dbcve.org
Apu0200 FirmwareOperating system · Sick

CVE-2023-5102

MEDIUM · 5.3 CVSS v3.1 Published 2023-10-09
Fix available
A fix is available. Upgrade to 4.0.0.6 or later.
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
Insufficient Control Flow Management in RDT400 in SICK APU allows an unprivileged remote attacker to potentially enable hidden functionality via HTTP requests.

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 · moderate confidence

Insufficient control flow management in the RDT400 component of SICK APU allows an unprivileged remote attacker to bypass intended access restrictions and enable hidden functionality through specially crafted HTTP requests. The vulnerability stems from improper validation of HTTP request flows that should enforce privilege boundaries.

MitigationImplement network segmentation to restrict access to the SICK APU device, and contact SICK for available firmware updates that address the control flow vulnerability. If no patch is available, disable or restrict HTTP access to the RDT400 interface.

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
Apu0200 FirmwareOperating system
Affected:< 4.0.0.6

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
Low
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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 the SICK APU model
    Access the device web interface or check device documentation/label to confirm the model is Apu0200
    Affected if The device is a SICK Apu0200 unit
  2. Check the installed firmware version
    Log into the SICK APU web interface and navigate to System > Info or similar firmware version display. Compare the version number against 4.0.0.6
    Affected if Firmware version is lower than 4.0.0.6
  3. Verify RDT400 HTTP interface is enabled
    Attempt to access the RDT400 endpoint via HTTP (typically /rdt400 or similar path on the device IP). Check if the interface responds to requests
    Affected if The RDT400 interface responds to HTTP requests and is accessible
  4. Assess network exposure of the device
    Determine if the SICK APU device HTTP port is directly accessible from untrusted network segments by reviewing firewall rules or attempting external access
    Affected if The HTTP interface is reachable from network segments outside the trusted administrative zone

You are affected if you have a SICK Apu0200 device running firmware below version 4.0.0.6 with the RDT400 HTTP interface enabled and accessible to the attacker.

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
Upgrade available Upgrade to 4.0.0.6 or later
Fixed in 4.0.0.6
Interim mitigation

Implement network segmentation to restrict access to the SICK APU device, and contact SICK for available firmware updates that address the control flow vulnerability. If no patch is available, disable or restrict HTTP access to the RDT400 interface.

Recommended fix Moderate confidence

Apu0200 Firmware version 4.0.0.6 or later

  1. Identify the SICK APU device running Apu0200 Firmware in the network inventory
  2. Locate the SICK APU device management interface (web UI or management console)
  3. Navigate to the firmware version information section and record current firmware version
  4. Download the latest firmware version 4.0.0.6 or later from the official SICK support portal (sick.com)
  5. Before upgrading, review SICK upgrade documentation for any prerequisites or warnings
  6. Backup current device configuration if the management interface provides export functionality
  7. Initiate firmware upgrade through the device management interface or CLI
  8. Allow sufficient time for the firmware upload and installation process to complete without interruption

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

Fix this in Apu0200 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
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.

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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-2023-5102 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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