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Hyperflex Hx220c M5 FirmwareOperating system · Cisco

CVE-2019-12620

MEDIUM · 5.3 CVSS v3.1 Published 2019-09-18
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
62/100
Remediation priority · Elevated
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A vulnerability in the statistics collection service of Cisco HyperFlex Software could allow an unauthenticated, remote attacker to inject arbitrary values on an affected device. The vulnerability is due to insufficient authentication for the statistics collection service. An attacker could exploit this vulnerability by sending properly formatted data values to the statistics collection service of an affected device. A successful exploit could allow the attacker to cause the web interface statistics view to present invalid data to users.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

The statistics collection service in Cisco HyperFlex Software lacks proper authentication checks, allowing unauthenticated remote attackers to inject arbitrary data values. An attacker sends properly formatted data to the statistics service, causing the web interface to display invalid statistics to users.

MitigationImplement authentication and input validation for the statistics collection service to ensure only authorized sources can submit data.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Hyperflex Hx220c M5 FirmwareOperating system
Affected:= 3.0\(1a\)= 3.5\(2a\)= 4.0\(1a\)
Hyperflex Hx240c M5 FirmwareOperating system
Affected:= 3.0\(1a\)= 3.5\(2a\)= 4.0\(1a\)
Hyperflex Hx220c Af M5 FirmwareOperating system
Affected:= 3.0\(1a\)= 3.5\(2a\)= 4.0\(1a\)
Hyperflex Hx240c Af M5 FirmwareOperating system
Affected:= 3.0\(1a\)= 3.5\(2a\)= 4.0\(1a\)
Hyperflex Hx220c Edge M5 FirmwareOperating system
Affected:= 3.0\(1a\)= 3.5\(2a\)= 4.0\(1a\)

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify installed firmware version
    Access the HyperFlex cluster management interface or use the command 'show version' via SSH to the HX controller. Look for the firmware version string in the format X.Y(Z).
    Affected if The firmware version matches exactly 3.0(1a), 3.5(2a), or 4.0(1a).
  2. Verify statistics collection service is enabled
    Check if the statistics collection service is running by accessing the management interface or querying the service port. The service typically listens on a port related to statistics collection.
    Affected if The statistics collection service is enabled and running on the system.
  3. Test statistics service for authentication requirement
    Send a properly formatted statistics data packet to the statistics collection endpoint without providing any authentication credentials. Use a tool like curl or netcat to send data to the statistics service port.
    Affected if The statistics service accepts and processes the data without requiring any authentication token, header, or credentials.
  4. Check access controls on statistics endpoint
    Examine the web interface or API configuration for the statistics collection endpoint. Look for access control lists, authentication requirements, or whitelist configurations that should restrict who can submit statistics data.
    Affected if No authentication or authorization controls are configured for the statistics submission endpoint, or the endpoint is publicly accessible.

Your environment is affected if you are running firmware version 3.0(1a), 3.5(2a), or 4.0(1a) and the statistics collection service is accessible without authentication.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement authentication and input validation for the statistics collection service to ensure only authorized sources can submit data.

Fix this in Hyperflex Hx220c M5 Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2019-12620 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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