{"id":"CVE-2019-3814","details":"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.","modified":"2026-04-16T04:36:06.353143638Z","published":"2019-03-27T13:29:01.337Z","related":["SUSE-SU-2019:0414-1","SUSE-SU-2019:0900-1","openSUSE-SU-2019:0243-1","openSUSE-SU-2024:10726-1","openSUSE-SU-2025:14715-1"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4XLI55NGRDTGMVOPYFCPPFNPA5VKYSSY/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QHFZ5OWRIZGIWZJ5PTNVWWZNLLNH4XYS/"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/201904-19"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00067.html"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:3467"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3814"},{"type":"EVIDENCE","url":"https://www.dovecot.org/list/dovecot/2019-February/114575.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/dovecot/core","events":[{"introduced":"0"},{"fixed":"5d621cf65a8ebdc30b8b329869d3682b1e1b635d"},{"introduced":"c8b89eb9968980589904a58e8bd72fc8c00039be"},{"fixed":"f79e8e7e4d1cf4d7ca177a81f2061df8ee416848"}],"database_specific":{"versions":[{"introduced":"1.1.0"},{"fixed":"2.2.36.1"},{"introduced":"2.3.0"},{"fixed":"2.3.4.1"}]}}],"versions":["1.1.alpha1","1.1.alpha2","1.1.alpha4","1.1.alpha5","1.1.alpha6","1.1.beta1","1.1.beta10","1.1.beta11","1.1.beta12","1.1.beta13","1.1.beta14","1.1.beta16","1.1.beta2","1.1.beta3","1.1.beta4","1.1.beta5","1.1.beta6","1.1.beta8","1.1.beta9","1.1.rc1","1.1.rc2","1.1.rc3","1.2.alpha1","1.2.alpha2","1.2.alpha3","1.2.alpha4","1.2.alpha5","1.2.beta1","1.2.beta2","1.2.beta3","1.2.beta4","1.2.rc1","2.0.0","2.0.1","2.0.2","2.0.3","2.0.4","2.0.5","2.0.6","2.0.7","2.0.8","2.0.alpha1","2.0.alpha2","2.0.alpha3","2.0.beta1","2.0.beta2","2.0.beta3","2.0.beta4","2.0.beta5","2.0.beta6","2.0.rc1","2.0.rc2","2.0.rc3","2.0.rc4","2.0.rc5","2.0.rc6","2.1.alpha1","2.1.alpha2","2.1.beta1","2.1.rc1","2.1.rc2","2.1.rc3","2.1.rc4","2.1.rc5","2.1.rc6","2.2.0","2.2.1","2.2.10","2.2.11","2.2.12","2.2.13","2.2.13.rc1","2.2.14","2.2.14.rc1","2.2.15","2.2.16","2.2.16.rc1","2.2.17","2.2.17.rc1","2.2.17.rc2","2.2.18","2.2.19","2.2.19.rc1","2.2.19.rc2","2.2.2","2.2.20","2.2.20.rc1","2.2.3","2.2.36","2.2.36.rc1","2.2.4","2.2.5","2.2.6","2.2.7","2.2.8","2.2.9","2.2.alpha1","2.2.beta1","2.2.beta2","2.2.rc1","2.2.rc2","2.2.rc3","2.2.rc4","2.2.rc5","2.2.rc6","2.2.rc7","2.3.4"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-3814.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"12.04"}]},{"events":[{"introduced":"0"},{"last_affected":"14.04"}]},{"events":[{"introduced":"0"},{"last_affected":"16.04"}]},{"events":[{"introduced":"0"},{"last_affected":"18.04"}]},{"events":[{"introduced":"0"},{"last_affected":"18.10"}]},{"events":[{"introduced":"0"},{"last_affected":"42.3"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"}]}