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Exploited vulnerability · CISA KEV

Is CVE-2023-28432 exploited? Yes: in CISA KEV since 21 Apr 2023

Gociux · MinIO · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2023-28432, MinIO Information Disclosure Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 21 Apr 2023, 30 days after it was published. It affects MinIO. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 21 Apr 2023
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity7.5CVSS 3.1 · high
US federal due12 May 2023BOD 22-01 deadline

What it is

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

VendorMinIO (2 exploited CVEs in KEV)
ProductMinIO
VulnerabilityMinIO Information Disclosure Vulnerability
WeaknessCWE-200
Published22 Mar 2023
Added to KEV21 Apr 2023
Reported by (CNA)GitHub_M

What to do

  1. Check whether you run it. Look for MinIO in your asset inventory, including appliances and cloud images. Stack check lists every exploited MinIO CVE at once.
  2. Apply the fix. Apply updates per vendor instructions.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 22 Mar 2023.
  4. Get told next time. Email alerts when CISA adds a CVE for MinIO.

Other exploited CVEs in MinIO

References

Questions

Is CVE-2023-28432 being exploited?

Yes. CISA added CVE-2023-28432 to the Known Exploited Vulnerabilities catalog on 21 Apr 2023, which means there is reliable evidence of exploitation in the wild.

Is CVE-2023-28432 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2023-28432?

Apply updates per vendor instructions. Check MinIO's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected MinIO and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in April 2023 · MinIO scorecard · act-now radar.

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