{"id":"UBUNTU-CVE-2023-21538","details":".NET Denial of Service Vulnerability","modified":"2026-01-30T01:55:31.313849Z","published":"2023-01-10T00:00:00Z","related":["USN-5798-1"],"upstream":["CVE-2023-21538"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-21538"},{"type":"REPORT","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21538"},{"type":"REPORT","url":"https://devblogs.microsoft.com/dotnet/january-2023-updates/"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5798-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-21538"}],"affected":[{"package":{"name":"dotnet6","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/dotnet6@6.0.113-0ubuntu1~22.04.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.113-0ubuntu1~22.04.1"}]}],"versions":["6.0.108-0ubuntu1~22.04.1","6.0.109-0ubuntu1~22.04.1","6.0.110-0ubuntu1~22.04.1","6.0.111-0ubuntu1~22.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"6.0.113-0ubuntu1~22.04.1","binary_name":"aspnetcore-runtime-6.0"},{"binary_version":"6.0.113-0ubuntu1~22.04.1","binary_name":"aspnetcore-targeting-pack-6.0"},{"binary_version":"6.0.113-0ubuntu1~22.04.1","binary_name":"dotnet-apphost-pack-6.0"},{"binary_version":"6.0.113-0ubuntu1~22.04.1","binary_name":"dotnet-host"},{"binary_version":"6.0.113-0ubuntu1~22.04.1","binary_name":"dotnet-hostfxr-6.0"},{"binary_version":"6.0.113-0ubuntu1~22.04.1","binary_name":"dotnet-runtime-6.0"},{"binary_version":"6.0.113-0ubuntu1~22.04.1","binary_name":"dotnet-sdk-6.0"},{"binary_version":"6.0.113-0ubuntu1~22.04.1","binary_name":"dotnet-sdk-6.0-source-built-artifacts"},{"binary_version":"6.0.113-0ubuntu1~22.04.1","binary_name":"dotnet-targeting-pack-6.0"},{"binary_version":"6.0.113-0ubuntu1~22.04.1","binary_name":"dotnet-templates-6.0"},{"binary_version":"6.0.113-0ubuntu1~22.04.1","binary_name":"dotnet6"},{"binary_version":"6.0.113-0ubuntu1~22.04.1","binary_name":"netstandard-targeting-pack-2.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-21538.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}