{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2019-19269","sourceIdentifier":"cve@mitre.org","published":"2019-11-30T23:15:18.223","lastModified":"2026-06-17T02:26:24.153","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"An issue was discovered in tls_verify_crl in ProFTPD through 1.3.6b. A dereference of a NULL pointer may occur. This pointer is returned by the OpenSSL sk_X509_REVOKED_value() function when encountering an empty CRL installed by a system administrator. The dereference occurs when validating the certificate of a client connecting to the server in a TLS client/server mutual-authentication setup."},{"lang":"es","value":"Se detectó un problema en tls_verify_crl en ProFTPD versiones hasta 1.3.6b. Se puede presentar una desreferencia de un puntero NULL. Este puntero es devuelto por la función sk_X509_REVOKED_value() de OpenSSL cuando encuentra una CRL vacía instalada mediante un administrador del sistema. La desreferencia se presenta cuando se comprueba el certificado de un cliente que conecta al servidor en una configuración de autenticación mutua cliente/servidor TLS."}],"affected":[{"source":"cve@mitre.org","affectedData":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","baseScore":4.9,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.2,"impactScore":3.6}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:S/C:N/I:N/A:P","baseScore":4.0,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"SINGLE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":8.0,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-476"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:proftpd:proftpd:*:*:*:*:*:*:*:*","versionEndIncluding":"1.3.5e","matchCriteriaId":"9489E448-D5B8-4A38-99CE-C472EA881D69"},{"vulnerable":true,"criteria":"cpe:2.3:a:proftpd:proftpd:1.3.6:-:*:*:*:*:*:*","matchCriteriaId":"47526BA5-3955-43B3-8EA4-5C29DDA3F9C7"},{"vulnerable":true,"criteria":"cpe:2.3:a:proftpd:proftpd:1.3.6:alpha:*:*:*:*:*:*","matchCriteriaId":"7FC30FC2-1DEB-4CA7-922C-EA94E895E978"},{"vulnerable":true,"criteria":"cpe:2.3:a:proftpd:proftpd:1.3.6:beta:*:*:*:*:*:*","matchCriteriaId":"1F41C633-216D-4A8C-BAA6-940452751735"},{"vulnerable":true,"criteria":"cpe:2.3:a:proftpd:proftpd:1.3.6:rc1:*:*:*:*:*:*","matchCriteriaId":"B6475817-8CC7-4C0C-A9A6-E58189852DA2"},{"vulnerable":true,"criteria":"cpe:2.3:a:proftpd:proftpd:1.3.6:rc2:*:*:*:*:*:*","matchCriteriaId":"84CB8C28-C432-4FD4-9B76-CA6C2C8824D9"},{"vulnerable":true,"criteria":"cpe:2.3:a:proftpd:proftpd:1.3.6:rc3:*:*:*:*:*:*","matchCriteriaId":"21D053B1-AFDE-4859-ACFB-C51DC28EAA04"},{"vulnerable":true,"criteria":"cpe:2.3:a:proftpd:proftpd:1.3.6:rc4:*:*:*:*:*:*","matchCriteriaId":"AA9A0785-FF92-4AB0-8F42-9060FB24120E"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*","matchCriteriaId":"97A4B8DF-58DA-4AB6-A1F9-331B36409BA3"},{"vulnerable":true,"criteria":"cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*","matchCriteriaId":"80F0FA5D-8D3B-4C0E-81E2-87998286AF33"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*","matchCriteriaId":"C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43"}]}]}],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00009.html","source":"cve@mitre.org"},{"url":"https://github.com/proftpd/proftpd/issues/861","source":"cve@mitre.org","tags":["Patch","Third 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