USN-6161-2: .NET regression

Releases

• Ubuntu 23.04
• Ubuntu 22.10
• Ubuntu 22.04 LTS

Packages

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

Details

USN-6161-1 fixed vulnerabilities in .NET. The update introduced
a regression with regards to how the runtime imported X.509
certificates. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that .NET did not properly enforce certain
restrictions when deserializing a DataSet or DataTable from
XML. An attacker could possibly use this issue to elevate their
privileges. (CVE-2023-24936)

Kevin Jones discovered that .NET did not properly handle the
AIA fetching process for X.509 client certificates. An attacker
could possibly use this issue to cause a denial of service.
(CVE-2023-29331)

Kalle Niemitalo discovered that the .NET package manager,
NuGet, was susceptible to a potential race condition. An
attacker could possibly use this issue to perform remote
code execution. (CVE-2023-29337)

Tom Deseyn discovered that .NET did not properly process certain
arguments when extracting the contents of a tar file. An attacker
could possibly use this issue to elevate their privileges. This
issue only affected the dotnet7 package. (CVE-2023-32032)

It was discovered that .NET did not properly handle memory in
certain circumstances. An attacker could possibly use this issue
to cause a denial of service or perform remote code execution.
(CVE-2023-33128)

Update instructions

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

Ubuntu 23.04

• aspnetcore-runtime-6.0 - 6.0.119-0ubuntu1~23.04.1
• dotnet-hostfxr-7.0 - 7.0.108-0ubuntu1~23.04.1
• dotnet-hostfxr-6.0 - 6.0.119-0ubuntu1~23.04.1
• dotnet-host - 6.0.119-0ubuntu1~23.04.1
• aspnetcore-runtime-7.0 - 7.0.108-0ubuntu1~23.04.1
• dotnet-sdk-6.0 - 6.0.119-0ubuntu1~23.04.1
• dotnet-sdk-7.0 - 7.0.108-0ubuntu1~23.04.1
• dotnet6 - 6.0.119-0ubuntu1~23.04.1
• dotnet7 - 7.0.108-0ubuntu1~23.04.1
• dotnet-runtime-7.0 - 7.0.108-0ubuntu1~23.04.1
• dotnet-runtime-6.0 - 6.0.119-0ubuntu1~23.04.1
• dotnet-host-7.0 - 7.0.108-0ubuntu1~23.04.1

Ubuntu 22.10

• aspnetcore-runtime-6.0 - 6.0.119-0ubuntu1~22.10.1
• dotnet-hostfxr-7.0 - 7.0.108-0ubuntu1~22.10.1
• dotnet-hostfxr-6.0 - 6.0.119-0ubuntu1~22.10.1
• dotnet-host - 6.0.119-0ubuntu1~22.10.1
• aspnetcore-runtime-7.0 - 7.0.108-0ubuntu1~22.10.1
• dotnet-sdk-6.0 - 6.0.119-0ubuntu1~22.10.1
• dotnet-sdk-7.0 - 7.0.108-0ubuntu1~22.10.1
• dotnet6 - 6.0.119-0ubuntu1~22.10.1
• dotnet7 - 7.0.108-0ubuntu1~22.10.1
• dotnet-runtime-7.0 - 7.0.108-0ubuntu1~22.10.1
• dotnet-runtime-6.0 - 6.0.119-0ubuntu1~22.10.1
• dotnet-host-7.0 - 7.0.108-0ubuntu1~22.10.1

Ubuntu 22.04

• aspnetcore-runtime-6.0 - 6.0.119-0ubuntu1~22.04.1
• dotnet-hostfxr-7.0 - 7.0.108-0ubuntu1~22.04.1
• dotnet-hostfxr-6.0 - 6.0.119-0ubuntu1~22.04.1
• dotnet-host - 6.0.119-0ubuntu1~22.04.1
• aspnetcore-runtime-7.0 - 7.0.108-0ubuntu1~22.04.1
• dotnet-sdk-6.0 - 6.0.119-0ubuntu1~22.04.1
• dotnet-sdk-7.0 - 7.0.108-0ubuntu1~22.04.1
• dotnet6 - 6.0.119-0ubuntu1~22.04.1
• dotnet7 - 7.0.108-0ubuntu1~22.04.1
• dotnet-runtime-7.0 - 7.0.108-0ubuntu1~22.04.1
• dotnet-runtime-6.0 - 6.0.119-0ubuntu1~22.04.1
• dotnet-host-7.0 - 7.0.108-0ubuntu1~22.04.1

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

References

• https://launchpad.net/bugs/2024893
• https://launchpad.net/bugs/2024894