External risk intelligence

NUUO NVRmini Remote Command Execution Advisory

CVE advisoryKnown Exploit

CVE-2018-14933

NUUO NVRmini devices are affected by a remote command execution vulnerability. This allows unauthorized attackers to control the device and access its data. Organizations using these devices face a high risk of system compromise and data exposure.

5Halo Surface Signal

OS Command Injection

Nuuo Nvrmini Firmware

2016

External exposure likelihood

Halo Surface Signal score for CVE-2018-14933

The affected product is a Network Video Recorder (NVR), which is an appliance designed for network-based management and surveillance. Such devices are frequently deployed with web interfaces exposed to the internet to allow remote monitoring and administration, and this vulnerability exists within a web-accessible script used for managing file directories.

Horizon Alert

Summary of the vulnerability and why it matters

NUUO NVRmini devices are vulnerable due to a flaw in how they handle file upload directories. This weakness allows attackers to execute commands on the affected systems. The potential impact includes unauthorized control over the device and any data it manages.

  • Vulnerable NUUO NVRmini devices
  • Allows remote command execution
  • Compromises device and data

Attack Path

How an attacker could exploit the issue

This vulnerability allows for remote command execution on NUUO NVRmini devices. An attacker can exploit this by sending specially crafted input to a web-accessible script, leading to unauthorized control over the affected system. The impact can include the compromise of sensitive data and disruption of business operations.

  • External network exposure required
  • Attacker sends malicious commands
  • Compromise of device control

Live Threat

Current exploitation, exposure, and threat context

This vulnerability presents a significant risk to organizations using the affected NUUO NVRmini devices. Attackers with the necessary technical skills can remotely execute commands on these devices. This could lead to unauthorized access to sensitive surveillance data and potential disruption of security systems. Given the high exploitability and potential for severe impact, organizations should consider this a critical issue.

  • Attackers with moderate skills.
  • No access or conditions required.
  • High business risk or urgency.

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

An identified vulnerability exists within NUUO NVRmini devices, specifically in the `upgrade_handle.php` script. This issue allows for remote command execution through shell metacharacters within the `uploaddir` parameter. The risk of exploitation is high due to the nature of the vulnerability and the typical network exposure of these devices.

  • Identify all NUUO NVRmini devices.
  • Isolate affected devices from the network.
  • Discontinue use of NUUO NVRmini devices.

Frequently asked questions

What is NUUO NVRmini and its vulnerability?

NUUO NVRmini devices are Network Video Recorders used for managing and storing surveillance camera feeds, offering remote access for monitoring. CVE-2018-14933 is a critical vulnerability in these devices that allows remote command execution.

What weakness does CVE-2018-14933 represent?

CVE-2018-14933 is an instance of CWE-78, which is OS command injection. This means an attacker can trick the software into running arbitrary operating system commands on the affected NUUO NVRmini device.

How could an attacker trigger this vulnerability on NUUO NVRmini devices?

An attacker could trigger this by sending specific commands, including shell metacharacters, within the `uploaddir` parameter of the `upgrade_handle.php` script. This script is typically accessible remotely.

What is the relevance of CVE-2018-14933 for NUUO NVRmini devices?

This vulnerability is highly relevant as it allows remote command execution on NUUO NVRmini devices, potentially leading to compromise of surveillance data and system control. The Halo Surface Signal scores this as 'Very likely' due to the network-exposed nature of NVRs and the web interface vulnerability.

What actions should be taken regarding the NUUO NVRmini vulnerability?

Given that NUUO NVRmini devices are end-of-life, the primary action is to discontinue their use. If identification is needed, locate all NUUO NVRmini devices and consider isolating them from the network.

References