{"id":"USN-6438-2","summary":".Net regressions","details":"USN-6438-1 fixed vulnerabilities in .Net. It was discovered that the fix\nfor [CVE-2023-36799](https://ubuntu.com/security/CVE-2023-36799) was incomplete. This update fixes the problem.\n\nOriginal advisory details:\n\n Kevin Jones discovered that .NET did not properly process certain\n X.509 certificates. An attacker could possibly use this issue to\n cause a denial of service. (CVE-2023-36799)\n \n It was discovered that the .NET Kestrel web server did not properly\n handle HTTP/2 requests. A remote attacker could possibly use this\n issue to cause a denial of service. (CVE-2023-44487)\n","modified":"2026-02-04T02:30:56.108338Z","published":"2023-10-25T03:44:47.079002Z","related":["CVE-2023-36799","UBUNTU-CVE-2023-36799"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6438-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-36799"},{"type":"REPORT","url":"https://launchpad.net/bugs/2040207"},{"type":"REPORT","url":"https://launchpad.net/bugs/2040208"}],"affected":[{"package":{"name":"dotnet6","ecosystem":"Ubuntu:23.10","purl":"pkg:deb/ubuntu/dotnet6@6.0.124-0ubuntu1~23.10.1?arch=source&distro=mantic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.124-0ubuntu1~23.10.1"}]}],"versions":["6.0.116-0ubuntu2","6.0.116-0ubuntu3","6.0.118-0ubuntu1","6.0.119-0ubuntu1","6.0.120-0ubuntu1","6.0.120-0ubuntu2","6.0.121-0ubuntu1","6.0.123-0ubuntu1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"6.0.124-0ubuntu1~23.10.1","binary_name":"aspnetcore-runtime-6.0"},{"binary_version":"6.0.124-0ubuntu1~23.10.1","binary_name":"aspnetcore-targeting-pack-6.0"},{"binary_version":"6.0.124-0ubuntu1~23.10.1","binary_name":"dotnet-apphost-pack-6.0"},{"binary_version":"6.0.124-0ubuntu1~23.10.1","binary_name":"dotnet-apphost-pack-6.0-dbgsym"},{"binary_version":"6.0.124-0ubuntu1~23.10.1","binary_name":"dotnet-host"},{"binary_version":"6.0.124-0ubuntu1~23.10.1","binary_name":"dotnet-host-dbgsym"},{"binary_version":"6.0.124-0ubuntu1~23.10.1","binary_name":"dotnet-hostfxr-6.0"},{"binary_version":"6.0.124-0ubuntu1~23.10.1","binary_name":"dotnet-hostfxr-6.0-dbgsym"},{"binary_version":"6.0.124-0ubuntu1~23.10.1","binary_name":"dotnet-runtime-6.0"},{"binary_version":"6.0.124-0ubuntu1~23.10.1","binary_name":"dotnet-runtime-6.0-dbgsym"},{"binary_version":"6.0.124-0ubuntu1~23.10.1","binary_name":"dotnet-sdk-6.0"},{"binary_version":"6.0.124-0ubuntu1~23.10.1","binary_name":"dotnet-sdk-6.0-dbgsym"},{"binary_version":"6.0.124-0ubuntu1~23.10.1","binary_name":"dotnet-sdk-6.0-source-built-artifacts"},{"binary_version":"6.0.124-0ubuntu1~23.10.1","binary_name":"dotnet-targeting-pack-6.0"},{"binary_version":"6.0.124-0ubuntu1~23.10.1","binary_name":"dotnet-templates-6.0"},{"binary_version":"6.0.124-0ubuntu1~23.10.1","binary_name":"dotnet6"},{"binary_version":"6.0.124-0ubuntu1~23.10.1","binary_name":"netstandard-targeting-pack-2.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6438-2.json"}},{"package":{"name":"dotnet7","ecosystem":"Ubuntu:23.10","purl":"pkg:deb/ubuntu/dotnet7@7.0.113-0ubuntu1~23.10.1?arch=source&distro=mantic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.0.113-0ubuntu1~23.10.1"}]}],"versions":["7.0.105-0ubuntu2","7.0.105-0ubuntu3","7.0.107-0ubuntu1","7.0.108-0ubuntu2","7.0.109-0ubuntu1","7.0.109-0ubuntu2","7.0.110-0ubuntu1","7.0.112-0ubuntu1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"7.0.113-0ubuntu1~23.10.1","binary_name":"aspnetcore-runtime-7.0"},{"binary_version":"7.0.113-0ubuntu1~23.10.1","binary_name":"aspnetcore-targeting-pack-7.0"},{"binary_version":"7.0.113-0ubuntu1~23.10.1","binary_name":"dotnet-apphost-pack-7.0"},{"binary_version":"7.0.113-0ubuntu1~23.10.1","binary_name":"dotnet-apphost-pack-7.0-dbgsym"},{"binary_version":"7.0.113-0ubuntu1~23.10.1","binary_name":"dotnet-host-7.0"},{"binary_version":"7.0.113-0ubuntu1~23.10.1","binary_name":"dotnet-host-7.0-dbgsym"},{"binary_version":"7.0.113-0ubuntu1~23.10.1","binary_name":"dotnet-hostfxr-7.0"},{"binary_version":"7.0.113-0ubuntu1~23.10.1","binary_name":"dotnet-hostfxr-7.0-dbgsym"},{"binary_version":"7.0.113-0ubuntu1~23.10.1","binary_name":"dotnet-runtime-7.0"},{"binary_version":"7.0.113-0ubuntu1~23.10.1","binary_name":"dotnet-runtime-7.0-dbgsym"},{"binary_version":"7.0.113-0ubuntu1~23.10.1","binary_name":"dotnet-sdk-7.0"},{"binary_version":"7.0.113-0ubuntu1~23.10.1","binary_name":"dotnet-sdk-7.0-dbgsym"},{"binary_version":"7.0.113-0ubuntu1~23.10.1","binary_name":"dotnet-sdk-7.0-source-built-artifacts"},{"binary_version":"7.0.113-0ubuntu1~23.10.1","binary_name":"dotnet-targeting-pack-7.0"},{"binary_version":"7.0.113-0ubuntu1~23.10.1","binary_name":"dotnet-templates-7.0"},{"binary_version":"7.0.113-0ubuntu1~23.10.1","binary_name":"dotnet7"},{"binary_version":"7.0.113-0ubuntu1~23.10.1","binary_name":"netstandard-targeting-pack-2.1-7.0"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6438-2.json"}}],"schema_version":"1.7.3"}