Minio Privilege Escalation on Windows via Path separator manipulation

{
  "id": "7093696b1bfac620ab153a7e8a8a2745ca78116817e7f68495159f0bb462edb2",
  "url": "https://osv.dev/vulnerability/BIT-minio-2023-28433",
  "method": "structured",
  "payload": {
    "kind": "withdrawal",
    "title": "Minio Privilege Escalation on Windows via Path separator manipulation",
    "summary": "Minio is a Multi-Cloud Object Storage framework. All users on Windows prior to version RELEASE.2023-03-20T20-16-18Z are impacted. MinIO fails to filter the `\\` character, which allows for arbitrary object placement across buckets. As a result, a user with low privileges, such as an access key, service account, or STS credential, which only has permission to `PutObject` in a specific bucket, can create an admin user. This issue is patched in RELEASE.2023-03-20T20-16-18Z. There are no known workarounds.",
    "evidence": "osv:BIT-minio-2023-28433",
    "products": [
      {
        "name": {
          "value": "minio",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2023.03.20",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "BIT-minio-2023-28433",
      "aliases": [
        "BIT-minio-2023-28433"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2023.03.20"
                }
              ]
            }
          ],
          "package": {
            "name": "minio",
            "purl": "pkg:bitnami/minio",
            "ecosystem": "Bitnami"
          },
          "severity": [
            {
              "type": "CVSS_V3",
              "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
            }
          ],
          "database_specific": {
            "source": "https://github.com/bitnami/vulndb/tree/main/data/minio/BIT-minio-2023-28433.json"
          }
        }
      ],
      "modified": "2026-10-08T08:11:02.807647899Z",
      "provider": "osv",
      "references": [
        "https://github.com/minio/minio/commit/8d6558b23649f613414c8527b58973fbdfa4d1b8",
        "https://github.com/minio/minio/commit/b3c54ec81e0a06392abfb3a1ffcdc80c6fbf6ebc",
        "https://github.com/minio/minio/releases/tag/RELEASE.2023-03-20T20-16-18Z",
        "https://github.com/minio/minio/security/advisories/GHSA-w23q-4hw3-2pp6",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-28433"
      ],
      "provider_metadata": {
        "cpes": [
          "cpe:2.3:a:minio:minio:*:*:*:*:*:*:*:*"
        ],
        "severity": "High"
      }
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 98785,
  "published_at": "2024-03-06T10:56:28.094+00:00"
}