First published: Tue Jun 06 2023(Updated: )
.NET Kestrel: Denial of Service processing X509 Certificates When a .NET application is internet-facing and accepts an X509 client certificate for mutual TLS, a malicious client certificate can cause unbounded CPU usage.
Credit: secure@microsoft.com secure@microsoft.com secure@microsoft.com
Affected Software | Affected Version | How to fix |
---|---|---|
nuget/Microsoft.NetCore.App.Runtime.win-x86 | >=6.0.0<=6.0.16 | 6.0.18 |
nuget/Microsoft.NetCore.App.Runtime.win-x86 | >=7.0.0<=7.0.5 | 7.0.7 |
nuget/Microsoft.NetCore.App.Runtime.win-x64 | >=7.0.0<=7.0.5 | 7.0.7 |
nuget/Microsoft.NetCore.App.Runtime.win-x64 | >=6.0.0<=6.0.16 | 6.0.18 |
nuget/Microsoft.NetCore.App.Runtime.win-arm64 | >=7.0.0<=7.0.5 | 7.0.7 |
nuget/Microsoft.NetCore.App.Runtime.win-arm64 | >=6.0.0<=6.0.16 | 6.0.18 |
nuget/Microsoft.NetCore.App.Runtime.win-arm | >=7.0.0<=7.0.5 | 7.0.7 |
nuget/Microsoft.NetCore.App.Runtime.win-arm | >=6.0.0<=6.0.16 | 6.0.18 |
nuget/Microsoft.NetCore.App.Runtime.osx-x64 | >=7.0.0<=7.0.5 | 7.0.7 |
nuget/Microsoft.NetCore.App.Runtime.osx-x64 | >=6.0.0<=6.0.16 | 6.0.18 |
nuget/Microsoft.NetCore.App.Runtime.osx-arm64 | >=7.0.0<=7.0.5 | 7.0.7 |
nuget/Microsoft.NetCore.App.Runtime.osx-arm64 | >=6.0.0<=6.0.16 | 6.0.18 |
nuget/Microsoft.NetCore.App.Runtime.linux-x64 | >=7.0.0<=7.0.5 | 7.0.7 |
nuget/Microsoft.NetCore.App.Runtime.linux-x64 | >=6.0.0<=6.0.16 | 6.0.18 |
nuget/Microsoft.NetCore.App.Runtime.linux-musl-x64 | >=7.0.0<=7.0.5 | 7.0.7 |
nuget/Microsoft.NetCore.App.Runtime.linux-musl-x64 | >=6.0.0<=6.0.16 | 6.0.18 |
nuget/Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >=6.0.0<=6.0.16 | 6.0.18 |
nuget/Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >=7.0.0<=7.0.5 | 7.0.7 |
nuget/Microsoft.NetCore.App.Runtime.linux-musl-arm | >=6.0.0<=6.0.16 | 6.0.18 |
nuget/Microsoft.NetCore.App.Runtime.linux-musl-arm | >=7.0.0<=7.0.5 | 7.0.7 |
nuget/Microsoft.NetCore.App.Runtime.linux-arm64 | >=7.0.0<=7.0.5 | 7.0.7 |
nuget/Microsoft.NetCore.App.Runtime.linux-arm64 | >=6.0.0<=6.0.16 | 6.0.18 |
nuget/Microsoft.NetCore.App.Runtime.linux-arm | >=6.0.0<=6.0.16 | 6.0.18 |
nuget/Microsoft.NetCore.App.Runtime.linux-arm | >=7.0.0<=7.0.5 | 7.0.7 |
nuget/System.Security.Cryptography.Pkcs | >=6.0.0<=6.0.2 | 6.0.3 |
nuget/System.Security.Cryptography.Pkcs | >=7.0.0<=7.0.1 | 7.0.2 |
nuget/Microsoft.Windows.Compatibility | >=6.0.0<=6.0.4 | 6.0.6 |
nuget/Microsoft.Windows.Compatibility | >=7.0.0<=7.0.1 | 7.0.3 |
Microsoft .NET Framework | =4.8 | |
Microsoft Windows 10 1607 | ||
Microsoft Windows 10 1607 | ||
Microsoft Windows Server 2008 | =r2-sp1 | |
Microsoft Windows Server 2012 | ||
Microsoft Windows Server 2012 | =r2 | |
Microsoft Windows Server 2016 | ||
Microsoft .NET Framework | =4.6.2 | |
Microsoft .NET Framework | =4.7 | |
Microsoft .NET Framework | =4.7.1 | |
Microsoft .NET Framework | =4.7.2 | |
Microsoft Windows Server 2008 | =sp2 | |
Microsoft Windows Server 2008 | =sp2 | |
Microsoft .NET Framework | =3.5.1 | |
Microsoft .NET Framework | =3.5 | |
