USN-6161-1: .NET vulnerabilities

13 June 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

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)

Reduce your security exposure

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.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 23.04
Ubuntu 22.10
Ubuntu 22.04

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