Ubuntu Security Notices
USN-6362-2

USN-6362-2: .Net regressions

Publication date

25 October 2023

Overview

An incomplete fix was discovered in .Net.

Releases

23.04 22.04 LTS

Packages

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

Details

USN-6362-1 fixed vulnerabilities in .Net. It was discovered that the fix
for CVE-2023-36799 was incomplete. This update fixes the problem.

Original advisory details:

Kevin Jones discovered that .NET did not properly process certain
X.509 certificates. An attacker could possibly use this issue to
cause a denial of service.

USN-6362-1 fixed vulnerabilities in .Net. It was discovered that the fix
for CVE-2023-36799 was incomplete. This update fixes the problem.

Original advisory details:

Kevin Jones discovered that .NET did not properly process certain
X.509 certificates. An attacker could possibly use this issue to
cause a denial of service.

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
23.04 lunar	aspnetcore-runtime-6.0 – 6.0.124-0ubuntu1~23.04.1
	aspnetcore-runtime-7.0 – 7.0.113-0ubuntu1~23.04.1
	dotnet-host – 6.0.124-0ubuntu1~23.04.1
	dotnet-host-7.0 – 7.0.113-0ubuntu1~23.04.1
	dotnet-hostfxr-6.0 – 6.0.124-0ubuntu1~23.04.1
	dotnet-hostfxr-7.0 – 7.0.113-0ubuntu1~23.04.1
	dotnet-runtime-6.0 – 6.0.124-0ubuntu1~23.04.1
	dotnet-runtime-7.0 – 7.0.113-0ubuntu1~23.04.1
	dotnet-sdk-6.0 – 6.0.124-0ubuntu1~23.04.1
	dotnet-sdk-7.0 – 7.0.113-0ubuntu1~23.04.1
	dotnet6 – 6.0.124-0ubuntu1~23.04.1
	dotnet7 – 7.0.113-0ubuntu1~23.04.1
22.04 jammy	aspnetcore-runtime-6.0 – 6.0.124-0ubuntu1~22.04.1
	aspnetcore-runtime-7.0 – 7.0.113-0ubuntu1~22.04.1
	dotnet-host – 6.0.124-0ubuntu1~22.04.1
	dotnet-host-7.0 – 7.0.113-0ubuntu1~22.04.1
	dotnet-hostfxr-6.0 – 6.0.124-0ubuntu1~22.04.1
	dotnet-hostfxr-7.0 – 7.0.113-0ubuntu1~22.04.1
	dotnet-runtime-6.0 – 6.0.124-0ubuntu1~22.04.1
	dotnet-runtime-7.0 – 7.0.113-0ubuntu1~22.04.1
	dotnet-sdk-6.0 – 6.0.124-0ubuntu1~22.04.1
	dotnet-sdk-7.0 – 7.0.113-0ubuntu1~22.04.1
	dotnet6 – 6.0.124-0ubuntu1~22.04.1
	dotnet7 – 7.0.113-0ubuntu1~22.04.1

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References

CVE-2023-36799