{"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":"2026-03-20T11:30:10.785779Z","published":"2019-03-27T13:29:01.337Z","related":["MGASA-2019-0072","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/QHFZ5OWRIZGIWZJ5PTNVWWZNLLNH4XYS/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4XLI55NGRDTGMVOPYFCPPFNPA5VKYSSY/"},{"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"}]}}],"database_specific":{"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"}]}],"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-3814.json"}}],"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"}]}