Ubuntu 6289 Published by

A .NET regression update has been released for Ubuntu Linux 22.04 LTS, 22.10, and 23.04.

Ubuntu Security Notice USN-6161-2
June 23, 2023

dotnet6, dotnet7 regression

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

- Ubuntu 23.04
- Ubuntu 22.10
- Ubuntu 22.04 LTS


USN 6161-1 introduced a regression in .NET that could incorrectly
cause X.509 certificate imports to fail when they should succeed.

Software Description:
- dotnet6: dotNET CLI tools and runtime
- dotnet7: dotNET CLI tools and runtime


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.

 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.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:
Ubuntu 23.04:
   aspnetcore-runtime-6.0         6.0.118-0ubuntu1~23.04.1
   aspnetcore-runtime-7.0         7.0.107-0ubuntu1~23.04.1
   dotnet-host                            6.0.118-0ubuntu1~23.04.1
   dotnet-host-7.0                      7.0.107-0ubuntu1~23.04.1
   dotnet-hostfxr-6.0                  6.0.118-0ubuntu1~23.04.1
   dotnet-hostfxr-7.0                  7.0.107-0ubuntu1~23.04.1
   dotnet-runtime-6.0                 6.0.118-0ubuntu1~23.04.1
   dotnet-runtime-7.0                 7.0.107-0ubuntu1~23.04.1
   dotnet-sdk-6.0                       6.0.118-0ubuntu1~23.04.1
   dotnet-sdk-7.0                       7.0.107-0ubuntu1~23.04.1
   dotnet6                                  6.0.118-0ubuntu1~23.04.1
   dotnet7                                  7.0.107-0ubuntu1~23.04.1

Ubuntu 22.10:
   aspnetcore-runtime-6.0         6.0.118-0ubuntu1~22.10.1
   aspnetcore-runtime-7.0         7.0.107-0ubuntu1~22.10.1
   dotnet-host                             6.0.118-0ubuntu1~22.10.1
   dotnet-host-7.0                      7.0.107-0ubuntu1~22.10.1
   dotnet-hostfxr-6.0                  6.0.118-0ubuntu1~22.10.1
   dotnet-hostfxr-7.0                  7.0.107-0ubuntu1~22.10.1
   dotnet-runtime-6.0                 6.0.118-0ubuntu1~22.10.1
   dotnet-runtime-7.0                 7.0.107-0ubuntu1~22.10.1
   dotnet-sdk-6.0                       6.0.118-0ubuntu1~22.10.1
   dotnet-sdk-7.0                       7.0.107-0ubuntu1~22.10.1
   dotnet6                                  6.0.118-0ubuntu1~22.10.1
   dotnet7                                  7.0.107-0ubuntu1~22.10.1

Ubuntu 22.04 LTS:
   aspnetcore-runtime-6.0          6.0.118-0ubuntu1~22.04.1
   aspnetcore-runtime-7.0          7.0.107-0ubuntu1~22.04.1
   dotnet-host                             6.0.118-0ubuntu1~22.04.1
   dotnet-host-7.0                      7.0.107-0ubuntu1~22.04.1
   dotnet-hostfxr-6.0                  6.0.118-0ubuntu1~22.04.1
   dotnet-hostfxr-7.0                  7.0.107-0ubuntu1~22.04.1
   dotnet-runtime-6.0                 6.0.118-0ubuntu1~22.04.1
   dotnet-runtime-7.0                 7.0.107-0ubuntu1~22.04.1
   dotnet-sdk-6.0                       6.0.118-0ubuntu1~22.04.1
   dotnet-sdk-7.0                       7.0.107-0ubuntu1~22.04.1
   dotnet6                                  6.0.118-0ubuntu1~22.04.1
   dotnet7                                  7.0.107-0ubuntu1~22.04.1

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

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

Package Information: