.NET Core is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. A new version of .NET Core that address security vulnerabilities is now available. The updated version is .NET Core Runtime 2.1.11 and SDK 2.1.507. Security Fix: * dotnet: NuGet Tampering Vulnerability * dotnet: timeouts for regular expressions are not enforced * dotnet: infinite loop in URI.TryCreate leading to ASP.Net Core Denial of Service * dotnet: crash in IPAddress.TryCreate leading to ASP.Net Core Denial of Service For more details about the security issue, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section. Bug Fix: * dotnet: new SocketException.Message is empty