Bypassing readOnly policy by creating a temporary 'mc share upload' URL
MinIO is an open-source high performance object storage service and it is API compatible with Amazon S3 cloud storage service. In MinIO before version RELEASE.2021-03-04T00-53-13Z it is possible to bypass a readOnly policy by creating a temporary 'mc share upload' URL. Everyone is impacted who uses MinIO multi-users. This is fixed in version RELEASE.2021-03-04T00-53-13Z. As a workaround, one can disable uploads with `Content-Type: multipart/form-data` as mentioned in the S3 API RESTObjectPOST docs by using a proxy in front of MinIO.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2021-21362US | medium6.5OT elevated | — | ||
MinIO is an open-source high performance object storage service and it is API compatible with Amazon S3 cloud storage service. In MinIO before version RELEASE.2021-03-04T00-53-13Z… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/minio/minio/commit/039f59b552319fcc2f83631bb421a7d4b82bc482ADVISORY
- https://github.com/minio/minio/pull/11682ADVISORY
- https://github.com/minio/minio/releases/tag/RELEASE.2021-03-04T00-53-13ZADVISORY
- https://github.com/minio/minio/security/advisories/GHSA-hq5j-6r98-9m8vADVISORY
- https://nvd.nist.gov/vuln/detail/CVE-2021-21362WEB
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