CVE-2022-26972 in TransForm N
Summary
by MITRE • 06/02/2022
Barco Control Room Management Suite web application, which is part of TransForm N before 3.14, is exposing a URL /cgi-bin endpoint. The URL parameters are not correctly sanitized, leading to reflected XSS.
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Analysis
by VulDB Data Team • 06/06/2022
The Barco Control Room Management Suite represents a critical component within the TransForm N platform, designed for enterprise-level control room management and visualization. This web application serves as the primary interface for operators to monitor and control various display systems, making it a prime target for cyber adversaries seeking to compromise operational technology environments. The vulnerability exists within the /cgi-bin endpoint of the web application, which functions as a gateway for executing server-side scripts and handling user input parameters. The exposed endpoint lacks proper input validation mechanisms, creating an avenue for malicious actors to inject malicious scripts into the application's response.
The technical flaw manifests through inadequate parameter sanitization within the /cgi-bin endpoint, allowing reflected cross-site scripting attacks to occur when user-supplied parameters are directly incorporated into the web response without proper encoding or validation. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, specifically classified as reflected XSS where malicious scripts are reflected from the web server back to the user's browser. The vulnerability is particularly concerning because it operates at the web application layer, potentially allowing attackers to execute arbitrary JavaScript code in the context of a victim's browser session.
The operational impact of this vulnerability extends beyond simple script execution, as it could enable attackers to hijack user sessions, steal sensitive operational data, or manipulate the control room interface to disrupt critical operations. In industrial control environments, this could lead to unauthorized access to display systems, potentially causing operational disruptions or even safety hazards. The reflected nature of the vulnerability means that an attacker could craft malicious URLs that, when clicked by an authenticated user, would execute the attacker's payload in the victim's browser, making this attack vector particularly insidious. The vulnerability affects versions prior to 3.14, indicating that organizations running older versions of the TransForm N platform remain at risk.
Mitigation strategies should focus on immediate input validation and output encoding within the web application, ensuring that all parameters passed to the /cgi-bin endpoint are properly sanitized before being processed or returned in web responses. Organizations should implement proper web application firewall rules to detect and block malicious parameter injection attempts. The recommended approach includes applying the vendor-provided security patch for TransForm N version 3.14 or later, which addresses the input sanitization issues. Additionally, network segmentation and access control measures should be implemented to limit exposure of the vulnerable web application to untrusted networks. Security monitoring should include detection of suspicious parameter patterns in web application logs, and regular security assessments should verify that input validation mechanisms are properly implemented throughout the application. This vulnerability aligns with ATT&CK technique T1566.001 for initial access through spearphishing attachments and T1059.007 for command and scripting interpreter through web shells, highlighting the multi-stage attack potential of such vulnerabilities in operational technology environments.