CVE-2018-14769 in FD8177
Summary
by MITRE
VIVOTEK FD8177 devices before XXXXXX-VVTK-xx06a allow CSRF.
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Analysis
by VulDB Data Team • 03/20/2020
The vulnerability identified as CVE-2018-14769 affects VIVOTEK FD8177 network video surveillance devices running firmware versions prior to XXXXXX-VVTK-xx06a. This represents a cross-site request forgery vulnerability that fundamentally compromises the security posture of these devices by enabling unauthorized modifications to their configuration parameters. The flaw exists within the device's web-based administration interface, where it fails to properly validate the origin of HTTP requests, creating a pathway for malicious actors to manipulate device settings without proper authentication. The vulnerability is particularly concerning as it allows attackers to perform administrative actions that could fundamentally alter the device's operational parameters, potentially leading to complete compromise of the surveillance infrastructure. This issue falls under CWE-352, which specifically addresses Cross-Site Request Forgery vulnerabilities, where the web application fails to validate that requests originate from legitimate sources.
The technical implementation of this CSRF vulnerability stems from the absence of proper request validation mechanisms within the device's web interface. When legitimate administrative users interact with the device's management portal, the system should verify that requests are initiated from authorized sources and contain appropriate security tokens. However, the FD8177 devices do not implement adequate anti-CSRF measures, allowing attackers to craft malicious requests that, when triggered by authenticated users, execute unintended administrative functions. The vulnerability specifically impacts the device's ability to maintain integrity of its configuration parameters, including settings related to network connectivity, user permissions, and surveillance parameters. Attackers could exploit this weakness to modify network configurations, create new user accounts, alter recording schedules, or disable security features, all without requiring direct authentication credentials. The attack vector typically involves tricking authenticated users into visiting malicious websites or clicking on compromised links that automatically submit requests to the vulnerable device.
The operational impact of this vulnerability extends beyond simple configuration changes, potentially enabling complete takeover of the surveillance system. An attacker who successfully exploits this CSRF vulnerability could render the surveillance system ineffective by disabling recording functions, altering network settings to redirect traffic, or modifying user access controls to gain unauthorized access to recorded footage. The implications are particularly severe for security infrastructure where these devices are deployed, as the compromise could go undetected for extended periods while the attacker maintains persistent access to surveillance data. Organizations relying on VIVOTEK FD8177 devices for critical security operations face significant risk of data exposure, system disruption, and potential regulatory compliance violations. The vulnerability also creates opportunities for attackers to establish persistent backdoors or use the compromised devices as launching points for further attacks within the network infrastructure.
Mitigation strategies for CVE-2018-14769 should prioritize immediate firmware updates to the XXXXXX-VVTK-xx06a version or later, as provided by VIVOTEK. Organizations should also implement network segmentation to limit access to these devices to authorized personnel only, ensuring that administrative interfaces are not directly exposed to untrusted networks. Additional protective measures include implementing web application firewalls to detect and block suspicious requests, enabling multi-factor authentication for administrative access, and conducting regular security assessments of networked devices. The vulnerability demonstrates the critical importance of proper input validation and request origin verification in web applications, aligning with ATT&CK technique T1071.004 for application layer protocol manipulation. Security teams should also establish monitoring procedures to detect unauthorized configuration changes and maintain detailed logs of administrative activities for forensic analysis. Organizations should consider implementing network access controls that restrict administrative access to these devices to specific IP addresses or network segments, reducing the attack surface and limiting potential exploitation opportunities.