ubuntu-cve-2019-3814
Vulnerability from osv_ubuntu
Published
2019-02-05 13:00
Modified
2026-04-22 07:38
Summary
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.
Severity
6.8 (Medium)
7.7 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "dovecot-core",
"binary_version": "1:2.2.9-1ubuntu2.5"
},
{
"binary_name": "dovecot-gssapi",
"binary_version": "1:2.2.9-1ubuntu2.5"
},
{
"binary_name": "dovecot-imapd",
"binary_version": "1:2.2.9-1ubuntu2.5"
},
{
"binary_name": "dovecot-ldap",
"binary_version": "1:2.2.9-1ubuntu2.5"
},
{
"binary_name": "dovecot-lmtpd",
"binary_version": "1:2.2.9-1ubuntu2.5"
},
{
"binary_name": "dovecot-managesieved",
"binary_version": "1:2.2.9-1ubuntu2.5"
},
{
"binary_name": "dovecot-mysql",
"binary_version": "1:2.2.9-1ubuntu2.5"
},
{
"binary_name": "dovecot-pgsql",
"binary_version": "1:2.2.9-1ubuntu2.5"
},
{
"binary_name": "dovecot-pop3d",
"binary_version": "1:2.2.9-1ubuntu2.5"
},
{
"binary_name": "dovecot-sieve",
"binary_version": "1:2.2.9-1ubuntu2.5"
},
{
"binary_name": "dovecot-solr",
"binary_version": "1:2.2.9-1ubuntu2.5"
},
{
"binary_name": "dovecot-sqlite",
"binary_version": "1:2.2.9-1ubuntu2.5"
},
{
"binary_name": "mail-stack-delivery",
"binary_version": "1:2.2.9-1ubuntu2.5"
}
]
},
"package": {
"ecosystem": "Ubuntu:14.04:LTS",
"name": "dovecot",
"purl": "pkg:deb/ubuntu/dovecot@1:2.2.9-1ubuntu2.5?arch=source\u0026distro=trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.2.9-1ubuntu2.5"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:2.1.7-7ubuntu3",
"1:2.2.9-1ubuntu1",
"1:2.2.9-1ubuntu2",
"1:2.2.9-1ubuntu2.1",
"1:2.2.9-1ubuntu2.3",
"1:2.2.9-1ubuntu2.4"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "dovecot-core",
"binary_version": "1:2.2.22-1ubuntu2.9"
},
{
"binary_name": "dovecot-gssapi",
"binary_version": "1:2.2.22-1ubuntu2.9"
},
{
"binary_name": "dovecot-imapd",
"binary_version": "1:2.2.22-1ubuntu2.9"
},
{
"binary_name": "dovecot-ldap",
"binary_version": "1:2.2.22-1ubuntu2.9"
},
{
"binary_name": "dovecot-lmtpd",
"binary_version": "1:2.2.22-1ubuntu2.9"
},
{
"binary_name": "dovecot-lucene",
"binary_version": "1:2.2.22-1ubuntu2.9"
},
{
"binary_name": "dovecot-managesieved",
"binary_version": "1:2.2.22-1ubuntu2.9"
},
{
"binary_name": "dovecot-mysql",
"binary_version": "1:2.2.22-1ubuntu2.9"
},
{
"binary_name": "dovecot-pgsql",
"binary_version": "1:2.2.22-1ubuntu2.9"
},
{
"binary_name": "dovecot-pop3d",
"binary_version": "1:2.2.22-1ubuntu2.9"
},
{
"binary_name": "dovecot-sieve",
"binary_version": "1:2.2.22-1ubuntu2.9"
},
{
"binary_name": "dovecot-solr",
"binary_version": "1:2.2.22-1ubuntu2.9"
},
{
"binary_name": "dovecot-sqlite",
"binary_version": "1:2.2.22-1ubuntu2.9"
},
{
"binary_name": "mail-stack-delivery",
"binary_version": "1:2.2.22-1ubuntu2.9"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "dovecot",
"purl": "pkg:deb/ubuntu/dovecot@1:2.2.22-1ubuntu2.9?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.2.22-1ubuntu2.9"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:2.2.18-2ubuntu2",
"1:2.2.22-1ubuntu1",
"1:2.2.22-1ubuntu2",
"1:2.2.22-1ubuntu2.1",
"1:2.2.22-1ubuntu2.2",
"1:2.2.22-1ubuntu2.3",
"1:2.2.22-1ubuntu2.4",
"1:2.2.22-1ubuntu2.6",
"1:2.2.22-1ubuntu2.7",
"1:2.2.22-1ubuntu2.8"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "dovecot-core",
"binary_version": "1:2.2.33.2-1ubuntu4.2"
},
{
"binary_name": "dovecot-gssapi",
"binary_version": "1:2.2.33.2-1ubuntu4.2"
},
{
"binary_name": "dovecot-imapd",
"binary_version": "1:2.2.33.2-1ubuntu4.2"
},
{
"binary_name": "dovecot-ldap",
"binary_version": "1:2.2.33.2-1ubuntu4.2"
},
{
"binary_name": "dovecot-lmtpd",
"binary_version": "1:2.2.33.2-1ubuntu4.2"
},
{
"binary_name": "dovecot-managesieved",
"binary_version": "1:2.2.33.2-1ubuntu4.2"
},
{
"binary_name": "dovecot-mysql",
"binary_version": "1:2.2.33.2-1ubuntu4.2"
},
{
"binary_name": "dovecot-pgsql",
"binary_version": "1:2.2.33.2-1ubuntu4.2"
},
{
"binary_name": "dovecot-pop3d",
"binary_version": "1:2.2.33.2-1ubuntu4.2"
},
{
"binary_name": "dovecot-sieve",
"binary_version": "1:2.2.33.2-1ubuntu4.2"
},
{
"binary_name": "dovecot-solr",
"binary_version": "1:2.2.33.2-1ubuntu4.2"
},
{
"binary_name": "dovecot-sqlite",
"binary_version": "1:2.2.33.2-1ubuntu4.2"
},
{
"binary_name": "mail-stack-delivery",
"binary_version": "1:2.2.33.2-1ubuntu4.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "dovecot",
"purl": "pkg:deb/ubuntu/dovecot@1:2.2.33.2-1ubuntu4.2?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.2.33.2-1ubuntu4.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:2.2.27-3ubuntu1",
"1:2.2.33.2-1ubuntu1",
"1:2.2.33.2-1ubuntu2",
"1:2.2.33.2-1ubuntu3",
"1:2.2.33.2-1ubuntu4",
"1:2.2.33.2-1ubuntu4.1"
]
}
],
"aliases": [],
"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.",
"id": "UBUNTU-CVE-2019-3814",
"modified": "2026-04-22T07:38:51Z",
"published": "2019-02-05T13:00:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-3814"
},
{
"type": "REPORT",
"url": "https://www.dovecot.org/pipermail/dovecot/2019-February/114575.html"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-3881-1"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-3881-2"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2019-3814"
}
],
"related": [
"USN-3881-1",
"USN-3881-2"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2019-3814"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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