{"id":"CVE-2022-40188","details":"Knot Resolver before 5.5.3 allows remote attackers to cause a denial of service (CPU consumption) because of algorithmic complexity. During an attack, an authoritative server must return large NS sets or address sets.","modified":"2026-04-10T04:50:39.056854Z","published":"2022-09-23T16:15:11.673Z","references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S2VE5K3VDUHJOIA2IGT3G5R76IBADMNE/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XO6LIVQS62MI5GG4OVYB5RHVZMYNHAHG/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HIMDNIUI7GTUEKIBBYYW7OCTJQFPDNXL/"},{"type":"ADVISORY","url":"https://gitlab.nic.cz/knot/knot-resolver/-/merge_requests/1343#note_262558"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2022/10/msg00008.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/cz-nic/knot-resolver","events":[{"introduced":"0"},{"fixed":"519080319a2c32b9248435b8cf546affd6f64a5e"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"5.5.3"}]}}],"versions":["v1.0.0","v1.0.0-beta1","v1.0.0-beta2","v1.0.0-beta3","v1.1.0","v1.1.1","v1.2.0","v1.2.0-rc1","v1.2.0-rc2","v1.2.0-rc3","v1.2.1","v1.2.6","v1.3.0","v1.3.1","v1.3.2","v1.3.3","v1.4.0","v1.5.0","v1.5.1","v2.0.0","v2.1.0","v2.1.1","v2.2.0","v2.3.0","v2.4.0","v3.0.0","v3.1.0","v3.2.0","v3.2.1","v4.0.0","v4.1.0","v4.2.0","v4.2.2","v4.3.0","v5.0.0","v5.0.1","v5.1.0","v5.1.1","v5.1.2","v5.1.3","v5.2.0","v5.2.1","v5.3.0","v5.3.1","v5.3.2","v5.4.0","v5.4.1","v5.4.2","v5.4.3","v5.5.0","v5.5.1","v5.5.2"],"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"35"}]},{"events":[{"introduced":"0"},{"last_affected":"36"}]},{"events":[{"introduced":"0"},{"last_affected":"37"}]},{"events":[{"introduced":"0"},{"last_affected":"10.0"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-40188.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}