ubuntu-cve-2021-39272
Vulnerability from osv_ubuntu
Published
2021-08-30 06:15
Modified
2025-10-24 04:50
Summary
Details

Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a certain situation with IMAP and PREAUTH.

Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "fetchmail",
            "binary_version": "6.3.26-2"
          },
          {
            "binary_name": "fetchmailconf",
            "binary_version": "6.3.26-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "fetchmail",
        "purl": "pkg:deb/ubuntu/fetchmail@6.3.26-2?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.3.26-1",
        "6.3.26-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "fetchmail",
            "binary_version": "6.3.26-3ubuntu0.1~18.04.1"
          },
          {
            "binary_name": "fetchmailconf",
            "binary_version": "6.3.26-3ubuntu0.1~18.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "fetchmail",
        "purl": "pkg:deb/ubuntu/fetchmail@6.3.26-3ubuntu0.1~18.04.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.3.26-3",
        "6.3.26-3build1",
        "6.3.26-3ubuntu0.1~18.04.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "fetchmail",
            "binary_version": "6.4.2-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "fetchmail",
        "purl": "pkg:deb/ubuntu/fetchmail@6.4.2-2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.4.0~rc4-1ubuntu1",
        "6.4.1-1ubuntu1",
        "6.4.2-2"
      ]
    }
  ],
  "aliases": [],
  "details": "Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a certain situation with IMAP and PREAUTH.",
  "id": "UBUNTU-CVE-2021-39272",
  "modified": "2025-10-24T04:50:29Z",
  "published": "2021-08-30T06:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-39272"
    },
    {
      "type": "REPORT",
      "url": "https://www.fetchmail.info/fetchmail-SA-2021-02.txt"
    },
    {
      "type": "REPORT",
      "url": "https://www.openwall.com/lists/oss-security/2021/08/27/3"
    },
    {
      "type": "REPORT",
      "url": "https://nostarttls.secvuln.info/"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-39272"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-39272"
  ]
}



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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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