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Exploited vulnerability · CISA KEV

Is CVE-2016-3643 exploited? Yes: in CISA KEV since 3 Nov 2021

Gociux · SolarWinds Virtualization Manager · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2016-3643, SolarWinds Virtualization Manager Privilege Escalation Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 3 Nov 2021, 1965 days after it was published. It affects SolarWinds Virtualization Manager. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 3 Nov 2021
ransomwareNot knownno confirmed use
EPSSbelow top 10%lower predicted activity right now (it is still confirmed exploited)
severity7.8CVSS 3.1 · high
US federal due3 May 2022BOD 22-01 deadline

What it is

SolarWinds Virtualization Manager allows for privilege escalation through leveraging a misconfiguration of sudo.

VendorSolarWinds (11 exploited CVEs in KEV)
ProductVirtualization Manager
VulnerabilitySolarWinds Virtualization Manager Privilege Escalation Vulnerability
WeaknessCWE-264
Published17 Jun 2016
Added to KEV3 Nov 2021
Reported by (CNA)mitre

What to do

  1. Check whether you run it. Look for Virtualization Manager in your asset inventory, including appliances and cloud images. Stack check lists every exploited SolarWinds 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 17 Jun 2016.
  4. Get told next time. Email alerts when CISA adds a CVE for SolarWinds.

References

Questions

Is CVE-2016-3643 being exploited?

Yes. CISA added CVE-2016-3643 to the Known Exploited Vulnerabilities catalog on 3 Nov 2021, which means there is reliable evidence of exploitation in the wild.

Is CVE-2016-3643 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-2016-3643?

Apply updates per vendor instructions. Check SolarWinds's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Virtualization Manager 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 November 2021 · SolarWinds scorecard · act-now radar.

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