CVE-2023-28434: MinIO Security Feature Bypass Vulnerability
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.
| Vendor | MinIO |
|---|---|
| Product | MinIO |
| Date added to KEV | 2023-09-19 |
| Due date (BOD 22-01) | 2023-10-10 |
| Known ransomware campaign use | Unknown |
| CWE | CWE-269 |
| Required action | Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. |
What to do
- Identify every instance of MinIO MinIO in your environment (asset inventory, EDR, vulnerability scanner).
- Apply CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Federal civilian agencies must act by 2023-10-10 under BOD 22-01; other organizations can use the same date as a target.
- Check the vendor advisory and NVD entry linked below for affected versions, then record the fix in your change log.
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