CVE-2020-8489 in System 800xA Information Management
Summary
by MITRE
Insufficient protection of the inter-process communication functions in ABB System 800xA Information Management (all published versions) enables an attacker authenticated on the local system to inject data, affecting the runtime values to be stored in the archive, or making Information Management history services unavailable.
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Analysis
by VulDB Data Team • 06/04/2024
The vulnerability identified as CVE-2020-8489 represents a critical weakness in ABB System 800xA Information Management software where insufficient protection mechanisms exist for inter-process communication functions. This security flaw affects all published versions of the system and creates a significant attack surface for local authenticated adversaries who can exploit the inadequate safeguards to manipulate system operations. The vulnerability specifically targets the information management components that handle data archival processes and historical service operations, making it particularly dangerous for industrial control systems where data integrity and availability are paramount.
The technical flaw manifests through inadequate validation and protection of communication channels between different processes within the ABB 800xA system architecture. When an attacker gains local system authentication, they can leverage this weakness to inject malicious data into the system's communication pathways, potentially corrupting the runtime values that are destined for archival storage. This injection capability extends to making the history services unavailable, effectively creating a denial of service condition that can disrupt critical operational workflows. The vulnerability resides in the fundamental design of how the system handles inter-process communication, where proper access controls and data validation mechanisms are missing or insufficiently implemented.
The operational impact of this vulnerability is substantial for organizations relying on ABB 800xA systems for industrial automation and control. Attackers can manipulate historical data archives which may contain critical operational parameters, sensor readings, or process variables that are essential for system monitoring, compliance reporting, and operational decision-making. The ability to make history services unavailable creates additional operational disruption, potentially leading to system downtime, loss of operational visibility, and compromised process control. This vulnerability directly affects the integrity and availability of industrial control system data, which can have cascading effects on production processes and safety operations. The attack vector requires only local system authentication, making it particularly concerning as it can be exploited by malicious insiders or compromised local accounts.
Organizations should implement immediate mitigations including strengthening local system authentication controls, implementing proper access controls for inter-process communication, and conducting thorough security assessments of their ABB 800xA systems. Network segmentation and monitoring of inter-process communication patterns can help detect anomalous activities. The vulnerability aligns with CWE-284 which addresses inadequate access control, and relates to ATT&CK techniques involving privilege escalation and data manipulation. Regular security updates and patches from ABB should be implemented immediately, while system administrators should review and harden local system access controls to minimize the risk of unauthorized local access. Additionally, implementing robust logging and monitoring solutions for process communication activities can provide early detection of exploitation attempts.