Ntopng Unauthorized Admin Access Scanner

Ntopng is a passive network monitoring tool widely used by network administrators and security professionals to monitor network traffic. Operating at various levels, from small businesses to large-scale enterprise environments, Ntopng provides comprehensive network visibility and analytics. The tool is crucial for maintaining network security and operational efficiency, offering insights into network usage and potential security gaps. Regular updates to Ntopng help ensure that it remains effective in emerging network environments. As an open-source tool, it is accessible to both independent users and corporate IT teams seeking to optimize their networks. However, without proper security measures, applications like Ntopng can become potential targets for attacks.

Unauthorized Admin Access represents a significant security risk in network monitoring tools like Ntopng. This vulnerability allows malicious users to bypass authentication controls, gaining unauthorized access to sensitive information. Successful exploitation of this flaw could lead to information leaks and potentially damaging system compromise. Unchecked, it can allow attackers to alter configurations, track network traffic, or leverage the compromised system for further attacks. Monitoring and securing network applications against such vulnerabilities are essential to safeguarding network integrity. Most importantly, deploying updates and patches significantly mitigates these risks.

Technically, the vulnerability is found in the authentication mechanics of Ntopng versions up to 4.2. The flaw exploits weak points in the user authentication process, especially when accessing certain secured application's paths via HTTP GET requests. Specifically, manipulating the request path to bypass access control checks gains entry to administrative functions. The vulnerable endpoint allows the bypass by inserting crafted file paths that the system fails to properly verify. Authorized users' session management credentials are also inadequately enforced in these instances, leading to potential unauthorized access. Protective coding practices must be employed in future Ntopng updates to address these issues.

Exploiting this vulnerability could allow attackers to control network systems or access sensitive network data, leading to operational disruptions. Unchecked, it risks escalation of privileges, data breaches, and distribution of malicious software across the network. Attackers exploiting this flaw can alter network configurations, potentially damaging or hijacking sensitive network operations. In enterprise settings, this could lead to substantial financial and reputational damage. Comprehensive network audits and control evaluation, alongside stringent update protocols, are critical in reducing these risks. Regularly patching network tools and applications ensures heightened resilience against such vulnerabilities.

REFERENCES

• https://nvd.nist.gov/vuln/detail/CVE-2021-27573
• http://noahblog.360.cn/ntopng-multiple-vulnerabilities/
• https://github.com/AndreaOm/docs/blob/c27d2db8dbedb35c9e69109898aaecd0f849186a/wikipoc/PeiQi_Wiki/%E6%9C%8D%E5%8A%A1%E5%99%A8%E5%BA%94%E7%94%A8%E6%BC%8F%E6%B4%9E/HongKe/HongKe%20ntopng%20%E6%B5%81%E9%87%8F%E5%88%86%E6%9E%90%E7%B3%BB%E7%BB%9F%20%E6%9D%83%E9%99%90%E7%BB%95%E8%BF%87%E6%BC%8F%E6%B4%9E%20CVE-2021-28073.md