{"schemaVersion":3,"id":"USN-4480-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"keystone vulnerabilities\n\nIt was discovered that OpenStack Keystone incorrectly handled EC2\ncredentials. An authenticated attacker with a limited scope could possibly\ncreate EC2 credentials with escalated permissions. (CVE-2020-12689,\nCVE-2020-12691)\n\nIt was discovered that OpenStack Keystone incorrectly handled the list of\nroles provided with OAuth1 access tokens. An authenticated user could\npossibly end up with more role assignments than intended. (CVE-2020-12690)\n\nIt was discovered that OpenStack Keystone incorrectly handled EC2 signature\nTTL checks. A remote attacker could possibly use this issue to reuse\nAuthorization headers. (CVE-2020-12692)","dates":{"published":"2020-09-01T11:10:10.000Z","modified":"2026-04-27T15:41:00.305Z","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":"keystone","name":"keystone","label":"keystone","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/keystone","purlType":"deb","versions":[{"text":"< 2:13.0.4-0ubuntu1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2:13.0.4-0ubuntu1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-4480-1","label":"ubuntu.com/security/notices/USN-4480-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-12689","label":"ubuntu.com/security/CVE-2020-12689","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-12690","label":"ubuntu.com/security/CVE-2020-12690","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-12691","label":"ubuntu.com/security/CVE-2020-12691","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-12692","label":"ubuntu.com/security/CVE-2020-12692","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2020-12689","CVE-2020-12690","CVE-2020-12691","CVE-2020-12692"],"downstream":[],"duplicates":[],"related":["CVE-2020-12689","CVE-2020-12690","CVE-2020-12691","CVE-2020-12692"]},"timeline":[{"kind":"published","date":"2020-09-01T11:10:10.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-27T15:41:00.305Z","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":"2026-10-20T12:19:00.418Z","stale":false,"partial":false}}