Exploited vulnerability · CISA KEV

Is CVE-2021-38647 exploited? Yes: in CISA KEV since 3 Nov 2021

Gociux · Microsoft Open Management Infrastructure (OMI) · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2021-38647, Microsoft Open Management Infrastructure (OMI) Remote Code Execution Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 3 Nov 2021, 49 days after it was published. It is known to be used in ransomware campaigns. It affects Microsoft Open Management Infrastructure (OMI). If you run it, CISA's required action is: Apply updates per vendor instructions.

What it is

Microsoft Open Management Infrastructure (OMI) within Azure VM Management Extensions contains an unspecified vulnerability allowing remote code execution.

What to do

1. Check whether you run it. Look for Open Management Infrastructure (OMI) in your asset inventory, including appliances and cloud images. Stack check lists every exploited Microsoft 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 15 Sep 2021.
4. Get told next time. Email alerts when CISA adds a CVE for Microsoft.

Other exploited CVEs in Open Management Infrastructure (OMI)

• CVE-2021-38645: Microsoft Open Management Infrastructure (OMI) Privilege Escalation Vulnerability (3 Nov 2021)
• CVE-2021-38649: Microsoft Open Management Infrastructure (OMI) Privilege Escalation Vulnerability (3 Nov 2021)
• CVE-2021-38648: Microsoft Open Management Infrastructure (OMI) Privilege Escalation Vulnerability (3 Nov 2021)

References

• nvd.nist.gov/vuln/detail/CVE-2021-38647

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 November 2021 · Microsoft scorecard · act-now radar.