CVE-2023-28434: MinIO Security Feature Bypass Vulnerability

CISA Known Exploited Vulnerability (KEV)

Description

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.

Required action (CISA)

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

Notes

https://github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4p8c; https://nvd.nist.gov/vuln/detail/CVE-2023-28434

Weakness behind it

CISA records this vulnerability as an instance of CWE-269. From there the chain continues into CAPEC attack patterns and ATT&CK techniques, all inside this corpus.

References

• NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-28434
• KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog