Microsoft Security Advisory CVE-2023-28260: .NET Remote Code Execution Vulnerability
<a name="executive-summary"></a>Executive summary
Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 7.0 and .NET 6.0. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.
A vulnerability exists in .NET running on Windows where a runtime DLL can be loaded from an unexpected location, resulting in remote code execution.
Announcement
Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/250
<a name="mitigation-factors"></a>Mitigation factors
Microsoft has not identified any mitigating factors for this vulnerability.
<a name="affected-software"></a>Affected software
- Any .NET 7.0 application running on .NET 7.0.4 or earlier.
- Any .NET 6.0 application running on .NET 6.0.15 or earlier.
Advisory FAQ
<a name="how-affected"></a>How do I know if I am affected?
If you have a runtime or SDK with a version listed, or an affected package listed in affected software, you're exposed to the vulnerability.
<a name="how-fix"></a>How do I fix the issue?
- To fix the issue please install the latest version of .NET 6.0 or .NET 7.0. If you have installed one or more .NET SDKs through Visual Studio, Visual Studio will prompt you to update Visual Studio, which will also update your .NET SDKs.
- If you have .NET 6.0 or greater installed, you can list the versions you have installed by running the
dotnet --info command. You will see output like the following;
- If you are using one of the affected packages, please update to the patched version listed above.
.NET Core SDK (reflecting any global.json):
Version: 6.0.300
Commit: 8473146e7d
Runtime Environment:
OS Name: Windows
OS Version: 10.0.18363
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\6.0.300\
Host (useful for support):
Version: 6.0.5
Commit: 8473146e7d
.NET Core SDKs installed:
6.0.300 [C:\Program Files\dotnet\sdk]
.NET Core runtimes installed:
Microsoft.AspNetCore.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
To install additional .NET Core runtimes or SDKs:
https://aka.ms/dotnet-download
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