CVE-2024-22200 is a low-severity vulnerability identified in vantage6-UI, the user interface component of the vantage6 platform. The vulnerability is categorized under CWE-200, which relates to the exposure of sensitive information to unauthorized actors. Specifically, the issue arises from the vantage6-UI docker image leaking the version of the nginx web server it uses. This version disclosure can provide attackers with information that may aid in crafting targeted attacks against known vulnerabilities in that specific nginx version. The vulnerability affects all vantage6-UI versions prior to 4.2.0, where the issue was addressed by changing the deployment method to run the UI as an Angular application, thereby eliminating the nginx version leak. The CVSS v3.1 base score is 3.3, reflecting a low severity due to the limited impact on confidentiality (only version information disclosure), no impact on integrity or availability, the requirement for local access (AV:L), low attack complexity, and the need for low privileges but no user interaction. There are no known exploits in the wild at this time. While the information disclosed is not highly sensitive, version leakage can be a useful reconnaissance vector for attackers seeking to identify vulnerable systems or plan further attacks.

For European organizations using vantage6-UI versions prior to 4.2.0, this vulnerability primarily poses a minor information disclosure risk. The exposure of the nginx version could assist attackers in fingerprinting the environment and potentially identifying other vulnerabilities to exploit if the nginx version is outdated or unpatched. However, since the vulnerability does not directly allow unauthorized access, data modification, or service disruption, the immediate impact is limited. Organizations handling sensitive or regulated data should still consider this a risk because it can facilitate more targeted attacks. In sectors such as healthcare, finance, or government within Europe, where vantage6 might be deployed for federated learning or data collaboration, even minor information leaks can contribute to a broader attack chain. The vulnerability's low severity and lack of known exploits reduce the urgency but do not eliminate the need for remediation, especially in compliance-driven environments.

To mitigate CVE-2024-22200, European organizations should upgrade vantage6-UI to version 4.2.0 or later, where the vulnerability is patched by running the UI as an Angular application instead of using the vulnerable nginx docker image. If immediate upgrading is not feasible, organizations can consider the following additional measures: 1) Restrict network access to the vantage6-UI service to trusted internal networks or VPNs to reduce exposure to unauthorized actors. 2) Implement web application firewalls (WAFs) to monitor and block suspicious reconnaissance activities targeting version information. 3) Regularly audit and update all components, including nginx, to ensure no other known vulnerabilities exist. 4) Monitor logs for unusual access patterns that might indicate probing attempts. 5) Educate system administrators about the importance of minimizing information leakage through server headers or error messages. These steps, combined with the upgrade, will reduce the risk of exploitation and improve overall security posture.