CVE-2023-28434

high-risk
Published 2023-03-22

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`.

Do I need to act?

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52.1% chance of exploitation in next 30 days
EPSS score — higher than 48% of all CVEs
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CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Minio

References (7)

Patch https://github.com/minio/minio/commit/67f4ba154a27a1b06e48bfabda38355a010dfca5
Exploit https://github.com/minio/minio/pull/16849
Vendor Advisory https://github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4p8c
Patch https://github.com/minio/minio/commit/67f4ba154a27a1b06e48bfabda38355a010dfca5
Exploit https://github.com/minio/minio/pull/16849
Vendor Advisory https://github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4p8c
US Government Resource https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-...
60
/ 100
high-risk
Severity 30/34 · Critical
Exploitability 25/34 · High
Exposure 5/34 · Minimal