent threat vector that could allow attackers to maintain long-term access to the system while evading detection. According to ATT&CK framework, this vulnerability maps to T1078 valid accounts and T1531 account access removal, as it enables adversaries to maintain access through legitimate credentials while potentially removing or altering access controls for other users. The impact is particularly severe given that the system manages sensor networks that monitor critical power infrastructure, where unauthorized access could lead to operational disruptions, data breaches, or even physical safety risks.
Organizations implementing this software should immediately implement comprehensive mitigations including applying the latest security patches and updates from the vendor, implementing additional access controls, and conducting thorough security assessments of the management system. Network segmentation should be implemented to limit access to the management system to only authorized personnel, while multi-factor authentication should be deployed where possible to add additional layers of protection. The system should be configured with principle of least privilege access controls, ensuring that users can only modify passwords for accounts within their legitimate scope of responsibility. Regular monitoring of authentication logs and access attempts should be implemented to detect potential exploitation attempts, and security personnel should be trained to recognize signs of credential manipulation attacks. Additionally, organizations should consider implementing intrusion detection systems specifically configured to monitor for unusual password change patterns or unauthorized access attempts within the management system. The vulnerability demonstrates the critical importance of maintaining up-to-date security patches and implementing robust access control mechanisms in critical infrastructure environments where system integrity directly impacts operational safety and security.