CVE-2018-14933 Scanner

NUUO NVRmini is a network video recorder system widely deployed in various commercial and enterprise environments for managing video surveillance. Developed by NUUO, this product is used by security teams and administrators to ensure real-time monitoring and recording of video footage. NVRmini systems are often integrated into broader security management platforms and utilized in industries such as banking, retail, and government facilities. These systems help in recording and storing large volumes of video data, enabling efficient video management and access. NUUO NVRmini is praised for its reliability and integration capabilities with different camera models. However, its deployment requires careful security considerations to avoid unauthorized accesses and potential vulnerabilities.

Remote Code Execution (RCE) is a critical vulnerability that allows an attacker to remotely execute commands on a device without the need for authentication. This vulnerability can be exploited through specially crafted requests to the targeted system, granting attackers the ability to run arbitrary code with elevated privileges. RCE vulnerabilities are particularly dangerous as they can lead to complete system compromise and subsequent infections or data breaches. Detection of such vulnerabilities is crucial for maintaining system integrity and preventing unauthorized actions from malicious actors. RCE can serve as a stepping stone for attackers to spread malware or exfiltrate sensitive information from compromised networks. Addressing such vulnerabilities requires immediate action to prevent potential security breaches.

The implementation of the RCE vulnerability in NUUO NVRmini involves improper handling of the 'uploaddir' parameter in the 'upgrade_handle.php' script. An attacker can manipulate this parameter to inject shell commands, which are executed with the permissions of the web server. This can allow attackers to perform unauthorized actions, such as executing scripts or altering system settings. Specifically, the vulnerability is accessible by sending a crafted GET request with the parameter 'uploaddir' including shell syntax to the vulnerable script. The NUUO NVRmini firmware version referenced is particularly susceptible to this form of exploitation. It is essential to understand the parameter and script involved to address and mitigate the issue effectively.

Exploiting the Remote Code Execution vulnerability can have severe consequences. Attackers leveraging this vulnerability can execute arbitrary commands on the affected device, potentially leading to the installation of malware, data theft, or complete control over the system. This type of control might allow attackers to pivot to other parts of the network, increasing the attack footprint and leading to further breaches or disruptions. Additionally, system-level compromises can disrupt critical operations and undermine the surveillance infrastructure's integrity. Addressing this vulnerability is crucial to prevent unauthorized access, data compromise, and maintain trust in the surveillance system under protection.

REFERENCES

• https://www.exploit-db.com/exploits/45070
• https://www.cve.org/CVERecord?id=CVE-2018-14933
• https://nvd.nist.gov/vuln/detail/CVE-2018-14933