{"id":"UBUNTU-CVE-2023-2020","details":"Insufficient permission checks in the REST API in Tribe29 Checkmk \u003c= 2.1.0p27 and \u003c= 2.2.0b4 (beta) allow unauthorized users to schedule downtimes for any host.","modified":"2025-10-24T05:01:14Z","published":"2023-04-18T12:15:00Z","upstream":["CVE-2023-2020"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-2020"},{"type":"REPORT","url":"https://checkmk.com/werk/13981"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-2020"}],"affected":[{"package":{"name":"check-mk","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/check-mk@1.2.6p12-1ubuntu0.16.04.1+esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.6p5-1","1.2.6p12-1","1.2.6p12-1ubuntu0.16.04.1","1.2.6p12-1ubuntu0.16.04.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.2.6p12-1ubuntu0.16.04.1+esm1","binary_name":"check-mk-agent"},{"binary_version":"1.2.6p12-1ubuntu0.16.04.1+esm1","binary_name":"check-mk-agent-logwatch"},{"binary_version":"1.2.6p12-1ubuntu0.16.04.1+esm1","binary_name":"check-mk-config-icinga"},{"binary_version":"1.2.6p12-1ubuntu0.16.04.1+esm1","binary_name":"check-mk-config-nagios3"},{"binary_version":"1.2.6p12-1ubuntu0.16.04.1+esm1","binary_name":"check-mk-livestatus"},{"binary_version":"1.2.6p12-1ubuntu0.16.04.1+esm1","binary_name":"check-mk-multisite"},{"binary_version":"1.2.6p12-1ubuntu0.16.04.1+esm1","binary_name":"check-mk-server"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-2020.json"}},{"package":{"name":"check-mk","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/check-mk@1.2.8p16-1ubuntu0.2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.8p16-1ubuntu0.1","1.2.8p16-1ubuntu0.2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.2.8p16-1ubuntu0.2","binary_name":"check-mk-agent"},{"binary_version":"1.2.8p16-1ubuntu0.2","binary_name":"check-mk-agent-logwatch"},{"binary_version":"1.2.8p16-1ubuntu0.2","binary_name":"check-mk-config-icinga"},{"binary_version":"1.2.8p16-1ubuntu0.2","binary_name":"check-mk-livestatus"},{"binary_version":"1.2.8p16-1ubuntu0.2","binary_name":"check-mk-multisite"},{"binary_version":"1.2.8p16-1ubuntu0.2","binary_name":"check-mk-server"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-2020.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}