{"id":"UBUNTU-CVE-2018-10920","details":"Improper input validation bug in DNS resolver component of Knot Resolver before 2.4.1 allows remote attacker to poison cache.","modified":"2026-04-22T11:41:20.426210Z","published":"2018-08-02T13:29:00Z","upstream":["CVE-2018-10920"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-10920"},{"type":"REPORT","url":"https://www.knot-resolver.cz/2018-08-02-knot-resolver-2.4.1.html"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10920"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-10920"}],"affected":[{"package":{"name":"knot-resolver","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/knot-resolver@1.0.0~beta3-1ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial"},"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"],"ecosystem_specific":{"binaries":[{"binary_name":"knot-resolver","binary_version":"1.0.0~beta3-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-10920.json"}},{"package":{"name":"knot-resolver","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/knot-resolver@2.1.1-1ubuntu0.1~esm2?arch=source&distro=esm-apps/bionic"},"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"],"ecosystem_specific":{"binaries":[{"binary_name":"knot-resolver","binary_version":"2.1.1-1ubuntu0.1~esm2"},{"binary_name":"knot-resolver-module-http","binary_version":"2.1.1-1ubuntu0.1~esm2"},{"binary_version":"2.1.1-1ubuntu0.1~esm2","binary_name":"libkres6"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-10920.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}