CVE-2018-8880 in Quantum BACnet Integration
Summary
by MITRE
Lutron Quantum BACnet Integration 2.0 (firmware 3.2.243) doesn't check for correct user authentication before showing the /deviceIP information, which leads to internal network information disclosure.
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Analysis
by VulDB Data Team • 09/05/2024
The vulnerability identified as CVE-2018-8880 affects Lutron Quantum BACnet Integration devices running firmware version 3.2.243, representing a critical security flaw in building automation and control systems. This issue stems from insufficient authentication mechanisms within the device's web interface, specifically when accessing the /deviceIP endpoint. The flaw allows unauthorized users to obtain sensitive internal network information without proper credentials, creating a significant risk for industrial control systems and building management environments. The vulnerability exposes device configuration details that could be leveraged by attackers to map network topology and identify potential attack vectors within the facility's infrastructure.
The technical implementation of this vulnerability demonstrates a clear failure in access control mechanisms, classified under CWE-284 Access Control. The device's web server fails to enforce proper authentication checks before serving the deviceIP information, which typically contains network configuration parameters such as IP addresses, subnet masks, and gateway information. This weakness exists at the application layer where the web interface does not validate user credentials or session tokens before granting access to sensitive endpoints. The flaw represents a classic example of insecure direct object reference vulnerability where the system exposes internal resources without adequate authorization checks, making it particularly dangerous in environments where physical security and network segmentation are critical considerations.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with crucial network mapping data that can be used for subsequent exploitation attempts. An attacker who gains access to this information can perform network reconnaissance to identify other connected devices, determine network topology, and potentially discover additional vulnerabilities within the building automation system. This information disclosure can facilitate more sophisticated attacks such as lateral movement within the network, integration with other systems, or targeted exploitation of connected devices. The vulnerability is particularly concerning in industrial environments where building automation systems often operate with minimal network segmentation and where physical access to control systems may be limited.
Security professionals should implement immediate mitigations including network segmentation to isolate building automation systems from general corporate networks, implementing proper access controls on web interfaces, and applying firmware updates when available. The vulnerability aligns with ATT&CK technique T1046 Network Service Scanning and T1082 System Information Discovery, as it enables adversaries to gather network configuration information without requiring elevated privileges. Organizations should conduct thorough network audits to identify all affected devices and ensure that authentication mechanisms are properly enforced across all web-accessible endpoints. Regular security assessments of industrial control systems are essential to identify similar authentication bypass vulnerabilities that could compromise operational technology environments. The incident highlights the importance of applying security best practices to industrial control systems, which often receive less attention than traditional IT infrastructure despite their critical role in facility operations.