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.NET Framework, SharePoint Server, and Visual Studio Remote Code Execution Vulnerability

High severity GitHub Reviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Feb 2, 2023

Package

nuget Microsoft.NETCore.App (NuGet)

Affected versions

>= 2.1.0, < 2.1.20

Patched versions

2.1.20
nuget Microsoft.NETCore.App.Runtime.linux-arm (NuGet)
>= 3.1.0, < 3.1.6
3.1.6
nuget Microsoft.NETCore.App.Runtime.linux-arm64 (NuGet)
>= 3.1.0, < 3.1.6
3.1.6
nuget Microsoft.NETCore.App.Runtime.linux-musl-arm64 (NuGet)
>= 3.1.0, < 3.1.6
3.1.6
nuget Microsoft.NETCore.App.Runtime.linux-musl-x64 (NuGet)
>= 3.1.0, < 3.1.6
3.1.6
nuget Microsoft.NETCore.App.Runtime.linux-x64 (NuGet)
>= 3.1.0, < 3.1.6
3.1.6
nuget Microsoft.NETCore.App.Runtime.osx-x64 (NuGet)
>= 3.1.0, < 3.1.6
3.1.6
nuget Microsoft.NETCore.App.Runtime.rhel.6-x64 (NuGet)
>= 3.1.0, < 3.1.6
3.1.6
nuget Microsoft.NETCore.App.Runtime.win-arm (NuGet)
>= 3.1.0, < 3.1.6
3.1.6
nuget Microsoft.NETCore.App.Runtime.win-arm64 (NuGet)
>= 3.1.0, < 3.1.6
3.1.6
nuget Microsoft.NETCore.App.Runtime.win-x64 (NuGet)
>= 3.1.0, < 3.1.6
3.1.6
nuget Microsoft.NETCore.App.Runtime.win-x86 (NuGet)
>= 3.1.0, < 3.1.6
3.1.6

Description

A remote code execution vulnerability exists in .NET Framework, Microsoft SharePoint, and Visual Studio when the software fails to check the source markup of XML file input, aka '.NET Framework, SharePoint Server, and Visual Studio Remote Code Execution Vulnerability'.

References

Published by the National Vulnerability Database Jul 14, 2020
Published to the GitHub Advisory Database May 24, 2022
Reviewed Oct 21, 2022
Last updated Feb 2, 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
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS score

89.091%
(99th percentile)

Weaknesses

No CWEs

CVE ID

CVE-2020-1147

GHSA ID

GHSA-g5vf-38cp-4px9

Source code

No known source code
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