{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "pocketmine/pocketmine-mp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": true,
    "github_reviewed_at": "2021-12-16T15:47:47Z",
    "nvd_published_at": null,
    "severity": "LOW"
  },
  "details": "### Impact\nOriginally reported in iTXTech/Genisys#1188\n\n```txt\nPotterHarry98\npotterharry98\n```\n\n`deop PotterHarry98`\n\nwill remove `potterharry98` from the ops.txt but not `PotterHarry98`.\n\nOperator permissions are checked using `Config-\u003eexists()` with `lowercase=true`, which will result in a match:\nhttps://github.com/pmmp/PocketMine-MP/blob/22bb1ce8e03dba57173debf0415390511d68e045/src/utils/Config.php#L449\n\nThis means that it\u0027s possible to make yourself impossible to de-op (using commands) by adding your name to ops.txt with uppercase letters.\n\n### Patches\n4d37b79ff7f9d9452e988387f97919a9a1c4954e\n\n### Workarounds\nThis can be easily addressed by removing the offending lines from ops.txt manually.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [pmmp/PocketMine-MP](https://github.com/pmmp/PocketMine-MP)\n* Email us at [team@pmmp.io](mailto:team@pmmp.io)\n",
  "id": "GHSA-j5qg-w9jg-3wg3",
  "modified": "2021-12-16T15:47:47Z",
  "published": "2021-12-16T18:53:57Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-j5qg-w9jg-3wg3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/iTXTech/Genisys/issues/1188"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pmmp/PocketMine-MP/commit/4d37b79ff7f9d9452e988387f97919a9a1c4954e"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/pmmp/PocketMine-MP"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pmmp/PocketMine-MP/blob/4.0.3/changelogs/4.0.md#403"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Inability to de-op players if listed in ops.txt with non-lowercase letters"
}