ghsa-q9h8-gpw5-c95c
Vulnerability from github
Published
2022-05-24 16:43
Modified
2023-08-01 23:30
Severity ?
5.9 (Medium) - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Summary
Matrix Sydent mishandles emails
Details

util/emailutils.py in Matrix Sydent before 1.0.2 mishandles registration restrictions that are based on e-mail domain, if the allowed_local_3pids option is enabled. This occurs because of potentially unwanted behavior in Python, in which an email.utils.parseaddr call on user@bad.example.net@good.example.com returns the user@bad.example.net substring.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "matrix-sydent"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2019-11340"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-08-01T23:30:01Z",
    "nvd_published_at": "2019-04-19T14:29:00Z",
    "severity": "MODERATE"
  },
  "details": "util/emailutils.py in Matrix Sydent before 1.0.2 mishandles registration restrictions that are based on e-mail domain, if the allowed_local_3pids option is enabled. This occurs because of potentially unwanted behavior in Python, in which an email.utils.parseaddr call on user@bad.example.net@good.example.com returns the user@bad.example.net substring.",
  "id": "GHSA-q9h8-gpw5-c95c",
  "modified": "2023-08-01T23:30:01Z",
  "published": "2022-05-24T16:43:57Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-11340"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/sydent/commit/4e1cfff53429c49c87d5c457a18ed435520044fc"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/sydent/compare/7c002cd...09278fb"
    },
    {
      "type": "WEB",
      "url": "https://matrix.org/blog/2019/04/18/security-update-sydent-1-0-2"
    },
    {
      "type": "WEB",
      "url": "https://twitter.com/matrixdotorg/status/1118934335963500545"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Matrix Sydent mishandles emails"
}


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