CVE-2018-18882 in X-320M-I
Summary
by MITRE
A stored cross-site scripting (XSS) issue was discovered in ControlByWeb X-320M-I Web-Enabled Instrumentation-Grade Data Acquisition module 1.05 with firmware revision v1.05. An authenticated user can inject arbitrary script via setup.html in the web interface.
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Analysis
by VulDB Data Team • 08/03/2023
The vulnerability CVE-2018-18882 represents a critical stored cross-site scripting flaw in ControlByWeb X-320M-I instrumentation-grade data acquisition modules running firmware version 1.05. This device operates as a web-enabled interface for industrial data collection systems, making it a potential target for attackers seeking to compromise industrial control networks. The vulnerability exists within the web interface component of the device, specifically in the setup.html page which processes user inputs without adequate sanitization or validation mechanisms. The flaw allows authenticated users to inject malicious scripts that persist in the system and execute when other users access the affected web interface. This stored XSS vulnerability creates a persistent threat vector where malicious code injected by one user can affect all subsequent users who interact with the compromised interface. The security implications are particularly severe in industrial environments where these devices may be part of critical infrastructure monitoring systems, potentially enabling attackers to escalate privileges, steal sensitive operational data, or manipulate control parameters.
The technical exploitation of this vulnerability occurs through the web interface's handling of input parameters in the setup.html page. When an authenticated user submits malicious script code through the web form fields, the application fails to properly sanitize or encode the input before storing it within the device's configuration or display mechanisms. This stored script code then executes in the context of other users who view the affected pages, allowing attackers to perform actions such as stealing session cookies, redirecting users to malicious sites, or executing arbitrary commands within the browser context. The vulnerability is classified as a stored XSS attack because the malicious script is permanently stored on the server and executed automatically when legitimate users access the affected web interface. This differs from reflected XSS where scripts are injected through URLs or request parameters, making stored XSS attacks more persistent and potentially more damaging. The flaw aligns with CWE-79 which defines cross-site scripting vulnerabilities as weaknesses that occur when an application fails to properly validate or escape user-controllable data before including it in dynamically generated web pages.
The operational impact of CVE-2018-18882 extends beyond simple web interface compromise, particularly in industrial control environments where these devices may be part of critical infrastructure monitoring systems. An attacker who successfully exploits this vulnerability could potentially gain access to sensitive operational data, manipulate configuration settings, or use the compromised device as a pivot point for further attacks within the industrial network. The authenticated nature of the vulnerability means that attackers would need initial access credentials, but once obtained, they can maintain persistent access through the stored script injection mechanism. This vulnerability particularly affects environments where these devices are deployed in industrial settings such as manufacturing plants, power generation facilities, or process control systems where the integrity of data acquisition and monitoring is paramount. The attack surface is further expanded when considering that these devices may be accessible from external networks or connected to corporate networks, providing attackers with potential pathways to compromise broader industrial control system architectures. The vulnerability also aligns with ATT&CK technique T1059.007 which covers scripting through web shells, and T1566 which addresses social engineering techniques that could be employed to obtain authentication credentials.
Organizations should implement immediate mitigations including firmware updates from ControlByWeb to address the stored XSS vulnerability in the affected X-320M-I devices. Network segmentation should be implemented to isolate these industrial devices from general corporate networks, reducing the attack surface and limiting potential lateral movement. Access controls must be strictly enforced through strong authentication mechanisms, including multi-factor authentication where possible, to prevent unauthorized access to the web interface. Regular security assessments of industrial control systems should include web interface vulnerability scanning to identify similar stored XSS vulnerabilities in other networked devices. Input validation and output encoding mechanisms should be implemented at the application level to prevent script injection, following secure coding practices that align with OWASP Top Ten security guidelines. Network monitoring should be enhanced to detect suspicious traffic patterns that might indicate exploitation attempts, including unusual data exfiltration or command execution patterns from the affected devices. Additionally, regular security awareness training for personnel managing industrial control systems should emphasize the importance of secure configuration management and the risks associated with web-based interfaces in operational technology environments. The vulnerability serves as a reminder of the critical need for security hardening in industrial control systems where traditional cybersecurity measures may not be sufficient to protect against sophisticated attacks targeting operational technology infrastructure.