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CVE

CVE-2021-21362

MinIO is an open-source high performance object storage service and it is API compatible with Amazon S3 cloud storage se

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.

HIGH · CVSS 7.7 EPSS 0.00103
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-285Improper Authorization
CWE-863Incorrect Authorization
▤

Affected Products & Versions

1
minio< 2021-03-04t00-53-13z
⚠

Public Exploits & PoCs

1
pocgithub.com · 11682github.com
▣

Scoring & Timeline

7.7
HIGH · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD08 Mar 2021 · 07:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/minio/minio/commit/039f59b552319fcc2f83631bb421a7d4b82bc482PatchThird Party Advisory
https://github.com/minio/minio/releases/tag/RELEASE.2021-03-04T00-53-13ZRelease NotesThird Party Advisory
https://github.com/minio/minio/security/advisories/GHSA-hq5j-6r98-9m8vThird Party Advisory
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