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{"affected_release": [{"advisory": "RHSA-2020:1062", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "dovecot-1:2.2.36-6.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-03-31T00:00:00Z"}, {"advisory": "RHSA-2019:3467", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "dovecot-1:2.2.36-10.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2019-11-05T00:00:00Z"}], "bugzilla": {"description": "dovecot: Improper certificate validation", "id": "1673415", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1673415"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.7", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N", "status": "verified"}, "cwe": "CWE-295", "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.", "It was discovered that Dovecot 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."], "mitigation": {"lang": "en:us", "value": "Attack can be migitated by having the certificates with proper Extended Key Usage, such as 'TLS Web Server' and 'TLS Web Server Client'. Also client-side certification authentication can be turned off using:\nauth_ssl_require_client_cert = no\nauth_ssl_username_from_cert = no"}, "name": "CVE-2019-3814", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Will not fix", "package_name": "dovecot", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Will not fix", "package_name": "dovecot", "product_name": "Red Hat Enterprise Linux 6"}], "public_date": "2019-02-05T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2019-3814\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-3814\nhttps://www.dovecot.org/list/dovecot/2019-February/114575.html"], "threat_severity": "Moderate"}