CVE-2021-21362CWE-285

Bypassing readOnly policy by creating a temporary 'mc share upload' URL

High · published March 8, 2021

CVSS v3.1
7.7
EPSS
1%
Percentile
70.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.7 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.01321 · 70.7th percentile
Weakness
CWE-285 · Improper Authorization
Published
2021-03-08T18:40Z
EPSS history
Timeline
  • 08 MAR 18:40Z
    Bypassing readOnly policy by creating a temporary 'mc share upload' URL
    cvelistv5