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Ubuntu 23.04 USN-6279-1 High Risk: Java Serialization Flaw and Crash

ubuntu
Calendar Grey August 8, 2023
Dist Ubuntu Esm H88
Ubuntu Security Notice USN-6278-1 addresses multiple .NET security vulnerabilities that may result in remote code execution or denial of service (DoS) threats
Several security issues were fixed in .NET.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 23.04 Summary: Several security issues were fixed in .NET. Software Description: - dotnet6: dotNET CLI tools and runtime - dotnet7: dotNET CLI tools and runtime Details: It was discovered that .NET did not 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)

Topics%20covered

Topics Covered

security advisory denial of service critical remote code execution Ubuntu dotnet

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 23.04:    aspnetcore-runtime-6.0          6.0.121-0ubuntu1~23.04.1    aspnetcore-runtime-7.0          7.0.110-0ubuntu1~23.04.1    dotnet-host 6.0.121-0ubuntu1~23.04.1    dotnet-host-7.0                       7.0.110-0ubuntu1~23.04.1    dotnet-hostfxr-6.0                   6.0.121-0ubuntu1~23.04.1    dotnet-hostfxr-7.0                   7.0.110-0ubuntu1~23.04.1    dotnet-runtime-6.0                  6.0.121-0ubuntu1~23.04.1    dotnet-runtime-7.0                  7.0.110-0ubuntu1~23.04.1    dotnet-sdk-6.0                        6.0.121-0ubuntu1~23.04.1    dotnet-sdk-7.0                        7.0.110-0ubuntu1~23.04.1    dotnet6 6.0.121-0ubuntu1~23.04.1    dotnet7 7.0.110-0ubuntu1~23.04.1 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-6278-1

   CVE-2023-35390, CVE-2023-38178, CVE-2023-38180

Ubuntu Security Notice USN-6278-1

Topics%20covered

Topics Covered

security advisory denial of service critical remote code execution Ubuntu dotnet

Package Information

https://launchpad.net/ubuntu/+source/dotnet6/6.0.121-0ubuntu1~23.04.1 https://launchpad.net/ubuntu/+source/dotnet7/7.0.110-0ubuntu1~23.04.1

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