CVE-2023-28434

MinIO Security Feature Bypass Vulnerability

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

Yes

*KEV

Decision

Act

*SSVC

Descriptions

NVD
CISA

Minio is a Multi-Cloud Object Storage framework. Prior to RELEASE.2023-03-20T20-16-18Z, an attacker can use crafted requests to bypass metadata bucket name checking and put an object into any bucket while processing `PostPolicyBucket`. To carry out this attack, the attacker requires credentials with `arn:aws:s3:::*` permission, as well as enabled Console API access. This issue has been patched in RELEASE.2023-03-20T20-16-18Z. As a workaround, enable browser API access and turn off `MINIO_BROWSER=off`.

MinIO contains a security feature bypass vulnerability that allows an attacker to use crafted requests to bypass metadata bucket name checking and put an object into any bucket while processing `PostPolicyBucket` to conduct privilege escalation. To carry out this attack, the attacker requires credentials with `arn:aws:s3:::*` permission, as well as enabled Console API access.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Act

Exploitation

Active

Automatable

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2023-03-15 CVE Reserved
2023-03-22 CVE Published
2023-09-19 Exploited in Wild
2023-10-10 KEV Due Date
2024-11-21 First Exploit
2024-12-17 EPSS Updated
2025-01-28 CVE Updated

CWE

CWE-269: Improper Privilege Management

CAPEC

References (4)

URL	Tag	Source

URL	Date	SRC
https://github.com/AbelChe/evil_minio	2024-11-21
https://github.com/minio/minio/pull/16849	2025-01-28

URL	Date	SRC
https://github.com/minio/minio/commit/67f4ba154a27a1b06e48bfabda38355a010dfca5	2024-06-21

URL	Date	SRC
https://github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4p8c	2024-06-21

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Minio Search vendor "Minio"		Minio Search vendor "Minio" for product "Minio"				< 2023-03-20t20-16-18z Search vendor "Minio" for product "Minio" and version " < 2023-03-20t20-16-18z"		-		Affected