CVE-2009-0472 in Controllogix 1756-ENBT
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in the web interface in the Rockwell Automation ControlLogix 1756-ENBT/A EtherNet/IP Bridge Module allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 07/26/2024
The vulnerability identified as CVE-2009-0472 represents a critical security flaw in Rockwell Automation ControlLogix 1756-ENBT/A EtherNet/IP Bridge Module, specifically within its web interface component. This issue manifests as multiple cross-site scripting vulnerabilities that create exploitable entry points for remote attackers to execute malicious web scripts or HTML code within the context of affected systems. The vulnerability exists in the industrial control system hardware that serves as a bridge between EtherNet/IP networks and other industrial communication protocols, making it a significant concern for operational technology environments.
The technical implementation of this vulnerability stems from insufficient input validation and output encoding within the web interface of the ControlLogix 1756-ENBT/A module. Attackers can exploit unspecified vectors to inject malicious scripts that persist in the web interface and execute when other users access the affected module's management interface. This type of vulnerability falls under CWE-79 - Improper Neutralization of Input During Web Page Generation, which specifically addresses the failure to properly sanitize user input before incorporating it into dynamically generated web content. The flaw allows for arbitrary code execution within the browser context of authenticated users who interact with the vulnerable web interface, potentially leading to complete compromise of the administrative functions of the industrial network device.
The operational impact of CVE-2009-0472 extends beyond traditional network security concerns into the realm of industrial control systems where reliability and integrity are paramount. In industrial environments, this vulnerability could enable attackers to manipulate the network bridge functionality, potentially disrupting critical manufacturing processes or gaining unauthorized access to control system communications. The remote exploit capability means that attackers do not require physical access to the industrial facility, making the attack surface significantly larger. From an ATT&CK framework perspective, this vulnerability maps to T1566 - Phishing and T1059 - Command and Scripting Interpreter, as it enables initial access through web-based attacks and allows for execution of malicious code within the browser environment.
Mitigation strategies for this vulnerability should focus on immediate network segmentation and access controls to limit exposure of the affected industrial network devices. Organizations should implement network monitoring solutions specifically designed for industrial environments to detect anomalous traffic patterns that might indicate exploitation attempts. The most effective long-term solution involves applying firmware updates from Rockwell Automation that address the input validation issues within the web interface. Additionally, implementing web application firewalls and strict input validation policies can provide additional protection layers. Security teams should also conduct comprehensive vulnerability assessments of their industrial control systems to identify other potentially affected devices that may share similar architectural vulnerabilities, particularly those from the same vendor or using similar web interface frameworks.