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USN-6278-2: .NET vulnerabilities

10 August 2023

Several security issues were fixed in .NET.

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Releases

Packages

  • dotnet6 - dotNET CLI tools and runtime
  • dotnet7 - dotNET CLI tools and runtime

Details

USN-6278-1 fixed several vulnerabilities in .NET. This update
provides the corresponding updates for Ubuntu 22.04 LTS.

Original advisory details:

It was discovered that .NET did properly handle the execution of
certain commands. An attacker could possibly use this issue to
achieve remote code execution. (CVE-2023-35390)

Benoit Foucher discovered that .NET did not properly implement the
QUIC stream limit in HTTP/3. An attacker could possibly use this
issue to cause a denial of service. (CVE-2023-38178)

It was discovered that .NET did not properly handle the disconnection
of potentially malicious clients interfacing with a Kestrel server. An
attacker could possibly use this issue to cause a denial of service.
(CVE-2023-38180)

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Update instructions

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

Ubuntu 22.04

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

References

Related notices

  • USN-6278-1: netstandard-targeting-pack-2.1, dotnet-runtime-6.0, dotnet7, dotnet-apphost-pack-6.0, dotnet6, dotnet-host, dotnet-targeting-pack-7.0, aspnetcore-runtime-7.0, dotnet-hostfxr-6.0, aspnetcore-targeting-pack-6.0, dotnet-sdk-7.0, dotnet-templates-7.0, dotnet-sdk-6.0-source-built-artifacts, dotnet-runtime-7.0, dotnet-templates-6.0, dotnet-targeting-pack-6.0, aspnetcore-targeting-pack-7.0, dotnet-apphost-pack-7.0, netstandard-targeting-pack-2.1-7.0, dotnet-sdk-7.0-source-built-artifacts, dotnet-sdk-6.0, aspnetcore-runtime-6.0, dotnet-hostfxr-7.0, dotnet-host-7.0

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Further reading