{"id":"UBUNTU-CVE-2019-10190","details":"A vulnerability was discovered in DNS resolver component of knot resolver through version 3.2.0 before 4.1.0 which allows remote attackers to bypass DNSSEC validation for non-existence answer. NXDOMAIN answer would get passed through to the client even if its DNSSEC validation failed, instead of sending a SERVFAIL packet. Caching is not affected by this particular bug but see CVE-2019-10191.","modified":"2026-02-04T02:46:58.020781Z","published":"2019-07-10T12:00:00Z","related":["USN-7047-1"],"upstream":["CVE-2019-10190"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-10190"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-10190"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7047-1"}],"affected":[{"package":{"name":"knot-resolver","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/knot-resolver@3.2.1-3ubuntu2.2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.1-3ubuntu2.2"}]}],"versions":["3.2.1-3","3.2.1-3ubuntu1","3.2.1-3ubuntu2","3.2.1-3ubuntu2.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"knot-resolver","binary_version":"3.2.1-3ubuntu2.2"},{"binary_name":"knot-resolver-module-http","binary_version":"3.2.1-3ubuntu2.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-10190.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}