{"affected":[{"affectedData":[{"product":"dovecot","vendor":"dovecot","versions":[{"status":"affected","version":"2.2.36.1"},{"status":"affected","version":"2.3.4.1"}]}],"source":"secalert@redhat.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*","matchCriteriaId":"B7EC4FD5-8BCE-4412-B8F6-53F4DD0D6CE7","versionEndExcluding":"2.2.36.1","versionStartIncluding":"1.1.0","vulnerable":true},{"criteria":"cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*","matchCriteriaId":"4C44A57B-1823-40EE-A24F-44144C505859","versionEndExcluding":"2.3.4.1","versionStartIncluding":"2.3.0","vulnerable":true}],"negate":false,"operator":"OR"}]},{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*","matchCriteriaId":"8D305F7A-D159-4716-AB26-5E38BB5CD991","vulnerable":true},{"criteria":"cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*","matchCriteriaId":"B5A6F2F3-4894-4392-8296-3B8DD2679084","vulnerable":true},{"criteria":"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*","matchCriteriaId":"F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B","vulnerable":true},{"criteria":"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*","matchCriteriaId":"23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D","vulnerable":true},{"criteria":"cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*","matchCriteriaId":"07C312A0-CD2C-4B9C-B064-6409B25C278F","vulnerable":true}],"negate":false,"operator":"OR"}]},{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*","matchCriteriaId":"5F65DAB0-3DAD-49FF-BC73-3581CC3D5BF3","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"It was discovered that Dovecot before versions 2.2.36.1 and 2.3.4.1 incorrectly handled client certificates. A remote attacker in possession of a valid certificate with an empty username field could possibly use this issue to impersonate other users."},{"lang":"es","value":"Se ha descubierto que Dovecot, en versiones anteriores a la 2.2.36.1 y 2.3.4.1, gestiona de manera incorrecta los certificados del cliente. Un atacante remoto en posesión de un certificado válido con un campo \"username\" vacío podría emplear este problema para suplantar a otros usuarios."}],"id":"CVE-2019-3814","lastModified":"2026-06-17T02:35:38.617","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"MEDIUM","cvssData":{"accessComplexity":"MEDIUM","accessVector":"NETWORK","authentication":"SINGLE","availabilityImpact":"NONE","baseScore":4.9,"confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","vectorString":"AV:N/AC:M/Au:S/C:P/I:P/A:N","version":"2.0"},"exploitabilityScore":6.8,"impactScore":4.9,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":false}],"cvssMetricV30":[{"cvssData":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N","version":"3.0"},"exploitabilityScore":1.3,"impactScore":5.8,"source":"secalert@redhat.com","type":"Secondary"},{"cvssData":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.8,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.0"},"exploitabilityScore":1.6,"impactScore":5.2,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2019-03-27T13:29:01.337","references":[{"source":"secalert@redhat.com","tags":["Mailing List","Third Party Advisory"],"url":"http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00067.html"},{"source":"secalert@redhat.com","url":"https://access.redhat.com/errata/RHSA-2019:3467"},{"source":"secalert@redhat.com","tags":["Issue Tracking","Release Notes","Third Party Advisory"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3814"},{"source":"secalert@redhat.com","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4XLI55NGRDTGMVOPYFCPPFNPA5VKYSSY/"},{"source":"secalert@redhat.com","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QHFZ5OWRIZGIWZJ5PTNVWWZNLLNH4XYS/"},{"source":"secalert@redhat.com","url":"https://security.gentoo.org/glsa/201904-19"},{"source":"secalert@redhat.com","tags":["Exploit","Mailing List","Vendor Advisory"],"url":"https://www.dovecot.org/list/dovecot/2019-February/114575.html"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"],"url":"http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00067.html"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://access.redhat.com/errata/RHSA-2019:3467"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Release Notes","Third Party Advisory"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3814"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4XLI55NGRDTGMVOPYFCPPFNPA5VKYSSY/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QHFZ5OWRIZGIWZJ5PTNVWWZNLLNH4XYS/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://security.gentoo.org/glsa/201904-19"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Mailing List","Vendor Advisory"],"url":"https://www.dovecot.org/list/dovecot/2019-February/114575.html"}],"sourceIdentifier":"secalert@redhat.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-295"}],"source":"secalert@redhat.com","type":"Secondary"},{"description":[{"lang":"en","value":"CWE-295"}],"source":"nvd@nist.gov","type":"Primary"}]}