usn-3258-2
Vulnerability from osv_ubuntu
Published
2017-04-11 19:41
Modified
2026-04-22 07:36
Summary
dovecot regression
Details

USN-3258-1 intended to fix a vulnerability in Dovecot. Further investigation revealed that only Dovecot versions 2.2.26 and newer were affected by the vulnerability. Additionally, the change introduced a regression when Dovecot was configured to use the "dict" authentication database. This update reverts the change. We apologize for the inconvenience.

Original advisory details:

It was discovered that Dovecot incorrectly handled some usernames. An attacker could possibly use this issue to cause Dovecot to hang or crash, resulting in a denial of service.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2017-2669",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "dovecot-core",
            "binary_version": "1:2.2.22-1ubuntu2.4"
          },
          {
            "binary_name": "dovecot-gssapi",
            "binary_version": "1:2.2.22-1ubuntu2.4"
          },
          {
            "binary_name": "dovecot-imapd",
            "binary_version": "1:2.2.22-1ubuntu2.4"
          },
          {
            "binary_name": "dovecot-ldap",
            "binary_version": "1:2.2.22-1ubuntu2.4"
          },
          {
            "binary_name": "dovecot-lmtpd",
            "binary_version": "1:2.2.22-1ubuntu2.4"
          },
          {
            "binary_name": "dovecot-lucene",
            "binary_version": "1:2.2.22-1ubuntu2.4"
          },
          {
            "binary_name": "dovecot-managesieved",
            "binary_version": "1:2.2.22-1ubuntu2.4"
          },
          {
            "binary_name": "dovecot-mysql",
            "binary_version": "1:2.2.22-1ubuntu2.4"
          },
          {
            "binary_name": "dovecot-pgsql",
            "binary_version": "1:2.2.22-1ubuntu2.4"
          },
          {
            "binary_name": "dovecot-pop3d",
            "binary_version": "1:2.2.22-1ubuntu2.4"
          },
          {
            "binary_name": "dovecot-sieve",
            "binary_version": "1:2.2.22-1ubuntu2.4"
          },
          {
            "binary_name": "dovecot-solr",
            "binary_version": "1:2.2.22-1ubuntu2.4"
          },
          {
            "binary_name": "dovecot-sqlite",
            "binary_version": "1:2.2.22-1ubuntu2.4"
          },
          {
            "binary_name": "mail-stack-delivery",
            "binary_version": "1:2.2.22-1ubuntu2.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "dovecot",
        "purl": "pkg:deb/ubuntu/dovecot@1:2.2.22-1ubuntu2.4?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:2.2.22-1ubuntu2.4"
            }
          ],
          "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"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-3258-1 intended to fix a vulnerability in Dovecot. Further investigation\nrevealed that only Dovecot versions 2.2.26 and newer were affected by the\nvulnerability. Additionally, the change introduced a regression when Dovecot\nwas configured to use the \"dict\" authentication database. This update reverts\nthe change. We apologize for the inconvenience.\n\nOriginal advisory details:\n\n It was discovered that Dovecot incorrectly handled some usernames. An attacker\n could possibly use this issue to cause Dovecot to hang or crash, resulting in a\n denial of service.\n",
  "id": "USN-3258-2",
  "modified": "2026-04-22T07:36:34Z",
  "published": "2017-04-11T19:41:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3258-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-2669"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "dovecot regression",
  "upstream": [
    "UBUNTU-CVE-2017-2669"
  ]
}



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