[USN-7509-1] .NET vulnerability

==========================================================================
Ubuntu Security Notice USN-7509-1
May 16, 2025

dotnet8, dotnet9 vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 25.04
- Ubuntu 24.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

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

Software Description:
- 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.

Update instructions:

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

Ubuntu 25.04
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

Ubuntu 24.10
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

Ubuntu 24.04 LTS
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

Ubuntu 22.04 LTS
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

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

References:
https://ubuntu.com/security/notices/USN-7509-1
CVE-2025-26646

Package Information:
https://launchpad.net/ubuntu/+source/dotnet8/8.0.116-8.0.16-0ubuntu1~25.04.1
https://launchpad.net/ubuntu/+source/dotnet9/9.0.106-9.0.5-0ubuntu1~25.04.1
https://launchpad.net/ubuntu/+source/dotnet8/8.0.116-8.0.16-0ubuntu1~24.10.1
https://launchpad.net/ubuntu/+source/dotnet9/9.0.106-9.0.5-0ubuntu1~24.10.1
https://launchpad.net/ubuntu/+source/dotnet8/8.0.116-8.0.16-0ubuntu1~24.04.1
https://launchpad.net/ubuntu/+source/dotnet8/8.0.116-8.0.16-0ubuntu1~22.04.1