{"id":"CVE-2023-0284","aliases":["EUVD-2023-12363","GHSA-4w9g-pcf2-cj8r","UBUNTU-CVE-2023-0284"],"status":"published","title":"Improper validation of LDAP user IDs","description":"Improper Input Validation of LDAP user IDs in Tribe29 Checkmk allows attackers that can control LDAP user IDs to manipulate files on the server. Checkmk \u003c= 2.1.0p19, Checkmk \u003c= 2.0.0p32, and all versions of Checkmk 1.6.0 (EOL) are affected.","severity":{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00955,"percentile":0.61647,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2023-01-24T12:03:57Z","modified":"2026-10-24T10:30:26Z","affected":[{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"check-mk","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"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"check-mk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.8p16-1ubuntu0.1","1.2.8p16-1ubuntu0.2"]}],"products":[{"vendor":"checkmk","product":"checkmk"},{"vendor":"checkmk gmbh","product":"checkmk"},{"vendor":"tribe29","product":"checkmk"}],"references":[{"url":"https://checkmk.com/werk/15181","tags":["x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-0284"},{"url":"https://github.com/advisories/GHSA-4w9g-pcf2-cj8r"},{"url":"https://ubuntu.com/security/CVE-2023-0284","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-0284","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2023-0284","title":"Improper validation of LDAP user IDs","description":"Improper Input Validation of LDAP user IDs in Tribe29 Checkmk allows attackers that can control LDAP user IDs to manipulate files on the server. Checkmk \u003c= 2.1.0p19, Checkmk \u003c= 2.0.0p32, and all versions of Checkmk 1.6.0 (EOL) are affected.","status":"published","published":"2023-01-24T12:03:57.774Z","modified":"2025-03-27T20:22:06.041Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:35:35.256261Z"}],"euvd":[{"id":"EUVD-2023-12363","description":"Improper Input Validation of LDAP user IDs in Tribe29 Checkmk allows attackers that can control LDAP user IDs to manipulate files on the server. Checkmk \u003c= 2.1.0p19, Checkmk \u003c= 2.0.0p32, and all versions of Checkmk 1.6.0 (EOL) are affected.","status":"published","published":"2023-01-24T12:03:57Z","modified":"2025-03-27T20:22:06Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"medium"}],"updated_at":"2026-11-02T20:52:48.662755Z"}],"ghsa":[{"id":"GHSA-4w9g-pcf2-cj8r","title":"Improper Input Validation of LDAP user IDs in Tribe29 Checkmk allows attackers that can control...","description":"Improper Input Validation of LDAP user IDs in Tribe29 Checkmk allows attackers that can control LDAP user IDs to manipulate files on the server. Checkmk \u003c= 2.1.0p19, Checkmk \u003c= 2.0.0p32, and all versions of Checkmk 1.6.0 (EOL) are affected.","status":"published","published":"2023-01-26T21:30:20Z","modified":"2023-02-06T18:30:31Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:53:58.500745Z"}],"nvd":[{"id":"CVE-2023-0284","description":"Improper Input Validation of LDAP user IDs in Tribe29 Checkmk allows attackers that can control LDAP user IDs to manipulate files on the server. Checkmk \u003c= 2.1.0p19, Checkmk \u003c= 2.0.0p32, and all versions of Checkmk 1.6.0 (EOL) are affected.","status":"published","published":"2023-01-26T21:18:07.03Z","modified":"2026-06-17T05:25:12.4Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:07:46.064662Z"}],"osv":[{"id":"CVE-2023-0284","description":"Improper Input Validation of LDAP user IDs in Tribe29 Checkmk allows attackers that can control LDAP user IDs to manipulate files on the server. Checkmk \u003c= 2.1.0p19, Checkmk \u003c= 2.0.0p32, and all versions of Checkmk 1.6.0 (EOL) are affected.","status":"published","published":"2023-01-26T21:18:07.03Z","modified":"2026-10-24T10:30:26.311001527Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:29.487253Z"},{"id":"UBUNTU-CVE-2023-0284","description":"Improper Input Validation of LDAP user IDs in Tribe29 Checkmk allows attackers that can control LDAP user IDs to manipulate files on the server. Checkmk \u003c= 2.1.0p19, Checkmk \u003c= 2.0.0p32, and all versions of Checkmk 1.6.0 (EOL) are affected.","status":"published","published":"2023-01-26T21:18:00Z","modified":"2025-10-24T05:01:03Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"medium"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:54:18.756095Z"}]}}