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

What is CVE-2022-31028?

CVE-2022-31028 is a high-severity denial of service vulnerability in minio, published on 3 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-400

Which versions are affected by CVE-2022-31028?

It affects 1 product.

Products include Minio Minio.

How do I fix CVE-2022-31028?

No fix has been published for CVE-2022-31028 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2022-31028 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-31028 exists.

Other vulnerabilities in minio

• CVE-2023-28434 MinIO Security Feature Bypass Exploited High 8.8
• CVE-2023-28432 MinIO Information Disclosure Exploited High 7.5
• CVE-2020-11012 Authentication bypass MinIO Admin API Critical 9.3
• CVE-2026-33322 MinIO: JWT Algorithm Confusion in OIDC Authentication Critical 9.2
• CVE-2026-33419 MinIO: LDAP login brute-force via user enumeration and missing rate limit Critical 9.1

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-qrpr-r3pw-f636.