{
  "schema_version": "1.4.0",
  "id": "GHSA-pw4v-gr34-2553",
  "modified": "2024-09-24T15:42:42Z",
  "published": "2021-04-16T19:53:37Z",
  "aliases": [
    "CVE-2021-29433"
  ],
  "summary": "Sydent DoS (via resource exhaustion) due to improper input validation",
  "details": "### Impact\n\nMissing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk space and memory leading to resource exhaustion.\n\n### Patches\n\nFixed by 3175fd3.\n\n### For more information\n\nIf you have any questions or comments about this advisory, email us at security@matrix.org.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
    },
    {
      "type": "CVSS_V4",
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "matrix-sydent"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.3.0"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/sydent/security/advisories/GHSA-pw4v-gr34-2553"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-29433"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/sydent/commit/3175fd358ebc2c310eab7a3dbf296ce2bd54c1da"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/matrix-org/sydent"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/matrix-sydent/PYSEC-2021-24.yaml"
    },
    {
      "type": "WEB",
      "url": "https://pypi.org/project/matrix-sydent"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-400"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2021-04-15T18:45:07Z",
    "nvd_published_at": "2021-04-15T18:15:00Z"
  }
}