{"schemaVersion":3,"id":"USN-4724-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"openldap vulnerabilities\n\nIt was discovered that OpenLDAP incorrectly handled Certificate Exact\nAssertion processing. A remote attacker could possibly use this issue to\ncause OpenLDAP to crash, resulting in a denial of service. (CVE-2020-36221)\n\nIt was discovered that OpenLDAP incorrectly handled saslAuthzTo processing.\nA remote attacker could use this issue to cause OpenLDAP to crash,\nresulting in a denial of service, or possibly execute arbitrary code.\n(CVE-2020-36222, CVE-2020-36224, CVE-2020-36225, CVE-2020-36226)\n\nIt was discovered that OpenLDAP incorrectly handled Return Filter control\nhandling. A remote attacker could use this issue to cause OpenLDAP to\ncrash, resulting in a denial of service, or possibly execute arbitrary\ncode. (CVE-2020-36223)\n\nIt was discovered that OpenLDAP incorrectly handled certain cancel\noperations. A remote attacker could possibly use this issue to cause\nOpenLDAP to crash, resulting in a denial of service. (CVE-2020-36227)\n\nIt was discovered that OpenLDAP incorrectly handled Certificate List\nExtract Assertion processing. A remote attacker could possibly use this\nissue to cause OpenLDAP to crash, resulting in a denial of service.\n(CVE-2020-36228)\n\nIt was discovered that OpenLDAP incorrectly handled X.509 DN parsing. A\nremote attacker could possibly use this issue to cause OpenLDAP to crash,\nresulting in a denial of service. (CVE-2020-36229, CVE-2020-36230)","dates":{"published":"2021-02-08T12:55:14.000Z","modified":"2026-04-22T10:11:59.034Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"ubuntu","product":"openldap","name":"openldap","label":"openldap","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/openldap","purlType":"deb","versions":[{"text":"< 2.4.42+dfsg-2ubuntu3.12","noFixRecorded":false,"fixedIn":null},{"text":"< 2.4.45+dfsg-1ubuntu1.9","noFixRecorded":false,"fixedIn":null},{"text":"< 2.4.49+dfsg-2ubuntu1.6","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.4.42+dfsg-2ubuntu3.12 | < 2.4.45+dfsg-1ubuntu1.9 | < 2.4.49+dfsg-2ubuntu1.6","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-4724-1","label":"ubuntu.com/security/notices/USN-4724-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-36221","label":"ubuntu.com/security/CVE-2020-36221","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-36222","label":"ubuntu.com/security/CVE-2020-36222","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-36223","label":"ubuntu.com/security/CVE-2020-36223","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-36224","label":"ubuntu.com/security/CVE-2020-36224","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-36225","label":"ubuntu.com/security/CVE-2020-36225","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-36226","label":"ubuntu.com/security/CVE-2020-36226","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-36227","label":"ubuntu.com/security/CVE-2020-36227","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-36228","label":"ubuntu.com/security/CVE-2020-36228","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-36229","label":"ubuntu.com/security/CVE-2020-36229","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-36230","label":"ubuntu.com/security/CVE-2020-36230","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2020-36221","CVE-2020-36222","CVE-2020-36223","CVE-2020-36224","CVE-2020-36225","CVE-2020-36226","CVE-2020-36227","CVE-2020-36228","CVE-2020-36229","CVE-2020-36230"],"downstream":[],"duplicates":[],"related":["CVE-2020-36221","CVE-2020-36222","CVE-2020-36223","CVE-2020-36224","CVE-2020-36225","CVE-2020-36226","CVE-2020-36227","CVE-2020-36228","CVE-2020-36229","CVE-2020-36230"]},"timeline":[{"kind":"published","date":"2021-02-08T12:55:14.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-22T10:11:59.034Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T13:29:06.788Z","stale":false,"partial":false}}