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Improper Certificate Validation in Microsoft .NET Framework components

Moderate severity GitHub Reviewed Published May 14, 2022 to the GitHub Advisory Database • Updated Jan 29, 2023

Package

nuget System.Private.ServiceModel (NuGet)

Affected versions

>= 4.0.0, < 4.1.3
>= 4.3.0, < 4.3.3
>= 4.4.0, < 4.4.4
>= 4.5.0, < 4.5.3

Patched versions

4.1.3
4.3.3
4.4.4
4.5.3
nuget System.ServiceModel.Duplex (NuGet)
>= 4.3.0, < 4.3.3
>= 4.4.0, < 4.4.4
>= 4.5.0, < 4.5.3
>= 4.0.0, <= 4.0.2
4.3.3
4.4.4
4.5.3
4.0.4
nuget System.ServiceModel.Http (NuGet)
>= 4.3.0, < 4.3.3
>= 4.4.0, < 4.4.4
>= 4.5.0, < 4.5.3
>= 4.0.0, < 4.1.3
4.3.3
4.4.4
4.5.3
4.1.3
nuget System.ServiceModel.NetTcp (NuGet)
>= 4.3.0, < 4.3.3
>= 4.4.0, < 4.4.4
>= 4.5.0, < 4.5.3
>= 4.0.0, < 4.1.3
4.3.3
4.4.4
4.5.3
4.1.3
nuget System.ServiceModel.Primitives (NuGet)
>= 4.3.0, < 4.3.3
>= 4.4.0, < 4.4.4
>= 4.5.0, < 4.5.3
>= 4.0.0, < 4.1.3
4.3.3
4.4.4
4.5.3
4.1.3
nuget System.ServiceModel.Security (NuGet)
>= 4.3.0, < 4.3.3
>= 4.4.0, < 4.4.4
>= 4.5.0, < 4.5.3
>= 4.0.0, <= 4.0.2
4.3.3
4.4.4
4.5.3
4.0.4

Description

A security feature bypass vulnerability exists when Microsoft .NET Framework components do not correctly validate certificates, aka ".NET Framework Security Feature Bypass Vulnerability." This affects .NET Framework 4.7.2, Microsoft .NET Framework 3.0, Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2, ASP.NET Core 1.1, Microsoft .NET Framework 4.5.2, ASP.NET Core 2.0, ASP.NET Core 1.0, .NET Core 1.1, Microsoft .NET Framework 3.5, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4.6/4.6.1/4.6.2, .NET Core 1.0, .NET Core 2.0, Microsoft .NET Framework 4.6, Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2, Microsoft .NET Framework 4.7.2.

References

Published by the National Vulnerability Database Jul 11, 2018
Published to the GitHub Advisory Database May 14, 2022
Reviewed Jul 8, 2022
Last updated Jan 29, 2023

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
Local
Attack complexity
Low
Privileges required
Low
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:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

EPSS score

0.211%
(60th percentile)

Weaknesses

CVE ID

CVE-2018-8356

GHSA ID

GHSA-p9wx-v264-q34p

Source code

No known source code

Credits

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