USN-6278-2: .NET vulnerabilities

Releases

• Ubuntu 22.04 LTS

Packages

• dotnet6 - dotNET CLI tools and runtime
• dotnet7 - dotNET CLI tools and runtime

Details

USN-6278-1 fixed several vulnerabilities in .NET. This update
provides the corresponding updates for Ubuntu 22.04 LTS.

Original advisory details:

It was discovered that .NET did properly handle the execution of
certain commands. An attacker could possibly use this issue to
achieve remote code execution. (CVE-2023-35390)

Benoit Foucher discovered that .NET did not properly implement the
QUIC stream limit in HTTP/3. An attacker could possibly use this
issue to cause a denial of service. (CVE-2023-38178)

It was discovered that .NET did not properly handle the disconnection
of potentially malicious clients interfacing with a Kestrel server. An
attacker could possibly use this issue to cause a denial of service.
(CVE-2023-38180)

Update instructions

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

Ubuntu 22.04

• aspnetcore-runtime-6.0 - 6.0.121-0ubuntu1~22.04.1
• aspnetcore-runtime-7.0 - 7.0.110-0ubuntu1~22.04.1
• dotnet-host - 6.0.121-0ubuntu1~22.04.1
• dotnet-host-7.0 - 7.0.110-0ubuntu1~22.04.1
• dotnet-hostfxr-6.0 - 6.0.121-0ubuntu1~22.04.1
• dotnet-hostfxr-7.0 - 7.0.110-0ubuntu1~22.04.1
• dotnet-runtime-6.0 - 6.0.121-0ubuntu1~22.04.1
• dotnet-runtime-7.0 - 7.0.110-0ubuntu1~22.04.1
• dotnet-sdk-6.0 - 6.0.121-0ubuntu1~22.04.1
• dotnet-sdk-7.0 - 7.0.110-0ubuntu1~22.04.1
• dotnet6 - 6.0.121-0ubuntu1~22.04.1
• dotnet7 - 7.0.110-0ubuntu1~22.04.1

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

References

• CVE-2023-38180
• CVE-2023-35390
• CVE-2023-38178

Related notices

• USN-6278-1