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Exposure of Sensitive Information in OPC UA .NET Standard Reference Server

Moderate severity GitHub Reviewed Published May 4, 2023 in OPCFoundation/UA-.NETStandard • Updated Oct 9, 2024

Package

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

Affected versions

< 1.4.371.86

Patched versions

1.4.371.86
nuget OPCFoundation.NetStandard.Opc.Ua.Server (NuGet)
< 1.4.371.86
1.4.371.86

Description

This security update resolves a vulnerability in the OPC UA .NET Standard Reference Server that allows
remote attackers to send malicious requests that expose sensitive information.

https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2023-31048.pdf

References

@opcfoundation-org opcfoundation-org published to OPCFoundation/UA-.NETStandard May 4, 2023
Published to the GitHub Advisory Database May 5, 2023
Reviewed May 5, 2023
Published by the National Vulnerability Database Dec 12, 2023
Last updated Oct 9, 2024

Severity

Moderate

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
Low
Integrity
None
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:L/I:N/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(61st percentile)

Weaknesses

Exposure of Sensitive Information to an Unauthorized Actor

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Learn more on MITRE.

Generation of Error Message Containing Sensitive Information

The product generates an error message that includes sensitive information about its environment, users, or associated data. Learn more on MITRE.

CVE ID

CVE-2023-31048

GHSA ID

GHSA-4cvp-hr63-822j

Source code

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