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Incorrect Implementation of Authentication Algorithm in OPCFoundation.NetStandard.Opc.Ua.Core

High severity GitHub Reviewed Published Jun 15, 2022 in OPCFoundation/UA-.NETStandard • Updated Jan 30, 2023

Package

nuget OPCFoundation.NetStandard.Opc.Ua.Core (NuGet)

Affected versions

<= 1.4.368.53

Patched versions

1.4.368.58

Description

A vulnerability was discovered in the OPC UA .NET Standard Stack that

  • allows a malicious client or server to bypass the application authentication mechanism
  • and allow a connection to an untrusted peer.

References

@opcfoundation-org opcfoundation-org published to OPCFoundation/UA-.NETStandard Jun 15, 2022
Published by the National Vulnerability Database Jun 16, 2022
Published to the GitHub Advisory Database Jun 17, 2022
Reviewed Jun 17, 2022
Last updated Jan 30, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS score

0.379%
(73rd percentile)

Weaknesses

CVE ID

CVE-2022-29865

GHSA ID

GHSA-fvxf-r9fw-49pc

Source code

Credits

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