{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-17T02:16:50.092","vulnerabilities":[{"cve":{"id":"CVE-2021-22212","sourceIdentifier":"cve@gitlab.com","published":"2021-06-08T13:15:07.567","lastModified":"2024-11-21T05:49:43.237","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"ntpkeygen can generate keys that ntpd fails to parse. NTPsec 1.2.0 allows ntpkeygen to generate keys with '#' characters. ntpd then either pads, shortens the key, or fails to load these keys entirely, depending on the key type and the placement of the '#'. This results in the administrator not being able to use the keys as expected or the keys are shorter than expected and easier to brute-force, possibly resulting in MITM attacks between ntp clients and ntp servers. For short AES128 keys, ntpd generates a warning that it is padding them."},{"lang":"es","value":"ntpkeygen puede generar claves que ntpd no puede analizar. NTPsec versión 1.2.0 permite a ntpkeygen generar claves con caracteres \"#\". ntpd entonces rellena, acorta la clave, o comete un fallo al cargar estas claves por completo, dependiendo del tipo de clave y la colocación del \"#\". Esto hace que el administrador no pueda usar las claves como se esperaba o que las claves sean más cortas de lo esperado y más fáciles de forzar, resultando posiblemente en ataques MITM entre clientes ntp y servidores ntp. Para claves AES128 cortas, ntpd genera una advertencia de que las está rellenando"}],"metrics":{"cvssMetricV31":[{"source":"cve@gitlab.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N","baseScore":4.0,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"HIGH","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":0.3,"impactScore":3.6},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","baseScore":7.4,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":2.2,"impactScore":5.2}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:P/I:P/A:N","baseScore":5.8,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"NONE"},"baseSeverity":"MEDIUM","exploitabilityScore":8.6,"impactScore":4.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-327"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:ntpsec:ntpsec:1.2.0:*:*:*:*:*:*:*","matchCriteriaId":"7017EBAD-09C2-4FD3-9EE5-FF0C5861C788"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*","matchCriteriaId":"A930E247-0B43-43CB-98FF-6CE7B8189835"}]}]}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1955859","source":"cve@gitlab.com","tags":["Issue Tracking","Patch","Third Party Advisory"]},{"url":"https://gitlab.com/NTPsec/ntpsec/-/issues/699","source":"cve@gitlab.com","tags":["Issue Tracking","Patch","Third Party Advisory"]},{"url":"https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22212.json","source":"cve@gitlab.com","tags":["Third Party Advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3GIT2HYL5BQXPGKI6ZDNG473IEQ5WQF2/","source":"cve@gitlab.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1955859","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Patch","Third Party Advisory"]},{"url":"https://gitlab.com/NTPsec/ntpsec/-/issues/699","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Patch","Third Party Advisory"]},{"url":"https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22212.json","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3GIT2HYL5BQXPGKI6ZDNG473IEQ5WQF2/","source":"af854a3a-2127-422b-91ae-364da2661108"}]}}]}