CVE-2024-42512: OPCFoundation.NetStandard.Opc.Ua.Core Security Update For The OPC Vulnerability

MODERATE
Advisory Identifier: GHSA-h958-fxgg-g7w3
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CVSS 5.9
CWE-639 CWE-208
Published
Advisory Summary

CVE-2024-42512 is a MODERATE (CVSS 5.9) security update for the opc vulnerability (CWE-639: Authorization Bypass Through User-Controlled Key) affecting OPCFoundation.NetStandard.Opc.Ua.Core libraries in the NuGet ecosystem. The issue involves security update for the opc ua .net standard stack. Remediation is available by upgrading affected packages to version 1.5.374.158.

CVE-2024-42512 at a Glance

CVE Identifier CVE-2024-42512
GHSA Identifier GHSA-h958-fxgg-g7w3
Severity MODERATE
CVSS v3.1 Base Score 5.9
CWE Classification CWE-639: Authorization Bypass Through User-Controlled Key
Affected Product OPCFoundation.NetStandard.Opc.Ua.Core
Package Ecosystem NuGet
Published Date
Last Updated

Security Impact

CVSS: 5.9

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2024-42512

To remediate this vulnerability, upgrade all affected OPCFoundation.NetStandard.Opc.Ua.Core dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

OPCFoundation.NetStandard.Opc.Ua.Core fixed: 1.5.374.158 
Upgrade OPCFoundation.NetStandard.Opc.Ua.Core to 1.5.374.158
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for OPCFoundation.NetStandard.Opc.Ua.Core

How to Check if You Are Affected

To determine whether your application is affected by CVE-2024-42512, inspect your project dependencies for OPCFoundation.NetStandard.Opc.Ua.Core:

inspect dependencies for OPCFoundation.NetStandard.Opc.Ua.Core

Analyze the terminal output to locate any version of OPCFoundation.NetStandard.Opc.Ua.Core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.5.374.158), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-639: Authorization Bypass Through User-Controlled Key, where the system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. In OPCFoundation.NetStandard.Opc.Ua.Core, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

This security update resolves a vulnerability in the OPC UA .NET Standard Stack that allows an unauthorized attacker to bypass application authentication when the deprecated Basic128Rsa15 security policy is enabled. Note that the Basic128Rsa15 is disabled by default so most users will not be affected. When this patch is applied the Server closes all channels using the Basic128Rsa15 if an attack is detected. This introduces a DoS before any compromise can occur which is preferable to a compromise. To prevent this failure, applications must stop using Basic128Rsa15.

CVE-2024-42512 Affected OPCFoundation.NetStandard.Opc.Ua.Core Versions

1 component(s)
Fixed Versions:
1.5.374.158
Product / Package Ecosystem Affected Versions Fixed Version
OPCFoundation.NetStandard.Opc.Ua.Core
nuget/OPCFoundation.NetStandard.Opc.Ua.Core
NuGet
< 1.5.374.158
1.5.374.158

References

GitHub Advisory / Wiki ADVISORY
https://github.com/OPCFoundation/UA-.NETStandard/security/advisories/GHSA-h958-fxgg-g7w3
NVD — CVE-2024-42512 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-42512
Security Fix Commit FIX COMMIT
https://github.com/OPCFoundation/UA-.NETStandard/commit/3543d0292556691f681e39145e2de4526b90487d
OPCFoundation.NetStandard.Opc.Ua.Core Security Information SECURITY
https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2024-42512.pdf
OPCFoundation.NetStandard.Opc.Ua.Core Source Repository REPOSITORY
https://github.com/OPCFoundation/UA-.NETStandard

Frequently Asked Questions

What is CVE-2024-42512?
CVE-2024-42512 is a security vulnerability in OPCFoundation.NetStandard.Opc.Ua.Core involving Security Update for the OPC UA .NET Standard Stack under CWE-639: Authorization Bypass Through User-Controlled Key.
Which OPCFoundation.NetStandard.Opc.Ua.Core versions are affected?
Affected versions include releases prior to 1.5.374.158 across affected packages: OPCFoundation.NetStandard.Opc.Ua.Core.
What version fixes CVE-2024-42512?
Upgrading to 1.5.374.158 (or the latest patched release for your respective branch) resolves the vulnerability.
Is OPCFoundation.NetStandard.Opc.Ua.Core affected?
Yes, OPCFoundation.NetStandard.Opc.Ua.Core is affected in releases prior to 1.5.374.158. Upgrade your dependency to 1.5.374.158 or later.
What is the CVSS score of CVE-2024-42512?
CVE-2024-42512 has a CVSS v3.1 base score of 5.9 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2024-42512?
CVE-2024-42512 is classified under CWE-639: Authorization Bypass Through User-Controlled Key (The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.).
How can I check NuGet dependencies for CVE-2024-42512?
Run the dependency tree command: 'inspect dependencies for OPCFoundation.NetStandard.Opc.Ua.Core'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-h958-fxgg-g7w3",
  "modified" : "2025-05-27T18:36:37Z",
  "published" : "2025-03-03T20:10:59Z",
  "aliases" : [ "CVE-2024-42512" ],
  "summary" : "Security Update for the OPC UA .NET Standard Stack",
  "details" : "This security update resolves a vulnerability in the OPC UA .NET Standard Stack that allows an unauthorized attacker to bypass application authentication when the deprecated Basic128Rsa15 security policy is enabled.\n\nNote that the Basic128Rsa15 is disabled by default so most users will not be affected. When this patch is applied the Server closes all channels using the Basic128Rsa15 if an attack is detected. This introduces a DoS before any compromise can occur which is preferable to a compromise. To prevent this failure, applications must stop using Basic128Rsa15.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "OPCFoundation.NetStandard.Opc.Ua.Core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.5.374.158"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/OPCFoundation/UA-.NETStandard/security/advisories/GHSA-h958-fxgg-g7w3"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-42512"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/OPCFoundation/UA-.NETStandard/commit/3543d0292556691f681e39145e2de4526b90487d"
  }, {
    "type" : "WEB",
    "url" : "https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2024-42512.pdf"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/OPCFoundation/UA-.NETStandard"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-208", "CWE-639" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-03-03T20:10:59Z",
    "nvd_published_at" : null
  }
}