What is CVE-2023-28433?

CVE-2023-28433 is a high-severity vulnerability in Minio, classified under Exposure of Resource to Wrong Sphere. CVSS score: 8.8/10. Published 2023-03-22.

How severe is CVE-2023-28433?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Minio

CVE-2023-28433

Minio is a Multi-Cloud Object Storage framework. All users on Windows prior to version RELEASE.2023-03-20T20-16-18Z are impacted. MinIO fails to filter the `\` character, which allows for arbitrary object placement across buckets. As a result, a user with low privileges, such as an access key, service account, or STS credential, which only has permission to `PutObject` in a specific bucket, can create an admin user. This issue is patched in RELEASE.2023-03-20T20-16-18Z. There are no known workarounds.

EPSS: 0.010 (58.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Minio — versions < RELEASE.2023-03-20T20-16-18Z

Weakness classification (CWE)

CWE-668 — Exposure of Resource to Wrong Sphere

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)
security-advisories@github.com (Patch, x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2023-28433?: CVE-2023-28433 is a high-severity vulnerability in Minio, classified under Exposure of Resource to Wrong Sphere. CVSS score: 8.8/10. Published 2023-03-22.
How severe is CVE-2023-28433?: High severity. CVSS v3 base score is 8.8 out of 10.