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CVE-2023-27321 — Uncontrolled Resource Consumption in...

HIGH

Uncontrolled Resource Consumption in OPC UA .NET Standard Reference Server

Published May 5, 2023Updated May 8, 2024Source: osv

Summary

This security update resolves a vulnerability in the OPC UA .NET Standard Reference Server that allows remote attackers to send malicious requests that consume all memory available to the server. https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2023-27321.pdf

Advisory Timeline

  • First published May 5, 2023 (1256 days ago).
  • Last revised May 8, 2024 — 369 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

NuGet
Update OPCFoundation.NetStandard.Opc.Ua.Server to 1.4.371.86 or later
dotnet add package OPCFoundation.NetStandard.Opc.Ua.Server --version 1.4.371.86

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: nuget (1).

PackageEcosystemAffectedFixed In
OPCFoundation.NetStandard.Opc.Ua.Server
nuget
1.4.363.104-preview, 1.4.363.107, 1.4.364.40, 1.4.365-gfc341ee8c5 (+26 more)1.4.371.86

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-400
    Uncontrolled Resource ConsumptionMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.5 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

References

Frequently Asked Questions

What is CVE-2023-27321?
Uncontrolled Resource Consumption in OPC UA .NET Standard Reference Server This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.5/10).
How do I check if my project is affected by CVE-2023-27321?
CVE-2023-27321 affects OPCFoundation.NetStandard.Opc.Ua.Server. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2023-27321 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
7.5

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-vpf7-r2fv-75m9

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