CVE-2009-4234 in Network Access Controller SP1910
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in loginpages/error_user.shtml on the Micronet Network Access Controller SP1910 allows remote attackers to inject arbitrary web script or HTML via the msg parameter.
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Analysis
by VulDB Data Team • 11/19/2024
The CVE-2009-4234 vulnerability represents a classic cross-site scripting flaw within the Micronet Network Access Controller SP1910 device, specifically targeting the loginpages/error_user.shtml component. This vulnerability exists in the device's web-based management interface and demonstrates a critical weakness in input validation and output sanitization mechanisms. The affected parameter msg serves as an entry point for malicious actors to execute arbitrary script code within the context of authenticated user sessions, potentially compromising the security posture of the entire network infrastructure.
The technical exploitation of this vulnerability occurs through manipulation of the msg parameter within the error_user.shtml page, which fails to properly sanitize user-supplied input before rendering it in the web response. This inadequate input validation creates an environment where attackers can inject malicious HTML or JavaScript code that executes in the victim's browser when the error page is displayed. The vulnerability is classified as a reflected XSS attack since the malicious payload is reflected back to the user through the vulnerable parameter without being stored on the server. This flaw directly maps to CWE-79, which defines Cross-Site Scripting as a weakness where untrusted data is sent to a web browser without proper validation or encoding, and aligns with ATT&CK technique T1059.007 for script-based execution.
The operational impact of this vulnerability extends beyond simple data theft or session hijacking, as it provides attackers with the capability to manipulate the authentication process and potentially gain unauthorized access to the network management interface. An attacker could craft malicious payloads that redirect users to phishing sites, steal session cookies, or execute commands within the context of the authenticated user's browser. The vulnerability particularly affects network administrators who may inadvertently click on malicious links within error messages, thereby compromising their administrative privileges. Given that this device serves as a network access controller, successful exploitation could lead to complete network compromise, especially in environments where the device controls user authentication and access policies.
Mitigation strategies for CVE-2009-4234 should focus on immediate input validation and output encoding measures, including implementing proper parameter sanitization for all user-supplied input and ensuring that all dynamic content is properly escaped before rendering in web responses. Organizations should deploy web application firewalls to detect and block malicious payloads targeting this specific vulnerability, while also implementing network segmentation to limit the potential impact of successful exploitation. Regular security assessments and vulnerability scanning should be conducted to identify similar flaws in other network devices, particularly those with web-based management interfaces. The device manufacturer should be consulted for firmware updates or patches, and if no updates are available, network administrators should consider implementing additional authentication controls and monitoring mechanisms to detect suspicious activity around the affected component. This vulnerability underscores the importance of secure coding practices and input validation in network infrastructure devices, particularly those handling user authentication and error reporting functions.