Auth bypass in Minio
CVE-2021-41137
Minio is a Kubernetes native application for cloud storage. All users on release `RELEASE.2021-10-10T16-53-30Z` are affected by a vulnerability that involves bypassing policy restrictions on regular users. Normally, checkKeyValid() should return owner true for rootCreds. In the affected version, policy restriction did not work properly for users who did not have service (svc) or security token service (STS) accounts. This issue is fixed in `RELEASE.2021-10-13T00-23-17Z`. A downgrade back to release `RELEASE.2021-10-08T23-58-24Z` is available as a workaround.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.013 (69.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
- Minio — versions = RELEASE.2021-10-10T16-53-30Z, 2021-10-10t16-53-30z
Weakness classification (CWE)
References
- github.com/minio/minio/security/advisories/GHSA-v64v-g97p-577c (Third Party Advisory)
- github.com/minio/minio/pull/13388 (Patch, Third Party Advisory)
- github.com/minio/minio/pull/13422 (Patch, Third Party Advisory)
- github.com/minio/minio/commit/415bbc74aacd53a120e54a663e941b1809982dbd (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-41137?
- CVE-2021-41137 is a high-severity vulnerability in Minio, classified under Improper Authorization. CVSS score: 8.8/10. Published 2021-10-13.
- How severe is CVE-2021-41137?
- High severity. CVSS v3 base score is 8.8 out of 10.