CVE-2021-43858CWE-269

User privilege escalation in MinIO

High · published December 27, 2021

CVSS v3.1
8.8
EPSS
35%
Percentile
98.5
In the wild
Unconfirmed
What it is

MinIO is a Kubernetes native application for cloud storage. Prior to version `RELEASE.2021-12-27T07-23-18Z`, a malicious client can hand-craft an HTTP API call that allows for updating policy for a user and gaining higher privileges. The patch in version `RELEASE.2021-12-27T07-23-18Z` changes the accepted request body type and removes the ability to apply policy changes through this API. There is a workaround for this vulnerability: Changing passwords can be disabled by adding an explicit `Deny` rule to disable the API for users.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.35462 · 98.5th percentile
Weakness
CWE-269 · Improper Privilege Management
Published
2021-12-27T21:20Z
EPSS history
Timeline
  • 27 DEC 21:20Z
    User privilege escalation in MinIO
    cvelistv5