CVE-2021-43858

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.

CVSS v3.1

8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

6.5 MEDIUMAV:N/AC:L/Au:S/C:P/I:P/A:P

EPSS

35.46% chance of exploitation in the next 30 days, 98th percentile

Published

2021-12-27

Updated

2024-08-04

Proof-of-concept exploits (2)

• 0rx1/cve-2021-438583★ · 2022-01-03
• khuntor/CVE-2021-43858-MinIO0★ · 2023-04-12

References

• CVE Record
• NVD entry

Related

• CVE-2019-11447
• CVE-2021-43857
• CVE-2021-4387
• CVE-2021-43848
• CVE-2021-4388
• CVE-2021-43847