core

.NET Core November 2017 Update - Released 11/14/2017

.NET Core 1.0.8, 1.1.5 and SDK 1.1.5 are available for download and usage in your environment.

Downloads

After installing the .NET Core SDK 1.1.5, the following command will show that you’re running version 1.1.5 of the tools.

dotnet --version

Your feedback is important and appreciated. We’ve created dotnet/core #1082 for your questions and comments.

Azure AppServices

Deployment of the November 2017 Update on Azure AppServices is in process. Because AppServices is a high availability service, the deployment is carefully staged across regions over a period of time. Availability will begin in the West US 2 region today and gradually expand to all regions over the next few days.

November Update Highlights

Security Advisories

Microsoft is releasing security advisories for .NET Core and ASP.NET Core. Details can be found in corresponding announcements in the .NET Core and ASP.NET Core repos.

CVE-2017-8585 Malformed Certificate can cause Denial of Service

Microsoft is aware of a security vulnerability in .NET Core 1.0, 1.1 and 2.0 where a malformed certificate or other ASN.1 formatted data could lead to a denial of service via an infinite loop on Linux and macOS.

System administrators are advised to update their .NET Core runtimes to versions 1.0.8, 1.1.5 and 2.0.1. Developers are advised to update their .NET Core SDK to version 2.0.3 or 1.1.5.

CVE-2017-8700 CORS bypass can enable Information Disclosure

Microsoft is aware of a security vulnerability in ASP.NET Core 1.0 and 1.1 where Cross-Origin Resource Sharing (CORS) can be bypassed, leading to information disclosure.

CVE-2017-11879: Open Redirect can cause Elevation Of Privilege

Microsoft is aware of a security vulnerability in ASP.NET Core 2.0 where an Open Redirect exists, leading to Elevation Of Privilege.

CVE-2017-11770: Denial Of Service Vulnerability

Microsoft is aware of a security vulnerability in ASP.NET Core 1.0, 1.1 and 2.0 where the application is hosted through Windows Http.Sys where a malformed request can lead to a Denial Of Service.

Docker Images

The .NET Core Docker images have been updated for this release. Look for the 1.1.5 images.

Fixes in the November 2017 Update

1.0.8

CoreCLR

CoreFX

1.1.5

CoreCLR

CoreFX