dbcve.org
UagatewayApplication · Unified Automation

CVE-2023-32171

MEDIUM · 6.5 CVSS v3.0 Published 2024-05-03
Fix available
A fix is available. Upgrade to 1.5.13.487 or later.
See remediation →
71/100
Remediation priority · Elevated
Remotely reachable 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
Unified Automation UaGateway OPC UA Server Null Pointer Dereference Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation UaGateway. Authentication is required to exploit this vulnerability. The specific flaw exists within the ImportCsv method. A crafted XML payload can cause a null pointer dereference. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-20495.

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

A null pointer dereference vulnerability exists in the ImportCsv method of Unified Automation UaGateway OPC UA server. An authenticated attacker can exploit this by sending a crafted XML payload to trigger the null pointer dereference, causing a denial-of-service condition.

MitigationApply the vendor patch from Unified Automation when available. Until then, restrict network access to the UaGateway to trusted, authenticated users only to reduce attack surface.

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
UagatewayApplication
Affected:< 1.5.13.487

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
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 Unified Automation UaGateway is installed
    Locate the UaGateway installation by searching for the executable or service on the system. Common locations include Program Files on Windows or standard application directories on Linux.
    Affected if UaGateway software is found on the system
  2. Determine the installed UaGateway version
    Retrieve the version information of the installed UaGateway instance using system tools, product documentation, or by inspecting the executable properties.
    Affected if The installed version is lower than 1.5.13.487
  3. Verify ImportCsv functionality is accessible
    Check if the ImportCsv method is exposed or enabled in the UaGateway configuration, typically found in the server settings, import/export modules, or feature toggles.
    Affected if ImportCsv functionality is enabled or exposed in the configuration
  4. Assess network exposure of UaGateway service
    Determine if the UaGateway OPC UA server is accessible over the network and identify what authentication mechanisms are in place for remote access.
    Affected if The service is network-accessible without proper authentication controls

The environment is affected if UaGateway is installed with a version lower than 1.5.13.487 and the ImportCsv method is accessible to authenticated attackers over the network.

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 1.5.13.487 or later
Fixed in 1.5.13.487
Interim mitigation

Apply the vendor patch from Unified Automation when available. Until then, restrict network access to the UaGateway to trusted, authenticated users only to reduce attack surface.

Recommended fix High confidence

Uagateway version 1.5.13.487 or later

  1. Identify the currently installed version of Unified Automation UaGateway
  2. If the installed version is prior to 1.5.13.487, obtain the updated version 1.5.13.487 or later from the official vendor (Unified Automation)
  3. Follow the vendor's standard upgrade procedure to apply the update
  4. Verify the upgrade was successful by confirming the new version is running
  5. Restart any affected services if required by the upgrade process

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

Fix this in Uagateway Scoped from the published advisory
  • Consultation3.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
12.0 hours of engineering $2,130
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,408.

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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-2023-32171 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