{"schemaVersion":3,"id":"USN-4374-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"unbound vulnerabilities\n\nLior Shafir, Yehuda Afek, and Anat Bremler-Barr discovered that Unbound\nincorrectly handled certain queries. A remote attacker could use this issue\nto perform an amplification attack directed at a target. (CVE-2020-12662)\n\nIt was discovered that Unbound incorrectly handled certain malformed\nanswers. A remote attacker could possibly use this issue to cause Unbound\nto crash, resulting in a denial of service. (CVE-2020-12663)","dates":{"published":"2020-05-27T15:19:10.000Z","modified":"2026-04-27T15:37:14.665Z","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":"unbound","name":"unbound","label":"unbound","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/unbound","purlType":"deb","versions":[{"text":"< 1.6.7-1ubuntu2.3","noFixRecorded":false,"fixedIn":null},{"text":"< 1.9.4-2ubuntu1.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.6.7-1ubuntu2.3 | < 1.9.4-2ubuntu1.1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-4374-1","label":"ubuntu.com/security/notices/USN-4374-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-12662","label":"ubuntu.com/security/CVE-2020-12662","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-12663","label":"ubuntu.com/security/CVE-2020-12663","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2020-12662","CVE-2020-12663"],"downstream":[],"duplicates":[],"related":["CVE-2020-12662","CVE-2020-12663"]},"timeline":[{"kind":"published","date":"2020-05-27T15:19:10.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-27T15:37:14.665Z","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":"2026-10-20T04:23:27.158Z","stale":false,"partial":false}}