dbcve.org
Visual Components Network License ServerApplication · Kuka

CVE-2020-10292

HIGH · 8.2 CVSS v3.1 Published 2020-11-06
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
91/100
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
Visual Components (owned by KUKA) is a robotic simulator that allows simulating factories and robots in order toimprove planning and decision-making processes. Visual Components software requires a special license which can beobtained from a network license server. The network license server binds to all interfaces (0.0.0.0) and listensfor packets over UDP port 5093. No authentication/authorization is required in order to communicate with theserver. The protocol being used is a property protocol by RMS Sentinel which provides the licensing infrastructurefor the network license server. RMS Sentinel license manager service exposes UDP port 5093 which provides sensitivesystem information that could be leveraged for further exploitation without any kind of authentication. Thisinformation includes detailed hardware and OS characteristics.After a decryption process, a textual protocol is found which contains a simple header with the requested command,application-identifier, and some arguments. The protocol is vulnerable to DoS through an arbitrary pointerderreference. This flaw allows an attacker to to pass a specially crafted package that, when processed by theservice, causes an arbitrary pointer from the stack to be dereferenced, causing an uncaught exception thatterminates the service. This can be further contructed in combination with RVDP#710 which exploits an informationdisclosure leak, or with RVDP#711 for an stack-overflow and potential code execution.Beyond denying simulations, Visual Components provides capabilities to interface with industrial machinery andautomate certain processes (e.g. testing, benchmarking, etc.) which depending on the DevOps setup might beintegrated into the industrial flow. Accordingly, a DoS in the simulation might have higher repercusions, dependingon the Industrial Control System (ICS) ICS infrastructure.

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 RMS Sentinel license manager in Visual Components (KUKA) binds to UDP port 5093 on all interfaces without authentication. The proprietary protocol is vulnerable to a denial-of-service attack via arbitrary pointer dereference. A specially crafted UDP packet causes the service to dereference an arbitrary stack pointer, resulting in an uncaught exception that crashes the license server.

MitigationRestrict network access to UDP port 5093 via firewall or network segmentation; implement authentication if supported by the license manager; apply any available vendor patches.

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
Visual Components Network License ServerApplication
Affected:= 2.0.8

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
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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 if KUKA Visual Components software is installed
    Check the system for installed software named 'Visual Components', 'KUKA', or 'RMS Sentinel' in program directories or installed programs list. Look for license server components.
    Affected if The software is present on the system
  2. Check the installed version of the license server
    Locate the license manager executable or check installed program version information. Compare against the affected version 2.0.8.
    Affected if The installed version is exactly 2.0.8
  3. Verify if UDP port 5093 is open and listening
    Run 'netstat -an | grep 5093' or 'ss -ulnp | grep 5093' to check if the license server is listening on UDP port 5093.
    Affected if UDP port 5093 is in LISTEN or OPEN state
  4. Confirm the service binds to all network interfaces
    Check the binding address for port 5093 - if it shows 0.0.0.0 or :: (all interfaces) rather than a specific IP, it is vulnerable.
    Affected if The service binds to 0.0.0.0 or :: (all interfaces) on UDP port 5093

A user is affected if they have KUKA Visual Components Network License Server version 2.0.8 running with UDP port 5093 exposed and bound to all network interfaces.

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

Restrict network access to UDP port 5093 via firewall or network segmentation; implement authentication if supported by the license manager; apply any available vendor patches.

Fix this in Visual Components Network License Server Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA2.0 h
20.0 hours of engineering $3,500
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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-2020-10292 in production — separate from our analysis above.

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What belongs here
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