1. Ubuntu Security Notices
  2. USN-7058-1

USN-7058-1: .NET vulnerabilities

Publication date

8 October 2024

Overview

Several security issues were fixed in dotnet6, dotnet8.

Releases

Packages

  • dotnet6 - .NET CLI tools and runtime
  • dotnet8 - .NET CLI tools and runtime

Details

Brennan Conroy discovered that the .NET Kestrel web server did not
properly handle closing HTTP/3 streams under certain circumstances. An
attacker could possibly use this issue to achieve remote code execution.
This vulnerability only impacted .NET8. (CVE-2024-38229)

It was discovered that .NET components designed to process malicious input
were susceptible to hash flooding attacks. An attacker could possibly use
this issue to cause a denial of service, resulting in a crash.
(CVE-2024-43483)

It was discovered that the .NET System.IO.Packaging namespace did not
properly process SortedList data structures. An attacker could possibly
use this issue to cause a denial of service, resulting in a crash.
(CVE-2024-43484)

It was discovered that .NET did not properly handle the deserialization of
of certain JSON...

Brennan Conroy discovered that the .NET Kestrel web server did not
properly handle closing HTTP/3 streams under certain circumstances. An
attacker could possibly use this issue to achieve remote code execution.
This vulnerability only impacted .NET8. (CVE-2024-38229)

It was discovered that .NET components designed to process malicious input
were susceptible to hash flooding attacks. An attacker could possibly use
this issue to cause a denial of service, resulting in a crash.
(CVE-2024-43483)

It was discovered that the .NET System.IO.Packaging namespace did not
properly process SortedList data structures. An attacker could possibly
use this issue to cause a denial of service, resulting in a crash.
(CVE-2024-43484)

It was discovered that .NET did not properly handle the deserialization of
of certain JSON properties. An attacker could possibly use this issue to
cause a denial of service, resulting in a crash. (CVE-2024-43485)

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
24.04 noble aspnetcore-runtime-8.0 –  8.0.10-0ubuntu1~24.04.1
dotnet-host-8.0 –  8.0.10-0ubuntu1~24.04.1
dotnet-hostfxr-8.0 –  8.0.10-0ubuntu1~24.04.1
dotnet-runtime-8.0 –  8.0.10-0ubuntu1~24.04.1
dotnet-sdk-8.0 –  8.0.110-0ubuntu1~24.04.1
dotnet8 –  8.0.110-8.0.10-0ubuntu1~24.04.1
22.04 jammy aspnetcore-runtime-6.0 –  6.0.135-0ubuntu1~22.04.1
aspnetcore-runtime-8.0 –  8.0.10-0ubuntu1~22.04.1
dotnet-host –  6.0.135-0ubuntu1~22.04.1
dotnet-host-8.0 –  8.0.10-0ubuntu1~22.04.1
dotnet-hostfxr-6.0 –  6.0.135-0ubuntu1~22.04.1
dotnet-hostfxr-8.0 –  8.0.10-0ubuntu1~22.04.1
dotnet-runtime-6.0 –  6.0.135-0ubuntu1~22.04.1
dotnet-runtime-8.0 –  8.0.10-0ubuntu1~22.04.1
dotnet-sdk-6.0 –  6.0.135-0ubuntu1~22.04.1
dotnet-sdk-8.0 –  8.0.110-0ubuntu1~22.04.1
dotnet6 –  6.0.135-0ubuntu1~22.04.1
dotnet8 –  8.0.110-8.0.10-0ubuntu1~22.04.1

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References

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