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)
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
7.7 (High)
CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "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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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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