CVE-2021-43858 Information

Description

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 Vector

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

Reference

https://github.com/minio/minio/commit/5a96cbbeaabd0a82b0fe881378e7c21c85091abf https://github.com/minio/minio/releases/tag/RELEASE.2021-12-27T07-23-18Z https://github.com/minio/minio/pull/13976 https://github.com/minio/minio/security/advisories/GHSA-j6jc-jqqc-p6cx https://github.com/minio/minio/pull/7949

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8