CVE-2016-11015 in JNR1010
Summary
by MITRE
NETGEAR JNR1010 devices before 1.0.0.32 allow cgi-bin/webproc CSRF via the :InternetGatewayDevice.X_TWSZ-COM_URL_Filter.BlackList.1.URL parameter.
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Analysis
by VulDB Data Team • 01/09/2024
The vulnerability identified as CVE-2016-11015 affects NETGEAR JNR1010 wireless routers running firmware versions prior to 1.0.0.32. This represents a cross-site request forgery vulnerability that specifically targets the device's web management interface through the cgi-bin/webproc endpoint. The flaw enables attackers to manipulate the device's URL filtering configuration by injecting malicious parameters into the InternetGatewayDevice.X_TWSZ-COM_URL_Filter.BlackList.1.URL parameter, effectively allowing unauthorized modification of the device's blacklisted URL list.
This vulnerability stems from insufficient input validation and lack of proper authentication mechanisms within the router's web interface. The affected device processes requests through the cgi-bin/webproc script without adequate CSRF protection measures, making it susceptible to attacks where an attacker can trick a logged-in user into executing unintended administrative commands. The specific parameter targeted belongs to the device's URL filtering functionality, which is part of the X_TWSZ-COM_URL_Filter extension developed by TWSZ Communications for custom URL filtering capabilities. This particular implementation fails to verify the authenticity of requests originating from the web interface, creating a pathway for malicious actors to modify security policies.
The operational impact of this vulnerability extends beyond simple configuration changes, as it allows attackers to potentially redirect traffic, block legitimate services, or introduce malicious domains into the router's filtering system. An attacker who successfully exploits this vulnerability could gain persistent control over the device's network filtering capabilities, potentially enabling further attacks such as man-in-the-middle operations, traffic redirection, or complete network isolation of specific services. The vulnerability affects the device's ability to maintain secure network boundaries and could lead to unauthorized access to network resources, particularly when combined with other exploitation techniques that might leverage the compromised device as a pivot point for lateral movement within the network.
The technical flaw aligns with CWE-352, which specifically addresses Cross-Site Request Forgery vulnerabilities, and demonstrates a failure in implementing proper anti-CSRF tokens or request origin validation. From an ATT&CK perspective, this vulnerability maps to T1021.001 - Remote Services and T1566 - Phishing, as attackers could craft malicious web pages to exploit this weakness while also potentially using the compromised device for further reconnaissance and lateral movement. The vulnerability also represents a failure in the principle of least privilege, as administrative functions are accessible through unauthenticated or insufficiently authenticated mechanisms. Network administrators should implement immediate mitigations including firmware updates to version 1.0.0.32 or later, which address the CSRF vulnerability by implementing proper authentication checks and input validation. Additional protective measures include disabling remote management interfaces when not actively needed, implementing network segmentation to limit access to administrative interfaces, and monitoring for suspicious configuration changes in the device's URL filtering settings.