{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"state":"PUBLISHED","cveId":"CVE-2020-12667","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","assignerShortName":"mitre","dateUpdated":"2024-08-04T12:04:22.538Z","dateReserved":"2020-05-05T00:00:00.000Z","datePublished":"2020-05-19T00:00:00.000Z"},"containers":{"cna":{"providerMetadata":{"orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre","dateUpdated":"2024-04-26T07:06:02.945Z"},"descriptions":[{"lang":"en","value":"Knot Resolver before 5.1.1 allows traffic amplification via a crafted DNS answer from an attacker-controlled server, aka an \"NXNSAttack\" issue. This is triggered by random subdomains in the NSDNAME in NS records."}],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":[{"url":"https://en.blog.nic.cz/2020/05/19/nxnsattack-upgrade-resolvers-to-stop-new-kind-of-random-subdomain-attack/"},{"url":"https://www.knot-resolver.cz/2020-05-19-knot-resolver-5.1.1.html"},{"name":"[oss-security] 20200519 [CVE-2020-12667] Knot Resolver 5.1.1 NXNSAttack mitigation","tags":["mailing-list"],"url":"http://www.openwall.com/lists/oss-security/2020/05/19/2"},{"url":"http://cyber-security-group.cs.tau.ac.il/#"},{"name":"FEDORA-2020-bf68101ad3","tags":["vendor-advisory"],"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/76Y4FITMOH6RVPWAANGV7NB2ZHPJJGDQ/"},{"name":"[debian-lts-announce] 20240426 [SECURITY] [DLA 3795-1] knot-resolver security update","tags":["mailing-list"],"url":"https://lists.debian.org/debian-lts-announce/2024/04/msg00017.html"}],"problemTypes":[{"descriptions":[{"type":"text","lang":"en","description":"n/a"}]}],"datePublic":"2020-05-19T00:00:00.000Z"},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2020-12667","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-04-26T17:02:23.525566Z"}}}],"affected":[{"cpes":["cpe:2.3:a:nic:knot_resolver:-:*:*:*:*:*:*:*"],"vendor":"nic","product":"knot_resolver","versions":[{"status":"affected","version":"-"}],"defaultStatus":"unknown"}],"problemTypes":[{"descriptions":[{"lang":"en","type":"CWE","cweId":"CWE-400","description":"CWE-400 Uncontrolled Resource Consumption"}]}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-06-04T17:12:29.314Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-04T12:04:22.538Z"},"title":"CVE Program Container","references":[{"url":"https://en.blog.nic.cz/2020/05/19/nxnsattack-upgrade-resolvers-to-stop-new-kind-of-random-subdomain-attack/","tags":["x_transferred"]},{"url":"https://www.knot-resolver.cz/2020-05-19-knot-resolver-5.1.1.html","tags":["x_transferred"]},{"name":"[oss-security] 20200519 [CVE-2020-12667] Knot Resolver 5.1.1 NXNSAttack mitigation","tags":["mailing-list","x_transferred"],"url":"http://www.openwall.com/lists/oss-security/2020/05/19/2"},{"url":"http://cyber-security-group.cs.tau.ac.il/#","tags":["x_transferred"]},{"name":"FEDORA-2020-bf68101ad3","tags":["vendor-advisory","x_transferred"],"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/76Y4FITMOH6RVPWAANGV7NB2ZHPJJGDQ/"},{"name":"[debian-lts-announce] 20240426 [SECURITY] [DLA 3795-1] knot-resolver security update","tags":["mailing-list","x_transferred"],"url":"https://lists.debian.org/debian-lts-announce/2024/04/msg00017.html"}]}]}}