CVE-2023-38422 in Intuition 9
Summary
by MITRE • 08/24/2023
Walchem Intuition 9 firmware versions prior to v4.21 are missing authentication for some of the API routes of the management web server. This could allow an attacker to download and export sensitive data.
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Analysis
by VulDB Data Team • 09/13/2023
The Walchem Intuition 9 is a industrial control system designed for water treatment and monitoring applications that relies on a web-based management interface for configuration and data access. This vulnerability affects firmware versions prior to v4.21 where certain API endpoints within the management web server lack proper authentication mechanisms. The absence of authentication controls creates a critical security gap that allows unauthorized access to sensitive operational data and system configurations. This represents a significant weakness in the device's security architecture as it exposes core functionality to potential attackers without proper verification of credentials or authorization status.
The technical flaw manifests as a missing authentication check on specific API routes within the web server component of the firmware. These unauthenticated endpoints likely provide access to system configuration parameters, operational logs, sensor data, and other sensitive information that should only be accessible to authorized personnel. The vulnerability falls under CWE-284 which describes improper access control due to insufficient authentication mechanisms. Attackers can exploit this weakness by directly accessing the API endpoints without requiring valid credentials, potentially leading to comprehensive data exfiltration and system compromise. The lack of authentication enforcement on these routes creates a backdoor that bypasses the normal security boundaries of the device.
The operational impact of this vulnerability extends beyond simple data exposure to encompass potential system disruption and operational security breaches. An attacker who successfully exploits this vulnerability could download sensitive operational data including water quality measurements, system configuration settings, and potentially proprietary process parameters. This information could be used for competitive advantage, system exploitation, or to plan more sophisticated attacks against the broader industrial control network. The vulnerability particularly affects industrial environments where operational technology systems are connected to corporate networks, creating potential lateral movement opportunities for attackers who might use the exposed data to map network topology or identify other vulnerable systems.
Organizations should immediately implement mitigation strategies including firmware updates to version 4.21 or later which addresses the authentication gap in the affected API routes. Network segmentation should be implemented to isolate the affected devices from critical corporate networks, reducing the attack surface for potential exploitation. Access controls should be strengthened through the implementation of network access controls, firewall rules, and VPN requirements for remote access to the management interface. Monitoring should be enhanced to detect unauthorized access attempts to the web server API endpoints, with security information and event management systems configured to alert on suspicious activity. The vulnerability demonstrates the importance of proper authentication implementation in industrial control systems and aligns with ATT&CK technique T1071.004 for application layer protocol usage in command and control communications. Regular security assessments and vulnerability scanning should be conducted to identify similar authentication gaps in other industrial control systems within the organization's infrastructure.