Previously to this Werk an attacker could utilize a cross site request forgery vulnerability in Checkmk to add elements to visuals (e.g. dashboards, reports, etc.).
This vulnerability was identified through a commissioned penetration test conducted by SSE – Secure Systems Engineering GmbH (Jan Hörsch).
If you are unable to update in a timely manner you could remove the permission Customize dashboards and use them and Customize reports and use them from the used roles. So the users and admins cannot edit dashboards and reports anymore.
Adding a Custom url with a malicious URL is blocked by the Content-Security-Policy.
All versions of Checkmk including (1.6) are subject to this vulnerability.
We have rated the issue with a CVSS Score of 5.4 (Medium) with the following CVSS vector:
We have assigned CVE-2022-48320 for this issue.
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