CVE-2016-8344 in Experion Process Knowledge System
Summary
by MITRE
An issue was discovered in Honeywell Experion Process Knowledge System (PKS) platform: Experion PKS, Release 3xx and prior, Experion PKS, Release 400, Experion PKS, Release 410, Experion PKS, Release 430, and Experion PKS, Release 431. Experion PKS does not properly validate input. By sending a specially crafted packet, an attacker could cause the process to terminate. A successful exploit would prevent firmware uploads to the Series-C devices.
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Analysis
by VulDB Data Team • 02/14/2017
The vulnerability identified as CVE-2016-8344 affects the Honeywell Experion Process Knowledge System platform, specifically targeting releases 3xx and earlier, as well as versions 400, 410, 430, and 431. This issue represents a critical input validation flaw that undermines the integrity and availability of industrial control systems. The Experion PKS platform serves as a foundational component for process control and automation in critical infrastructure environments, making this vulnerability particularly concerning from a cybersecurity perspective. The affected system operates within operational technology environments where reliability and continuous operation are paramount for industrial processes.
The technical flaw manifests through inadequate input validation mechanisms within the Experion PKS platform's communication protocols. When the system receives specially crafted packets, it fails to properly validate the incoming data before processing it, leading to a potential denial of service condition. This vulnerability falls under the CWE-20 category of "Improper Input Validation," which is a fundamental weakness in software design that allows malicious inputs to disrupt normal system operations. The flaw essentially creates a pathway for attackers to inject malformed data that causes the targeted process to crash or terminate unexpectedly, effectively creating a denial of service condition that impacts the overall system functionality.
The operational impact of this vulnerability extends beyond simple service disruption to potentially compromise the integrity of industrial control processes. When firmware uploads to Series-C devices are prevented due to process termination, operators face significant challenges in maintaining system updates, security patches, and operational configurations. This limitation can create cascading effects throughout the industrial control network, as device firmware updates are essential for maintaining security posture and operational reliability. The vulnerability particularly affects environments where continuous operation is required, as any disruption to the PKS platform can lead to production halts or safety system degradation.
Mitigation strategies for CVE-2016-8344 should focus on implementing robust input validation controls and network segmentation measures to prevent unauthorized access to critical industrial control systems. Organizations should deploy network monitoring solutions that can detect anomalous packet patterns and implement strict access controls for system administration interfaces. The vulnerability aligns with ATT&CK technique T1499.001 for "Endpoint Denial of Service" and represents a significant concern for the industrial control systems community. System administrators should prioritize applying vendor-provided patches and updates as soon as they become available, while also implementing network access controls to limit exposure of vulnerable systems to external threats. The incident highlights the importance of maintaining up-to-date security measures in industrial environments where system availability directly impacts operational safety and productivity.