CVE-2016-7821 in WNC01WH
Summary
by MITRE
Buffalo WNC01WH devices with firmware version 1.0.0.8 and earlier allow remote attackers to cause a denial of service against the management screen via unspecified vectors.
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Analysis
by VulDB Data Team • 10/15/2019
The Buffalo WNC01WH device represents a wireless network camera product line that suffered from a critical denial of service vulnerability affecting firmware versions 1.0.0.8 and earlier. This vulnerability specifically targets the device's management interface, creating a significant security risk for users who rely on the device for surveillance purposes. The flaw allows remote attackers to disrupt access to the device's administrative functions without requiring authentication, effectively compromising the device's availability and operational integrity.
The technical nature of this vulnerability involves unspecified attack vectors that likely exploit weaknesses in the device's web server implementation or management interface processing. These unspecified vectors could encompass various attack surfaces including improper input validation, memory handling issues, or inadequate session management within the device's web-based administration system. The vulnerability exists at the application layer and affects the device's ability to properly handle incoming requests to the management screen, potentially causing the web server to crash or become unresponsive.
From an operational perspective, this vulnerability presents a serious risk to users who depend on continuous surveillance capabilities. A successful attack could leave users unable to access their security camera feeds or configure device settings, effectively neutralizing the device's primary function. The remote nature of the attack means that adversaries can exploit this weakness from anywhere on the network, making it particularly dangerous for devices deployed in remote locations or accessible from the internet. The impact extends beyond simple service disruption to potentially compromising the overall security posture of the network.
The vulnerability aligns with CWE-119, which addresses improper access to memory locations, and may also relate to CWE-20, concerning improper input validation. From an ATT&CK framework perspective, this vulnerability maps to the T1499.004 technique for network denial of service, potentially enabling adversaries to gain persistent access to networked devices and disrupt critical infrastructure operations. Organizations should prioritize immediate firmware updates to address this vulnerability, as the affected firmware versions represent a significant security risk that could be exploited by malicious actors to compromise surveillance operations and potentially gain further access to connected networks. The vulnerability demonstrates the importance of regular firmware maintenance and security assessments for IoT devices, particularly those handling sensitive security data.