USN-7509-1: .NET vulnerability

Publication date

16 May 2025

Overview

.NET could be used to perform spoofing over a network.


Packages

  • dotnet8 - .NET CLI tools and runtime
  • dotnet9 - .NET CLI tools and runtime

Details

It was discovered that .NET did not properly handle file names and paths
under certain conditions. An attacker could possibly use this issue to
perform spoofing over a network.

It was discovered that .NET did not properly handle file names and paths
under certain conditions. An attacker could possibly use this issue to
perform spoofing over a network.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
25.04 plucky aspnetcore-runtime-8.0 –  8.0.16-0ubuntu1~25.04.1
aspnetcore-runtime-9.0 –  9.0.5-0ubuntu1~25.04.1
dotnet-host-8.0 –  8.0.16-0ubuntu1~25.04.1
dotnet-host-9.0 –  9.0.5-0ubuntu1~25.04.1
dotnet-hostfxr-8.0 –  8.0.16-0ubuntu1~25.04.1
dotnet-hostfxr-9.0 –  9.0.5-0ubuntu1~25.04.1
dotnet-runtime-8.0 –  8.0.16-0ubuntu1~25.04.1
dotnet-runtime-9.0 –  9.0.5-0ubuntu1~25.04.1
dotnet-sdk-8.0 –  8.0.116-0ubuntu1~25.04.1
dotnet-sdk-9.0 –  9.0.106-0ubuntu1~25.04.1
dotnet-sdk-aot-9.0 –  9.0.106-0ubuntu1~25.04.1
dotnet8 –  8.0.116-8.0.16-0ubuntu1~25.04.1
dotnet9 –  9.0.106-9.0.5-0ubuntu1~25.04.1
24.10 oracular aspnetcore-runtime-8.0 –  8.0.16-0ubuntu1~24.10.1
aspnetcore-runtime-9.0 –  9.0.5-0ubuntu1~24.10.1
dotnet-apphost-pack-8.0 –  8.0.16-0ubuntu1~24.10.1
dotnet-apphost-pack-9.0 –  9.0.5-0ubuntu1~24.10.1
dotnet-host-8.0 –  8.0.16-0ubuntu1~24.10.1
dotnet-host-9.0 –  9.0.5-0ubuntu1~24.10.1
dotnet-hostfxr-8.0 –  8.0.16-0ubuntu1~24.10.1
dotnet-hostfxr-9.0 –  9.0.5-0ubuntu1~24.10.1
dotnet-runtime-8.0 –  8.0.16-0ubuntu1~24.10.1
dotnet-runtime-9.0 –  9.0.5-0ubuntu1~24.10.1
dotnet-sdk-8.0 –  8.0.116-0ubuntu1~24.10.1
dotnet-sdk-9.0 –  9.0.106-0ubuntu1~24.10.1
dotnet-sdk-aot-9.0 –  9.0.106-0ubuntu1~24.10.1
dotnet8 –  8.0.116-8.0.16-0ubuntu1~24.10.1
dotnet9 –  9.0.106-9.0.5-0ubuntu1~24.10.1
24.04 noble aspnetcore-runtime-8.0 –  8.0.16-0ubuntu1~24.04.1
dotnet-host-8.0 –  8.0.16-0ubuntu1~24.04.1
dotnet-hostfxr-8.0 –  8.0.16-0ubuntu1~24.04.1
dotnet-runtime-8.0 –  8.0.16-0ubuntu1~24.04.1
dotnet-sdk-8.0 –  8.0.116-0ubuntu1~24.04.1
dotnet8 –  8.0.116-8.0.16-0ubuntu1~24.04.1
22.04 jammy aspnetcore-runtime-8.0 –  8.0.16-0ubuntu1~22.04.1
dotnet-host-8.0 –  8.0.16-0ubuntu1~22.04.1
dotnet-hostfxr-8.0 –  8.0.16-0ubuntu1~22.04.1
dotnet-runtime-8.0 –  8.0.16-0ubuntu1~22.04.1
dotnet-sdk-8.0 –  8.0.116-0ubuntu1~22.04.1
dotnet8 –  8.0.116-8.0.16-0ubuntu1~22.04.1

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Have additional questions?

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