CVE-2018-19864 in NVRmini2 Network Video Recorder
Summary
by MITRE
NUUO NVRmini2 Network Video Recorder firmware through 3.9.1 allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow), resulting in ability to read camera feeds or reconfigure the device.
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Analysis
by VulDB Data Team • 08/13/2024
The NUUO NVRmini2 Network Video Recorder represents a critical security vulnerability classified as CVE-2018-19864, where firmware versions through 3.9.1 contain a buffer overflow flaw that enables remote code execution. This vulnerability resides within the device's network communication protocols and authentication mechanisms, specifically affecting the firmware's handling of incoming data packets. The flaw manifests when the system processes malformed input through its network interface, creating an exploitable condition that can be leveraged by remote attackers without requiring authentication credentials.
The technical implementation of this vulnerability stems from improper bounds checking within the firmware's network processing routines, creating a classic buffer overflow condition that can be triggered through carefully crafted network requests. This flaw operates at the application layer of the network stack, specifically targeting the device's configuration and data handling modules. Attackers can exploit this weakness to inject malicious code that executes with the privileges of the affected service, potentially allowing full system compromise. The vulnerability's impact extends beyond simple code execution as it can also cause denial of service conditions that render the device inoperable.
The operational consequences of this vulnerability are severe for organizations relying on NUUO NVRmini2 devices for video surveillance and security monitoring. Remote attackers can gain unauthorized access to live camera feeds, potentially compromising sensitive security operations and surveillance data. The ability to reconfigure the device means that attackers can modify network settings, disable security features, or redirect video streams to unauthorized recipients. This creates a significant risk for enterprises, government agencies, and critical infrastructure operators who depend on these devices for security monitoring and data integrity. The vulnerability's remote exploitability eliminates the need for physical access, making it particularly dangerous for distributed security deployments.
Organizations should immediately implement mitigation strategies including firmware updates to versions that address the buffer overflow condition, network segmentation to isolate affected devices, and enhanced monitoring of network traffic for suspicious patterns. The vulnerability aligns with CWE-121, which describes buffer overflow conditions in stack-based buffers, and represents a common attack vector that maps to multiple ATT&CK tactics including privilege escalation and persistence. Network administrators should also consider implementing intrusion detection systems to monitor for exploitation attempts and establish network access controls that limit communication to trusted sources only. Regular security assessments and vulnerability scanning should be conducted to identify similar weaknesses in other networked security devices within the organization's infrastructure.