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Ubuntu 22.04: USN-5609-1 Critical: .NET 6 DoS Attack Preparation

ubuntu
Calendar Grey September 13, 2022
Dist Ubuntu Esm H88
Enhance your Ubuntu installation to address the .NET 6 failure highlighted in USN-5609-1. Discover further details regarding the resolution.
.NET 6 could be made to crash if it parsed a specially crafted file.

Summary

.NET 6 could be made to crash if it parsed a specially crafted file.

Software Description:

- dotnet6: dotNET CLI tools and runtime

Details:

Graham Esau discovered that .NET 6 incorrectly parsed certain payloads

during model binding. An attacker could possibly use this issue to

cause a denial of service.

Topics%20covered

Topics Covered

security advisory critical DoS Ubuntu dotnet6

Update Instructions

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

Ubuntu 22.04 LTS:
   aspnetcore-runtime-6.0          6.0.109-0ubuntu1~22.04.1
   dotnet-host                             6.0.109-0ubuntu1~22.04.1
   dotnet-hostfxr-6.0                   6.0.109-0ubuntu1~22.04.1
   dotnet-runtime-6.0                  6.0.109-0ubuntu1~22.04.1
   dotnet-sdk-6.0                        6.0.109-0ubuntu1~22.04.1
   dotnet6                                   6.0.109-0ubuntu1~22.04.1

In general, a standard system update will make all the necessary 
changes. A restart may be required after the update if any affected 
files are being used.

References

https://ubuntu.com/security/notices/USN-5609-1

CVE-2022-38013

Severity
critical
Lowest
Low
Medium
High
Critical

September 13, 2022

Topics%20covered

Topics Covered

security advisory critical DoS Ubuntu dotnet6

Package Information

https://launchpad.net/ubuntu/+source/dotnet6/6.0.109-0ubuntu1~22.04.1

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