CVE-2016-5674 Scanner

The NUUO NVR is commonly used for surveillance and security by enterprises, offices, and individuals. It provides a user-friendly interface that helps monitor and record video feeds from connected cameras. Often, NVRs are integrated into larger security systems and are valued for their capability to handle multiple cameras and video quality. These devices can be accessed remotely, enabling administrators to manage and monitor security systems from various locations effectively. NUUO NVR’s software is designed to be compatible with a variety of camera brands, enhancing its versatility in various security environments. Consequently, its widespread use in sensitive security scenarios accentuates the importance of addressing vulnerabilities promptly.

This scanner detects a Remote Code Execution vulnerability in the NUUO NVR system, specifically within the __debugging_center_utils___.php file. The vulnerability allows an actor to execute arbitrary PHP code by manipulating the "log" parameter. This critical flaw is typically leveraged through unprotected web interfaces, which, if unpatched, can lead to unauthorized system access. Unauthorized attackers could gain control over the NVR and modify camera feeds, posing significant risks to affected environments. This vulnerability arises primarily due to insufficient input validation, making it a potential entry point for attackers. The critical nature of this flaw emphasizes the necessity for immediate remediation efforts to prevent exploitation.

This vulnerability allows attackers to exploit the __debugging_center_utils___.php file by providing malicious input via the "log" parameter. When exploited, the vulnerability enables attackers to inject PHP commands that are executed on the server. The detection mechanism involves monitoring responses from the server for Linux 'uid' output or Windows 'IP' information, indicating successful execution. Such vulnerabilities are severe due to their potential to bypass typical security checks. A successful exploit could compromise the confidentiality, integrity, and availability of the entire NVR system. Thus, it is crucial to monitor this endpoint to detect any suspicious activities actively.

The possible effects of exploiting this vulnerability include unauthorized access to the NVR system, leading to potential data theft or tampering with surveillance footage. Attackers could disrupt security operations by disabling camera feeds or corrupting stored data. Additionally, compromised systems might be used as a launching pad for further attacks on connected networks, thereby expanding the scope of potential damage. The RCE vulnerability could also lead to service disruptions, causing downtime in surveillance operations. Organizations relying heavily on these systems could face significant financial and reputational damage if the NVR is exploited successfully.

REFERENCES

• http://www.kb.cert.org/vuls/id/856152
• https://www.exploit-db.com/exploits/40200/