ubuntu-cve-2020-37248
Vulnerability from osv_ubuntu
Published
2026-06-08 16:16
Modified
2026-06-11 12:41
Summary
Details

OfflineIMAP before 8.0.3 trusts the server with their STARTTLS capability prior to authentication, which allows STRIPTLS/man-in-the-middle attacks, taking over the connection and extracting account credentials in cleartext.

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

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "offlineimap",
            "binary_version": "7.3.3+dfsg1-1+0.0~git20211018.e64c254+dfsg-1"
          },
          {
            "binary_name": "offlineimap3",
            "binary_version": "0.0~git20211018.e64c254+dfsg-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "offlineimap3",
        "purl": "pkg:deb/ubuntu/offlineimap3@0.0~git20211018.e64c254+dfsg-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0~git20210225.1e7ef9e+dfsg-4",
        "0.0~git20211018.e64c254+dfsg-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "offlineimap",
            "binary_version": "7.3.3+dfsg1-1+0.0~git20231218.d29a4dc+dfsg-3ubuntu1"
          },
          {
            "binary_name": "offlineimap3",
            "binary_version": "0.0~git20231218.d29a4dc+dfsg-3ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "offlineimap3",
        "purl": "pkg:deb/ubuntu/offlineimap3@0.0~git20231218.d29a4dc+dfsg-3ubuntu1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0~git20230519.c9f44ad+dfsg-1",
        "0.0~git20231201.77e70ed+dfsg-1",
        "0.0~git20231218.d29a4dc+dfsg-3ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "offlineimap",
            "binary_version": "7.3.3+dfsg1-1+0.0~git20240826.db34745+dfsg-2ubuntu1"
          },
          {
            "binary_name": "offlineimap3",
            "binary_version": "0.0~git20240826.db34745+dfsg-2ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "offlineimap3",
        "purl": "pkg:deb/ubuntu/offlineimap3@0.0~git20240826.db34745+dfsg-2ubuntu1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0~git20240826.db34745+dfsg-2ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "offlineimap",
            "binary_version": "7.3.3+dfsg1-1+0.0~git20240826.db34745+dfsg-2ubuntu2"
          },
          {
            "binary_name": "offlineimap3",
            "binary_version": "0.0~git20240826.db34745+dfsg-2ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "offlineimap3",
        "purl": "pkg:deb/ubuntu/offlineimap3@0.0~git20240826.db34745+dfsg-2ubuntu2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0~git20240826.db34745+dfsg-2ubuntu1",
        "0.0~git20240826.db34745+dfsg-2ubuntu2"
      ]
    }
  ],
  "aliases": [],
  "details": "OfflineIMAP before 8.0.3 trusts the server with their STARTTLS capability prior to authentication, which allows STRIPTLS/man-in-the-middle attacks, taking over the connection and extracting account credentials in cleartext.",
  "id": "UBUNTU-CVE-2020-37248",
  "modified": "2026-06-11T12:41:55Z",
  "published": "2026-06-08T16:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-37248"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-37248"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/OfflineIMAP/offlineimap3/issues/222"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/OfflineIMAP/offlineimap/issues/669"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/OfflineIMAP/offlineimap3/commit/46505c53ef995455d66c685f9ec3ff6ea93dbb74"
    },
    {
      "type": "REPORT",
      "url": "https://pypi.org/project/offlineimap/#history"
    },
    {
      "type": "REPORT",
      "url": "http://www.openwall.com/lists/oss-security/2026/06/08/3"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2020-37248"
  ]
}



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