[USN-6438-1] .NET vulnerabilities
Ian Constantin
ian.constantin at canonical.com
Thu Oct 19 18:11:18 UTC 2023
==========================================================================
Ubuntu Security Notice USN-6438-1
October 19, 2023
dotnet6, dotnet7 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 23.10
Summary:
Several security issues were fixed in dotnet6, dotnet7.
Software Description:
- dotnet6: dotNET CLI tools and runtime
- dotnet7: dotNET CLI tools and runtime
Details:
Kevin Jones discovered that .NET did not properly process certain
X.509 certificates. An attacker could possibly use this issue to
cause a denial of service. (CVE-2023-36799)
It was discovered that the .NET Kestrel web server did not properly
handle HTTP/2 requests. A remote attacker could possibly use this
issue to cause a denial of service. (CVE-2023-44487)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 23.10:
aspnetcore-runtime-6.0 6.0.123-0ubuntu1
aspnetcore-runtime-7.0 7.0.112-0ubuntu1
dotnet-host 6.0.123-0ubuntu1
dotnet-host-7.0 7.0.112-0ubuntu1
dotnet-hostfxr-6.0 6.0.123-0ubuntu1
dotnet-hostfxr-7.0 7.0.112-0ubuntu1
dotnet-runtime-6.0 6.0.123-0ubuntu1
dotnet-runtime-7.0 7.0.112-0ubuntu1
dotnet-sdk-6.0 6.0.123-0ubuntu1
dotnet-sdk-7.0 7.0.112-0ubuntu1
dotnet6 6.0.123-0ubuntu1
dotnet7 7.0.112-0ubuntu1
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-6438-1
CVE-2023-36799, CVE-2023-44487
Package Information:
https://launchpad.net/ubuntu/+source/dotnet6/6.0.123-0ubuntu1
https://launchpad.net/ubuntu/+source/dotnet7/7.0.112-0ubuntu1
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