{"schemaVersion":3,"id":"CVE-2023-46317","aliases":["UBUNTU-CVE-2023-46317","DEBIAN-CVE-2023-46317"],"status":"published","duplicateOf":null,"title":null,"description":"Knot Resolver before 5.7.0 performs many TCP reconnections upon receiving certain nonsensical responses from servers.","dates":{"published":"2023-10-22T00:00:00.000Z","modified":"2024-09-12T17:45:59.356Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":10,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Debian","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":10,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00636,"percentile":0.49504,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00636},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00636,"percentile":0.49504}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00636,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00636,"percentile":0.49504}]},"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":"debian","product":"knot-resolver","name":"knot-resolver","label":"knot-resolver","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/knot-resolver","purlType":"deb","versions":[{"text":"< 5.6.0-1+deb12u1","noFixRecorded":false,"fixedIn":null},{"text":"< 5.7.0-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.6.0-1+deb12u1 | < 5.7.0-1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"knot-resolver","name":"knot-resolver","label":"knot-resolver","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/knot-resolver","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"nic","product":"knot_resolver","name":"knot resolver","label":"knot_resolver","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 5.7.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.7.0","eol":null,"hubHref":"/vendor/nic/knot_resolver"}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.knot-resolver.cz/2023-08-22-knot-resolver-5.7.0.html","label":"www.knot-resolver.cz/2023-08-22-knot-resolver-5.7.0.html","hostname":"www.knot-resolver.cz","tags":["REPORT","Release Notes"]},{"url":"https://gitlab.nic.cz/knot/knot-resolver/-/merge_requests/1448","label":"gitlab.nic.cz/knot/knot-resolver/-/merge_requests/1448","hostname":"gitlab.nic.cz","tags":["REPORT","Patch","Release Notes"]},{"url":"https://ubuntu.com/security/CVE-2023-46317","label":"ubuntu.com/security/CVE-2023-46317","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-46317","label":"www.cve.org/CVERecord?id=CVE-2023-46317","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2023-46317","label":"security-tracker.debian.org/tracker/CVE-2023-46317","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["DSA-5633-1"],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2023-10-22T00:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-09-12T17:45:59.356Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":30,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T21:30:52.468Z","stale":false,"partial":false}}