CVE-2022-23227 is a critical vulnerability affecting NUUO NVRmini2 devices, allowing unauthenticated attackers to upload encrypted TAR archives. This vulnerability arises from a lack of authentication in the handle_import_user.php script. When combined with another known flaw (CVE-2011-5325), it may lead to arbitrary file overwrites and code execution with root privileges. The CVSS score for this vulnerability is 9.8, indicating a critical severity level.
Risk to organizations includes potential unauthorized access and control over affected devices. Attackers may leverage this vulnerability to introduce malicious users into the system, effectively compromising its integrity and availability. Given the critical nature of this vulnerability, organizations should prioritize patching immediately.
Currently, there is no public exploit available, but the vulnerability has been included in the Known Exploited Vulnerabilities (KEV) catalog, signifying its potential for active exploitation. Organizations using NUUO NVRmini2 devices should take immediate action to mitigate risks.
Given the potential impact and the critical rating of this vulnerability, organizations utilizing affected devices must address this issue in their priority patch cycle.
Vulnerability Details
NUUO NVRmini2 through version 3.11 allows an unauthenticated attacker to upload an encrypted TAR archive, which can be abused to add arbitrary users due to the lack of authentication in handle_import_user.php. The vulnerability is classified under CWE-306, indicating missing authentication for critical functions.
The vulnerability poses a high risk, with a CVSS score of 9.8, highlighting its critical nature. The potential impacts include high confidentiality, integrity, and availability risks, as attackers can exploit this vulnerability to gain root access.
Technical Analysis
The root cause of this vulnerability is the lack of proper authentication checks in the upload functionality. The attack vector is network-based, requiring minimal complexity to exploit. No privileges are required, and user interaction is not necessary, making this vulnerability particularly dangerous.
The potential impacts include a complete compromise of the confidentiality, integrity, and availability of the affected systems. Attackers may exploit this vulnerability to perform unauthorized actions, leading to severe consequences for organizations.
Risk & Impact Analysis
Deployments of NUUO NVRmini2 devices are at significant risk due to this vulnerability. The potential for unauthorized access could lead to severe operational disruptions and loss of sensitive data. The urgency for organizations to address this vulnerability is underscored by its high CVSS score and inclusion in the KEV catalog.
Organizations should evaluate their exposure to this vulnerability and take immediate steps to patch or mitigate the risks associated with it. The blast radius of potential attacks leveraging this vulnerability could impact not only the affected devices but also wider network infrastructure.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The affected versions of the NUUO NVRmini2 firmware include all versions prior to 3.11.0. Organizations using these versions are vulnerable to the outlined exploit and should take immediate action to remediate.
Mitigation & Remediation
Organizations must discontinue utilization of the NUUO NVRmini2 devices, as the product is end-of-life (EoL) and/or end-of-service (EoS). Users should seek alternative solutions to avoid exposure to this critical vulnerability.
For further insight into security practices, organizations are encouraged to engage in penetration testing that exercises their security measures.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unauthorized access attempts and unusual file upload activities. Behavioral anomalies indicative of unauthorized changes to user privileges should also be investigated.
AppSecure Threat Intelligence Insight
This vulnerability exemplifies the ongoing risks associated with inadequate authentication mechanisms in devices. Security teams should learn from this incident to strengthen their authentication processes.
It highlights the importance of proactive security measures, including regular audits of device configurations and timely responses to reported vulnerabilities. For more information on general security practices, consider reviewing our vulnerability management program and engage in continuous security assessments.
For a deeper dive into the vulnerabilities of devices like NUUO NVRmini2, organizations can refer to our guide on penetration testing methodology for insights on effective risk mitigation strategies.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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