{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2019-11331","sourceIdentifier":"cve@mitre.org","published":"2019-04-18T22:29:00.517","lastModified":"2026-06-17T02:12:43.603","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"Network Time Protocol (NTP), as specified in RFC 5905, uses port 123 even for modes where a fixed port number is not required, which makes it easier for remote attackers to conduct off-path attacks."},{"lang":"es","value":"Network Time Protocol (NTP), tal y como se especifica en el RFC 5905, utiliza el puerto 123 incluso para los modos en los que no se requiere un número de puerto fijo, lo que facilita a los atacantes remotos la realización de ataques fuera de ruta."}],"affected":[{"source":"cve@mitre.org","affectedData":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]}],"metrics":{"cvssMetricV30":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.2,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:P/I:P/A:P","baseScore":6.8,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":8.6,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"NVD-CWE-noinfo"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:ntp:ntp:-:*:*:*:*:*:*:*","matchCriteriaId":"07C904EB-F926-42EC-8AE1-FC2A3BF4FD66"}]}]}],"references":[{"url":"http://www.securityfocus.com/bid/108010","source":"cve@mitre.org","tags":["Third Party Advisory"]},{"url":"https://support.f5.com/csp/article/K09940637","source":"cve@mitre.org"},{"url":"https://support.f5.com/csp/article/K09940637?utm_source=f5support\u0026amp%3Butm_medium=RSS","source":"cve@mitre.org"},{"url":"https://tools.ietf.org/html/draft-gont-ntp-port-randomization-00","source":"cve@mitre.org","tags":["Third Party Advisory"]},{"url":"http://www.securityfocus.com/bid/108010","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]},{"url":"https://support.f5.com/csp/article/K09940637","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.f5.com/csp/article/K09940637?utm_source=f5support\u0026amp%3Butm_medium=RSS","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://tools.ietf.org/html/draft-gont-ntp-port-randomization-00","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]}]}}