Checkmk Werk 13902: Secure path for OMD hooks

ID: 13902 Title: Secure path for OMD hooks Component: OMD Level: 1 Class: Security fix Version: 2.2.0i1 OMD executes several hooks to determine configuration options (e.g. which port to use for the site apache). These hooks are version dependent, so OMD executed these hooks via a symlink in the site to get the hooks matching the version of the site. The symlinks belong to the site user in order to be able to update the version. Since a <i>OMD status</i> executes those hooks as root, it was possible for a site user to create a malicious hook and execute code as root. All maintained versions (>=1.6) are subject to this vulnerability. It is likely that also previous versions were vulnerable. CVE will be added later here. CVSS: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H 8.2 We thank Timo Klecker for reporting this issue!