dbcve.org
Emc UnisphereApplication · Dell

CVE-2016-6646

CRITICAL · 9.8 CVSS v3.0 Published 2016-10-05
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
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
The vApp Managers web application in EMC Unisphere for VMAX Virtual Appliance 8.x before 8.3.0 and Solutions Enabler Virtual Appliance 8.x before 8.3.0 allows remote attackers to execute arbitrary code via crafted input to the (1) GetSymmCmdRequest or (2) RemoteServiceHandler class.

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 vApp Managers web application in EMC Unisphere for VMAX Virtual Appliance and Solutions Enabler Virtual Appliance versions prior to 8.3.0 contains a code injection vulnerability in the GetSymmCmdRequest and RemoteServiceHandler classes. Remote unauthenticated attackers can send specially crafted input to these classes to execute arbitrary code on the underlying system.

MitigationUpgrade EMC Unisphere for VMAX Virtual Appliance and Solutions Enabler Virtual Appliance to version 8.3.0 or later to remediate this vulnerability. Until patching is feasible, restrict network access to the management interfaces via firewall rules or network segmentation.

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
Emc UnisphereApplication
Affected:= 8.0= 8.1= 8.1.2= 8.2
Solutions EnablerApplication
Affected:= 8.0= 8.0.3= 8.1= 8.1.2= 8.3
UnisphereApplication
Affected:= 8.0.3

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
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 the installed Unisphere version
    Access the web UI login page or admin console of the Virtual Appliance and locate the version information, typically displayed on the login screen or in System > About/Information settings
    Affected if The displayed version matches 8.0, 8.1, 8.1.2, or 8.2 for Dell EMC Unisphere, or 8.0.3 for EMC Unisphere
  2. Identify the installed Solutions Enabler version
    Access the Solutions Enabler Virtual Appliance web interface or CLI and retrieve the version number from the admin or system information page
    Affected if The displayed version matches 8.0, 8.0.3, 8.1, 8.1.2, or 8.3 for EMC Solutions Enabler
  3. Confirm the vApp Manager web application is exposed
    Attempt to access the web management interface via the appliance IP or hostname on the typical management ports (HTTPS port 443 or 8443)
    Affected if The Unisphere or Solutions Enabler web interface is reachable over the network
  4. Check if RemoteServiceHandler endpoint is accessible
    Probe the web application for the RemoteServiceHandler class endpoint using a tool like curl or browser developer tools to see if the path responds (e.g., /symmwin/RemoteServiceHandler or similar vApp Manager paths)
    Affected if The endpoint returns an HTTP response, indicating the vulnerable class is exposed
  5. Verify the appliance is running as a Virtual Appliance
    Confirm the environment is a VMAX Virtual Appliance or Solutions Enabler Virtual Appliance by checking the system type in the web UI or CLI
    Affected if The appliance is identified as a VMAX Virtual Appliance or Solutions Enabler Virtual Appliance

You are affected if your installed version of EMC Unisphere or Solutions Enabler Virtual Appliance is any of 8.0, 8.0.3, 8.1, 8.1.2, 8.2, or 8.3 and the web management interface is network-accessible.

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.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade EMC Unisphere for VMAX Virtual Appliance and Solutions Enabler Virtual Appliance to version 8.3.0 or later to remediate this vulnerability. Until patching is feasible, restrict network access to the management interfaces via firewall rules or network segmentation.

Recommended fix High confidence

8.3.0 or later

  1. Identify the specific EMC product affected (Unisphere for VMAX Virtual Appliance or Solutions Enabler Virtual Appliance)
  2. Check the currently installed version of the vApp Manager web application
  3. Upgrade the affected virtual appliance to version 8.3.0 or later
  4. After upgrade, verify the vApp Manager web application is running the patched version
  5. Confirm that the GetSymmCmdRequest and RemoteServiceHandler endpoints no longer accept arbitrary code via crafted input

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Emc Unisphere Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA1.0 h
10.0 hours of engineering $1,750
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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-2016-6646 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
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data