What’s Vulnerable › Vulnerabilities

CVE-2022-31028: Possible DDOS by establishing keep-alive connections with anonymous HTTP clients in MinIO

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-06-07 · updated 2026-06-17
• Weakness: CWE-400

Description

MinIO is a multi-cloud object storage solution. Starting with version RELEASE.2019-09-25T18-25-51Z and ending with version RELEASE.2022-06-02T02-11-04Z, MinIO is vulnerable to an unending go-routine buildup while keeping connections established due to HTTP clients not closing the connections. Public-facing MinIO deployments are most affected. Users should upgrade to RELEASE.2022-06-02T02-11-04Z to receive a patch. One possible workaround is to use a reverse proxy to limit the number of connections being attempted in front of MinIO, and actively rejecting connections from such malicious clients.

Affected products

• minio: from 2019-09-25t18-25-51z before 2022-06-02t02-11-04z — fixed in 2022-06-02t02-11-04z

How to fix

Upgrade to a fixed version: minio 2022-06-02t02-11-04z. Check the vendor advisory for mitigations.

References

• https://gist.github.com/harshavardhana/2d00e6f909054d2d2524c71485ad02e1
• https://github.com/minio/minio/pull/14995
• https://github.com/minio/minio/releases/tag/RELEASE.2022-06-03T01-40-53Z
• https://github.com/minio/minio/security/advisories/GHSA-qrpr-r3pw-f636
• https://gist.github.com/harshavardhana/2d00e6f909054d2d2524c71485ad02e1
• https://github.com/minio/minio/pull/14995
• https://github.com/minio/minio/releases/tag/RELEASE.2022-06-03T01-40-53Z
• https://github.com/minio/minio/security/advisories/GHSA-qrpr-r3pw-f636

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