Microsoft Windows 10 1507 | ||
Microsoft Windows 10 1507 | ||
Microsoft .NET Framework | =4.8.1 | |
Microsoft Windows 10 21h2 | ||
Microsoft Windows 10 21h2 | ||
Microsoft Windows 10 21h2 | ||
Microsoft Windows 10 22h2 | ||
Microsoft Windows 10 22h2 | ||
Microsoft Windows 10 22h2 | ||
Microsoft Windows 11 21h2 | ||
Microsoft Windows 11 21h2 | ||
Microsoft Windows 11 22h2 | ||
Microsoft Windows 11 22h2 | ||
Microsoft Windows Server 2022 | ||
Microsoft Windows 10 1809 | ||
Microsoft Windows 10 1809 | ||
Microsoft Windows Server 2019 | ||
Microsoft .NET Framework | =3.0-sp2 | |
Microsoft .NET Framework | =2.0-sp2 | |
Microsoft .NET | =6.0.0 | |
Microsoft .NET | =7.0.0 | |
Microsoft .NET Framework | =3.5 | |
Microsoft .NET Framework | =4.6.2 | |
Microsoft .NET Framework | =3.5=4.8.1 | |
Microsoft .NET Framework | =4.8 | |
Microsoft Visual Studio 2022 | =17.6 | |
Microsoft .NET Framework | =4.8 | |
Microsoft .NET Framework | =3.5 | |
Microsoft .NET Framework | =4.8 | |
Microsoft .NET Framework | =4.6.2=4.7=4.7.1=4.7.2 | |
Microsoft .NET 7.0 | ||
Microsoft .NET Framework | =3.5=4.7.2 | |
Microsoft PowerShell 7.2 | ||
Microsoft .NET Framework | =3.5=4.6.2=4.7=4.7.1=4.7.2 | |
Microsoft .NET Framework | =3.5=4.8.1 | |
Microsoft .NET Framework | =4.8 | |
Microsoft .NET Framework | =3.5.1 | |
Microsoft .NET Framework | =3.5=4.8.1 | |
Microsoft .NET 6.0 | ||
Microsoft Visual Studio 2022 | =17.0 | |
Microsoft .NET Framework | =3.5=4.8 | |
Microsoft .NET Framework | =3.0 | |
Microsoft .NET Framework | =4.6.2=4.7=4.7.1=4.7.2 | |
Microsoft .NET Framework | =3.5=4.8 | |
Microsoft .NET Framework | =4.6.2=4.7=4.7.1=4.7.2 | |
Microsoft .NET Framework and 4.6.2 | =3.5 | |
Microsoft .NET Framework | =2.0 | |
Microsoft .NET Framework | =3.5=4.8.1 | |
Microsoft .NET Framework | =3.5=4.7.2 | |
Microsoft .NET Framework | =3.5=4.8 | |
Microsoft .NET Framework | =3.5=4.8 | |
Microsoft .NET Framework | =3.5=4.8.1 | |
Microsoft Visual Studio 2022 | =17.2 | |
Microsoft .NET Framework | =2.0 | |
Microsoft .NET Framework | =3.0 | |
Microsoft PowerShell 7.3 | ||
All of | ||
Any of | ||
Microsoft Windows 10 1607 | ||
Microsoft Windows 10 1607 | ||
Microsoft Windows Server 2008 | =r2-sp1 | |
Microsoft Windows Server 2012 | ||
Microsoft Windows Server 2012 | =r2 | |
Microsoft Windows Server 2016 | ||
Microsoft .NET Framework | =4.8 | |
All of | ||
Any of | ||
Microsoft Windows Server 2008 | =r2-sp1 | |
Microsoft Windows Server 2012 | ||
Microsoft Windows Server 2012 | =r2 | |
Any of | ||
Microsoft .NET Framework | =4.6.2 | |
Microsoft .NET Framework | =4.7 | |
Microsoft .NET Framework | =4.7.1 | |
Microsoft .NET Framework | =4.7.2 | |
All of | ||
Any of | ||
Microsoft Windows Server 2008 | =sp2 | |
Microsoft Windows Server 2008 | =sp2 | |
Microsoft Windows Server 2012 | ||
Microsoft Windows Server 2012 | =r2 | |
Microsoft .NET Framework | =4.6.2 | |
All of | ||
Microsoft Windows Server 2008 | =r2-sp1 | |
Microsoft .NET Framework | =3.5.1 | |
All of | ||
Any of | ||
Microsoft Windows 10 1507 | ||
