Ubuntu Security Notice USN-7105-1

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Ubuntu Security Notice USN-7105-1
November 12, 2024

dotnet9 vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 24.10

Summary:

Several security issues were fixed in .NET.

Software Description:
– dotnet9: .NET CLI tools and runtime

Details:

It was discovered that the NrbfDecoder component in .NET did not properly
handle an instance of a type confusion vulnerability. An authenticated
attacker could possibly use this issue to gain the privileges of another
user and execute arbitrary code. (CVE-2024-43498)

It was discovered that the NrbfDecoder component in .NET did not properly
perform input validation. An unauthenticated remote attacker could possibly
use this issue to cause a denial of service. (CVE-2024-43499)

Update instructions:

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

Ubuntu 24.10
aspnetcore-runtime-9.0 9.0.0-rtm-0ubuntu1~24.10.1
dotnet-host-9.0 9.0.0-rtm-0ubuntu1~24.10.1
dotnet-hostfxr-9.0 9.0.0-rtm-0ubuntu1~24.10.1
dotnet-runtime-9.0 9.0.0-rtm-0ubuntu1~24.10.1
dotnet-sdk-9.0 9.0.100-rtm-0ubuntu1~24.10.1
dotnet-sdk-aot-9.0 9.0.100-rtm-0ubuntu1~24.10.1
dotnet9 9.0.100-9.0.0-0ubuntu1~24.10.1

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

References:
https://ubuntu.com/security/notices/USN-7105-1
CVE-2024-43498, CVE-2024-43499

Package Information:
https://launchpad.net/ubuntu/+source/dotnet9/9.0.100-9.0.0-0ubuntu1~24.10.1