Improper access control in minio - CVE-2023-28434
Published: September 5, 2023 / Updated: September 19, 2023
Vulnerability identifier: #VU80422
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:A/U:Green
CVE-ID: CVE-2023-28434
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: MinIO
Affected software:
minio
minio
Detailed vulnerability description
The vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions. A remote user with "arn:aws:s3:::*" permission and enabled Console API access can bypass metadata bucket name checking and put an object into any bucket while processing "PostPolicyBucket".
How to mitigate CVE-2023-28434
Install updates from vendor's website.