{"id":"CVE-2018-1110","aliases":["DEBIAN-CVE-2018-1110","EUVD-2018-11755","GHSA-gv92-3p38-6rrw","UBUNTU-CVE-2018-1110"],"status":"published","title":"A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial...","description":"A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial of service.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01243,"percentile":0.69438,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2021-03-30T01:55:31Z","modified":"2026-10-24T10:31:02Z","fixes":[{"ecosystem":"Debian:12","package":"knot-resolver","fixed_in":["2.3.0-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"knot-resolver","fixed_in":["2.3.0-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"knot-resolver","fixed_in":["2.3.0-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"knot-resolver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.0-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"knot-resolver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.0-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"knot-resolver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.0-1"}]}]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"knot-resolver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.0~beta2-123-g6134920-1","1.0.0~beta3-1","1.0.0~beta3-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"knot-resolver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.3-1","1.5.0-4","1.5.1-1","1.5.2-1","2.0.0-3","2.1.0-1","2.1.0-2","2.1.1-1","2.1.1-1ubuntu0.1~esm2"]}],"products":[{"vendor":"cz.nic","product":"knot-resolver"},{"vendor":"nic","product":"knot_resolver"}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1944328","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory","report"]},{"url":"https://www.knot-resolver.cz/2018-04-23-knot-resolver-2.3.0.html","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-1110"},{"url":"https://github.com/advisories/GHSA-gv92-3p38-6rrw"},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-1110","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2018-1110","tags":["report"]},{"url":"http://www.openwall.com/lists/oss-security/2018/04/23/2","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-1110","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-1110","description":"A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial of service.","status":"published","published":"2021-03-30T01:55:31Z","modified":"2024-08-05T03:51:48.661Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:35:08.701206Z"}],"euvd":[{"id":"EUVD-2018-11755","description":"A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial of service.","status":"published","published":"2021-03-30T01:55:31Z","modified":"2024-08-05T03:51:48Z","updated_at":"2026-11-03T02:40:16.874515Z"}],"ghsa":[{"id":"GHSA-gv92-3p38-6rrw","title":"A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial...","description":"A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial of service.","status":"published","published":"2022-05-24T17:45:40Z","modified":"2023-01-29T05:06:11Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:45:58.127346Z"}],"nvd":[{"id":"CVE-2018-1110","description":"A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial of service.","status":"published","published":"2021-03-30T02:15:14.75Z","modified":"2026-06-17T01:50:30Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:05:00.565712Z"}],"osv":[{"id":"CVE-2018-1110","description":"A flaw was found in knot-resolver before version 2.3.0. 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