CVE-2021-21362 HIGH

CVE-2021-21362: Bypassing readOnly policy by creating a temporary 'mc share upload' URL

Vendor Minio

Product minio

Weakness CWE-285

Published March 8, 2021

Last update August 3, 2024

View on NVD All CVEs

CVSS base score

7.7/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction None

Confidentiality None

Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 8, 2021 CVE published

August 3, 2024 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2021-21362 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/285.html