Checkmk Werk 14087: Fix privilege escalation vulnerability

ID: 14087 Title: Fix privilege escalation vulnerability Component: Checks & agents Level: 2 Class: Security fix Version: 2.2.0i1 Previously to this Werk an attacker who could become a site user could replace the sites <tt>bin/unixcat</tt> by a custom executable. The Checkmk agent would then run it as root. With this Werk the agent now always calls one of the shipped <tt>unixcat</tt>s below <tt>/omd/versions/</tt>. All maintained versions (>=1.6) are subject to this vulnerability. It is likely that also previous versions were vulnerable. To check against possible exploitation make sure that the sites directory <tt>~MySite/bin</tt> points to <tt>/omd/versions/MySitesVersion/bin<tt>. CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H 8.2 CVE will be added here later