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CVE-2023-28432

MinIO Information Disclosure

7.5 HIGHActively exploited (CISA KEV)Public exploitEPSS 84.0%
  1. Published22 Mar 2023
  2. Added to CISA KEV21 Apr 2023
  3. Remediation due12 May 2023
Actively exploited (CISA KEV)

MinIO contains a vulnerability in a cluster deployment where MinIO returns all environment variables, which allows for information disclosure.

Added to KEV: 21 Apr 2023Federal remediation due: 12 May 2023

Description

Minio is a Multi-Cloud Object Storage framework. In a cluster deployment starting with RELEASE.2019-12-17T23-16-33Z and prior to RELEASE.2023-03-20T20-16-18Z, MinIO returns all environment variables, including `MINIO_SECRET_KEY` and `MINIO_ROOT_PASSWORD`, resulting in information disclosure. All users of distributed deployment are impacted. All users are advised to upgrade to RELEASE.2023-03-20T20-16-18Z.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

Minio≥ 2019-12-17t23-16-33z < 2023-03-20t20-16-18z

Remediation

Fixed in
Minio≥ 2023-03-20t20-16-18z

References

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Frequently asked

Is CVE-2023-28432 being actively exploited?

Yes. CVE-2023-28432 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 21 Apr 2023.

How severe is CVE-2023-28432?

CVE-2023-28432 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 84.0% probability of exploitation.

Which products are affected by CVE-2023-28432?

Affected products include Minio.

How do I fix CVE-2023-28432?

Upgrade affected software to a fixed version, for example Minio 2023-03-20t20-16-18z or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-28432 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.