CVE-2023-28434
MinIO Security Feature Bypass Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 10 October 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
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 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 7.92% probability · 94th percentile
- CISA KEV
- Listed 19 September 2023 · due 10 October 2023
- Weakness
- CWE-269
- Affected
- minio/minio
- Source
- security-advisories@github.com
CISA notes
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. https://github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4p8c; https://nvd.nist.gov/vuln/detail/CVE-2023-28434
References
- https://github.com/minio/minio/commit/67f4ba154a27a1b06e48bfabda38355a010dfca5Patch
- https://github.com/minio/minio/pull/16849Exploit, Issue Tracking
- https://github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4p8cVendor Advisory
- https://github.com/minio/minio/commit/67f4ba154a27a1b06e48bfabda38355a010dfca5Patch
- https://github.com/minio/minio/pull/16849Exploit, Issue Tracking
- https://github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4p8cVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-28434US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.