Checkmk Werk 15423: Linux agent: Handle failing symmetric encryption

ID: 15423 Title: Linux agent: Handle failing symmetric encryption Component: Checks & agents Level: 1 Class: Security fix Version: 2.3.0b1 Prior to this Werk the symmetric encryption of agent data (if configured) would fail silently if the option "Run agent as non-root user (Linux)" was also set, since these two options are not compatible. As a result, agent output would be sent unencrypted. If symmetric encryption is configured, but failing, the agent will now abort immediately and transmit a message about the failure as the only output.<br> This will then be reported at the <i>Check_MK Agent</i> service of the host, alongside a <tt>CRIT</tt> status. <b>Affected Versions</b>: LI: 2.2.0 (beta) LI: 2.1.0 LI: 2.0.0 LI: 1.6.0 (EOL) <b>Vulnerability Management</b>: We have rated the issue with a CVSS Score of 3.7 (Low) with the following CVSS vector: <tt>CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N</tt>. We have assigned CVE <tt>CVE-2023-1768</tt>.