Microsoft Windows 10 1507 | ||
Any of | ||
Microsoft .NET Framework | =3.5 | |
Microsoft .NET Framework | =4.6.2 | |
All of | ||
Any of | ||
Microsoft Windows 10 1607 | ||
Microsoft Windows 10 1607 | ||
Microsoft Windows 10 21h2 | ||
Microsoft Windows 10 21h2 | ||
Microsoft Windows 10 21h2 | ||
Microsoft Windows 10 22h2 | ||
Microsoft Windows 10 22h2 | ||
Microsoft Windows 10 22h2 | ||
Microsoft Windows 11 21h2 | ||
Microsoft Windows 11 21h2 | ||
Microsoft Windows 11 22h2 | ||
Microsoft Windows 11 22h2 | ||
Microsoft Windows Server 2022 | ||
Any of | ||
Microsoft .NET Framework | =3.5 | |
Microsoft .NET Framework | =4.8.1 | |
All of | ||
Any of | ||
Microsoft .NET Framework | =3.5 | |
Microsoft .NET Framework | =4.8 | |
Any of | ||
Microsoft Windows 10 1607 | ||
Microsoft Windows 10 1607 | ||
Microsoft Windows 10 1809 | ||
Microsoft Windows 10 1809 | ||
Microsoft Windows 10 21h2 | ||
Microsoft Windows 10 21h2 | ||
Microsoft Windows 10 21h2 | ||
Microsoft Windows 10 22h2 | ||
Microsoft Windows 10 22h2 | ||
Microsoft Windows 10 22h2 | ||
Microsoft Windows 11 21h2 | ||
Microsoft Windows 11 21h2 | ||
Microsoft Windows 11 22h2 | ||
Microsoft Windows 11 22h2 | ||
Microsoft Windows Server 2019 | ||
Microsoft Windows Server 2022 | ||
All of | ||
Any of | ||
Microsoft .NET Framework | =3.5 | |
Microsoft .NET Framework | =4.7.2 | |
Any of | ||
Microsoft Windows 10 1809 | ||
Microsoft Windows 10 1809 | ||
Microsoft Windows Server 2019 | ||
All of | ||
Any of | ||
Microsoft .NET Framework | =3.5 | |
Microsoft .NET Framework | =4.6.2 | |
Microsoft .NET Framework | =4.7 | |
Microsoft .NET Framework | =4.7.1 | |
Microsoft .NET Framework | =4.7.2 | |
Any of | ||
Microsoft Windows 10 1607 | ||
Microsoft Windows 10 1607 | ||
Microsoft Windows Server 2016 | ||
All of | ||
Microsoft .NET Framework | =3.5 | |
Any of | ||
Microsoft Windows Server 2012 | ||
Microsoft Windows Server 2012 | =r2 | |
All of | ||
Microsoft .NET Framework | =3.0-sp2 | |
Any of | ||
Microsoft Windows Server 2008 | =sp2 | |
Microsoft Windows Server 2008 | =sp2 | |
All of | ||
Microsoft .NET Framework | =2.0-sp2 | |
Any of | ||
Microsoft Windows Server 2008 | =sp2 | |
Microsoft Windows Server 2008 | =sp2 | |
All of | ||
Any of | ||
=r2-sp1 | ||
=r2 | ||
=4.8 | ||
All of | ||
Any of | ||
=r2-sp1 | ||
=r2 | ||
Any of | ||
=4.6.2 | ||
=4.7 | ||
=4.7.1 | ||
=4.7.2 | ||
All of | ||
Any of | ||
=sp2 | ||
=sp2 | ||
=r2 | ||
=4.6.2 | ||
All of | ||
=r2-sp1 | ||
=3.5.1 | ||
All of | ||
Any of | ||
Any of | ||
=3.5 | ||
=4.6.2 | ||
All of | ||
Any of | ||
Any of | ||
=3.5 | ||
=4.8.1 | ||
All of | ||
Any of | ||
=3.5 | ||
=4.8 | ||
Any of | ||
All of | ||
Any of | ||
=3.5 | ||
=4.7.2 | ||
Any of | ||
All of | ||
Any of | ||
=3.5 | ||
=4.6.2 | ||
=4.7 | ||
=4.7.1 | ||
=4.7.2 | ||
Any of | ||
All of | ||
=3.5 | ||
Any of | ||
=r2 | ||
All of | ||
=3.0-sp2 | ||
Any of | ||
=sp2 | ||
=sp2 | ||
All of | ||
=2.0-sp2 | ||
Any of | ||
=sp2 | ||
=sp2 | ||
=6.0.0 | ||
=7.0.0 |
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