CVE-2019-3814

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.

• CWE-295
• CWE-295

• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00067.htmlMailing List, Third Party Advisory
• https://access.redhat.com/errata/RHSA-2019:3467
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3814Issue Tracking, Release Notes, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4XLI55NGRDTGMVOPYFCPPFNPA5VKYSSY/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QHFZ5OWRIZGIWZJ5PTNVWWZNLLNH4XYS/
• https://security.gentoo.org/glsa/201904-19
• https://www.dovecot.org/list/dovecot/2019-February/114575.htmlExploit, Mailing List, Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00067.htmlMailing List, Third Party Advisory
• https://access.redhat.com/errata/RHSA-2019:3467
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3814Issue Tracking, Release Notes, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4XLI55NGRDTGMVOPYFCPPFNPA5VKYSSY/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QHFZ5OWRIZGIWZJ5PTNVWWZNLLNH4XYS/
• https://security.gentoo.org/glsa/201904-19
• https://www.dovecot.org/list/dovecot/2019-February/114575.htmlExploit, Mailing List, Vendor Advisory

Published

Mar 27, 2019

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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