MinIO Security Feature Bypass Vulnerability

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Summary

CVECVE-2023-28434
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-03-22 21:15:00 UTC
Updated2023-11-07 04:10:00 UTC
DescriptionMinio 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`.

Risk And Classification

EPSS: 0.520870000 probability, percentile 0.979240000 (date 2026-04-21)

CISA KEV: Listed on 2023-09-19; due 2023-10-10; ransomware use Unknown

Problem Types: NVD-CWE-noinfo

CISA Known Exploited Vulnerability

VendorMinIO
ProductMinIO
NameMinIO Security Feature Bypass Vulnerability
Required ActionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Noteshttps://github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4p8c; https://nvd.nist.gov/vuln/detail/CVE-2023-28434

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Minio Minio All All All All

References

ReferenceSourceLinkTags
fix: post policy request security bypass (#16849) · minio/minio@67f4ba1 · GitHub MISC github.com
Privilege Escalation on Linux/MacOS · Advisory · minio/minio · GitHub MISC github.com
fix: post policy request security bypass by donatello · Pull Request #16849 · minio/minio · GitHub MISC github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev
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