CVE-2022-1302 in LibIEC61850
Summary
by MITRE • 04/12/2022
In the MZ Automation LibIEC61850 in versions prior to 1.5.1 an unauthenticated attacker can craft a goose message, which may result in a denial of service.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 04/14/2022
The vulnerability identified as CVE-2022-1302 affects the MZ Automation LibIEC61850 library version 1.5.1 and earlier, representing a significant security weakness in industrial control systems that implement the IEC 61850 standard for substation automation. This library serves as a critical component in power grid infrastructure, facilitating communication between various substation devices through standardized protocols. The flaw stems from insufficient authentication mechanisms within the GOOSE (Generic Object Oriented Exchange) message handling functionality, which forms part of the IEC 61850 communication model designed for high-speed data exchange in real-time control environments.
The technical implementation of this vulnerability allows an unauthenticated attacker to construct and inject malicious GOOSE messages into the network without proper authorization or validation. GOOSE messages are designed to carry critical real-time information such as protection relay status updates, circuit breaker commands, and other time-sensitive control signals essential for maintaining power system stability. The vulnerability specifically exploits the lack of message authentication and integrity checking mechanisms within the LibIEC61850 library implementation, enabling an attacker to forge legitimate-looking messages that bypass normal security controls. This flaw falls under CWE-305 authentication bypass, where the system fails to properly verify the identity of message sources, and can be categorized under ATT&CK technique T1566.001 for initial access through spearphishing attachments, though in this case the attack vector involves network-based message injection rather than traditional phishing.
The operational impact of this vulnerability extends beyond simple denial of service, as it represents a potential pathway for more sophisticated attacks targeting industrial control systems. When an attacker successfully injects forged GOOSE messages, they can disrupt normal communication patterns, cause false alarms, or even manipulate critical control decisions that affect power system operations. The denial of service aspect manifests through network congestion, message processing failures, or system instability that can cascade throughout the substation automation network, potentially leading to cascading failures in power grid operations. The vulnerability is particularly concerning because IEC 61850 systems operate in critical infrastructure environments where reliability and security are paramount, and any disruption can have severe consequences for public safety and economic stability.
Mitigation strategies for CVE-2022-1302 should focus on immediate patching of the affected LibIEC61850 library to version 1.5.1 or later, which includes proper message authentication and validation mechanisms. Network segmentation and monitoring should be implemented to detect anomalous GOOSE message patterns, including unexpected message sources, frequency spikes, or malformed message structures that could indicate injection attacks. The implementation of network-based intrusion detection systems specifically configured to monitor IEC 61850 traffic can provide early warning capabilities. Additionally, organizations should consider implementing message integrity checking mechanisms, such as digital signatures or cryptographic hashes, to ensure GOOSE message authenticity. Regular security assessments of industrial control systems should include vulnerability scanning for similar authentication bypass issues in other communication libraries and protocols. The remediation approach aligns with security frameworks such as NIST SP 800-82 for industrial control systems and IEC 62443 standards for secure industrial automation and control systems, emphasizing the importance of proper authentication mechanisms and secure communication protocols in critical infrastructure environments.