==========================================================================
Ubuntu Security Notice USN-6161-1
June 13, 2023

dotnet6, dotnet7 vulnerabilities
==========================================================================

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

- Ubuntu 23.04
- Ubuntu 22.10
- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in .NET.

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

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          6.0.118-0ubuntu1~23.04.1
   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.

References:
   https://ubuntu.com/security/notices/USN-6161-1
   CVE-2023-24936, CVE-2023-29331, CVE-2023-29337, CVE-2023-32032,
   CVE-2023-33128

Package Information:
https://launchpad.net/ubuntu/+source/dotnet6/6.0.118-0ubuntu1~23.04.1
https://launchpad.net/ubuntu/+source/dotnet7/7.0.107-0ubuntu1~23.04.1
https://launchpad.net/ubuntu/+source/dotnet6/6.0.118-0ubuntu1~22.10.1
https://launchpad.net/ubuntu/+source/dotnet7/7.0.107-0ubuntu1~22.10.1
https://launchpad.net/ubuntu/+source/dotnet6/6.0.118-0ubuntu1~22.04.1
https://launchpad.net/ubuntu/+source/dotnet7/7.0.107-0ubuntu1~22.04.1