CVE-2021-21362

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.

Date published : 2021-03-08

https://github.com/minio/minio/security/advisories/GHSA-hq5j-6r98-9m8v

https://github.com/minio/minio/commit/039f59b552319fcc2f83631bb421a7d4b82bc482