CVE-2024-3850 in NVR301-04S2-P4
Summary
by MITRE • 06/10/2024
Uniview NVR301-04S2-P4 is vulnerable to reflected cross-site scripting attack (XSS). An attacker could send a user a URL that if clicked on could execute malicious JavaScript in their browser. This vulnerability also requires authentication before it can be exploited, so the scope and severity is limited. Also, even if JavaScript is executed, no additional benefits are obtained.
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Analysis
by VulDB Data Team • 03/26/2025
The vulnerability identified as CVE-2024-3850 affects the Uniview NVR301-04S2-P4 network video recorder device, representing a reflected cross-site scripting vulnerability that poses significant security risks to authenticated users. This type of vulnerability falls under the Common Weakness Enumeration category CWE-79, which specifically addresses improper neutralization of input during web output, making it a critical concern for web application security. The device operates within the surveillance and security monitoring domain, where such vulnerabilities could potentially be exploited by threat actors targeting network infrastructure components.
The technical flaw manifests when the device fails to properly sanitize user input parameters within its web interface, allowing maliciously crafted URLs to be reflected back to the victim's browser without adequate output encoding or filtering mechanisms. When an authenticated user clicks on a specially crafted malicious link, the reflected payload executes within the user's browser context, potentially enabling attackers to perform actions such as stealing session cookies, modifying user interface elements, or redirecting users to malicious sites. The vulnerability requires authentication to exploit, which provides some inherent protection but does not eliminate the risk entirely since legitimate users may be tricked into clicking malicious links through social engineering techniques or compromised email accounts.
The operational impact of this vulnerability extends beyond simple script execution, as it represents a potential entry point for more sophisticated attacks within the network infrastructure. Even though the attack requires authentication and provides no additional privileges beyond what the authenticated user already possesses, the ability to execute arbitrary JavaScript code in the context of a legitimate user's session creates opportunities for credential theft, session hijacking, and data exfiltration. The limited scope of the vulnerability means that attackers cannot escalate privileges or access system-level resources directly, but the reflected nature of the attack makes it particularly dangerous in environments where users have administrative access to the NVR system.
Security mitigations for this vulnerability should focus on implementing proper input validation and output encoding mechanisms within the device's web interface components. The recommended approach involves sanitizing all user-supplied input parameters before they are reflected back to the browser, implementing proper content security policies, and ensuring that all web application components properly encode output to prevent script execution. Organizations should also implement network segmentation and access control measures to limit the potential impact of such vulnerabilities, while maintaining regular security updates and patch management procedures. Additionally, user education regarding phishing attacks and suspicious link clicking behaviors remains crucial in preventing exploitation of this type of vulnerability, as the attack vector relies heavily on social engineering techniques to achieve successful exploitation. The vulnerability demonstrates the importance of secure coding practices and input validation in all web applications, particularly those managing sensitive surveillance and security infrastructure where user trust and system integrity are paramount considerations.