medium
5.5
Advisory Published
Updated

CVE-2020-1476: ASP.NET and .NET Elevation of Privilege Vulnerability

First published: Mon Aug 17 2020(Updated: )

An elevation of privilege vulnerability exists when ASP.NET or .NET web applications running on IIS improperly allow access to cached files, aka 'ASP.NET and .NET Elevation of Privilege Vulnerability'.

Credit: secure@microsoft.com

Affected SoftwareAffected VersionHow to fix
Microsoft .NET Framework 4=2.0-sp2
Microsoft Windows Server=sp2
Microsoft .NET Framework 4=3.5
Microsoft Windows
Microsoft Windows Server
Microsoft Windows Server=r2
Microsoft .NET Framework 4=4.6.2
Microsoft .NET Framework 4=4.7
Microsoft .NET Framework 4=4.7.1
Microsoft .NET Framework 4=4.7.2
Windows 10=1607
Microsoft Windows Server 2016
Microsoft .NET Framework 4=4.6
Microsoft .NET Framework 4=4.6.1
Windows 10
Windows 10=1709
Windows 10=1803
Windows 10=1809
Microsoft Windows Server 2019
Microsoft .NET Framework 4=4.8
Windows 10=1903
Windows 10=1909
Windows 10=2004
Microsoft .NET Framework 4=3.5.1
Microsoft Windows 7=sp1
Microsoft Windows Server=r2
Microsoft .NET Framework 4=4.5.2
Microsoft Windows 7=sp1
Microsoft Windows RT
Microsoft Windows Server=r2-sp1
All of
Microsoft .NET Framework 4=2.0-sp2
Microsoft Windows Server=sp2
All of
Microsoft .NET Framework 4=3.5
Any of
Microsoft Windows
Microsoft Windows Server
Microsoft Windows Server=r2
All of
Any of
Microsoft .NET Framework 4=3.5
Microsoft .NET Framework 4=4.6.2
Microsoft .NET Framework 4=4.7
Microsoft .NET Framework 4=4.7.1
Microsoft .NET Framework 4=4.7.2
Any of
Windows 10=1607
Microsoft Windows Server 2016
All of
Any of
Microsoft .NET Framework 4=3.5
Microsoft .NET Framework 4=4.6
Microsoft .NET Framework 4=4.6.1
Microsoft .NET Framework 4=4.6.2
Windows 10
All of
Any of
Microsoft .NET Framework 4=3.5
Microsoft .NET Framework 4=4.7.1
Microsoft .NET Framework 4=4.7.2
Windows 10=1709
All of
Any of
Microsoft .NET Framework 4=3.5
Microsoft .NET Framework 4=4.7.2
Any of
Windows 10=1803
Windows 10=1809
Microsoft Windows Server 2019
All of
Any of
Microsoft .NET Framework 4=3.5
Microsoft .NET Framework 4=4.8
Any of
Windows 10=1809
Windows 10=1903
Windows 10=1909
Windows 10=2004
Microsoft Windows Server 2019
All of
Microsoft .NET Framework 4=3.5.1
Any of
Microsoft Windows 7=sp1
Microsoft Windows Server=r2
All of
Microsoft .NET Framework 4=4.5.2
Any of
Microsoft Windows 7=sp1
Microsoft Windows
Microsoft Windows RT
Microsoft Windows Server=sp2
Microsoft Windows Server=r2-sp1
Microsoft Windows Server
Microsoft Windows Server=r2
All of
Microsoft .NET Framework 4=4.6
Microsoft Windows Server=sp2
All of
Any of
Microsoft .NET Framework 4=4.6
Microsoft .NET Framework 4=4.6.1
Microsoft .NET Framework 4=4.6.2
Microsoft .NET Framework 4=4.7
Microsoft .NET Framework 4=4.7.1
Microsoft .NET Framework 4=4.7.2
Any of
Microsoft Windows 7=sp1
Microsoft Windows
Microsoft Windows RT
Microsoft Windows Server=r2-sp1
Microsoft Windows Server
Microsoft Windows Server=r2
All of
Microsoft .NET Framework 4=4.8
Any of
Windows 10=1607
Windows 10=1709
Windows 10=1803
Microsoft Windows 7=sp1
Microsoft Windows
Microsoft Windows RT
Microsoft Windows Server=r2-sp1
Microsoft Windows Server
Microsoft Windows Server=r2
Microsoft Windows Server 2016

Remedy

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1476

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Reference Links

Frequently Asked Questions

  • What is CVE-2020-1476?

    CVE-2020-1476 is an elevation of privilege vulnerability that exists when ASP.NET or .NET web applications running on IIS improperly allow access to cached files.

  • Which software is affected by CVE-2020-1476?

    The affected software includes Microsoft .NET Framework 2.0 SP2, Microsoft .NET Framework 3.5, Microsoft .NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2, and 4.8.

  • What is the severity of CVE-2020-1476?

    CVE-2020-1476 has a severity rating of 5.5 (medium).

  • How can I fix CVE-2020-1476?

    To fix CVE-2020-1476, it is recommended to apply the latest security updates provided by Microsoft.

  • Where can I find more information about CVE-2020-1476?

    You can find more information about CVE-2020-1476 on the Microsoft Security Guidance Advisory page.

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