CISA KEV · Known exploitedHigh

CVE-2023-28434

MinIO

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`.

CVSS: 8.8
EPSS: 6.68%
CISA KEV: Listed
Published: 2023.03.23

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability6.68%

Technical severityCVSS 8.8

Vulnerability overview

Affected product and versions

Product: MinIO
Affected versions: < RELEASE.2023-03-20T20-16-18Z, < 2023-03-20t20-16-18z
Fixed versions: 2023-03-20t20-16-18z

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Due date: 2023.10.10

1
Identify
Confirm that MinIO and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-269
KEV added: 2023.09.19
Ransomware use: 미확인