CVE-2023-28432
MinIO Information Disclosure Vulnerability
MinIO MinIO
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.
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 21 April 2023. US federal agencies were required to remediate it by 12 May 2023.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 84%, which is higher than 99.7% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Frequently asked questions
Is CVE-2023-28432 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2023-28432.
What does CVE-2023-28432 affect?
CVE-2023-28432 affects MinIO MinIO. 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.
How severe is CVE-2023-28432?
CVE-2023-28432 is rated HIGH with a CVSS base score of 7.5. EPSS puts the probability of exploitation in the next 30 days at 84%, higher than 99.7% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 12 May 2023.
How should organisations respond to CVE-2023-28432?
Apply the vendor patch for MinIO MinIO as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.