News

Microsoft Patches .NET Core Security Vulnerability

Microsoft published a security advisory yesterday to warn of a denial-of-service vulnerability in .NET Core and .NET native version 2.0 and provide guidance on how to address it with a new update.

The easiest way for .NET Core developers to dodge the vulnerability is to just use the .NET Core 2.1 Release Candidate 1, just shipped this week during the company's Build developer conference.

"Microsoft is aware of a denial-of-service vulnerability that exists when .NET Framework and .NET Core improperly process XML documents," the company said in its advisory yesterday that announced the release of the .NET Core May 2018 Update to provide a fix. "An attacker who successfully exploited this vulnerability could cause a denial of service against a .NET Framework, .NET Core, or .NET native application.

The update addresses the vulnerability by correcting how .NET Framework, .NET Core, and .NET native applications handle XML document processing."

Note that applications that don't process signed XML are not affected, nor are applications that target .NET Core 1.x or .NET Framework 1.x.

Otherwise, developers working on ASP.NET Core applications are advised to adopt ASP.NET Core 2.0.8.

Developers can get the May update from the .NET Core download page or via NuGet with the Microsoft.AspNetCore.All package.

Otherwise, as mentioned, .NET Core developers can just move on to the new .NET Core 2.1 RC. Microsoft said ".NET Core 2.1 RC 1 includes these fixes. No update is required for .NET Core 2.1 RC 1."

Docker images have also been updated for the May update, Microsoft said.

For more details, consult the CVE-2018-0765: .NET Core Denial Of Service Vulnerability site.

About the Author

David Ramel is an editor and writer for Converge360.

comments powered by Disqus

Featured

  • Death of the Dev Machine?

    Here's a takeaway from this week's Ignite 2020 event: An advanced Azure cloud portends the death of the traditional, high-powered dev machine packed with computing, memory and storage components.

  • COVID-19 Is Ignite 2020's Elephant in the Room: 'Frankly, It Sucks'

    As in all things of our new reality, there was no escaping the drastic changes in routine caused by the COVID-19 pandemic during Microsoft's big Ignite 2020 developer/IT pro conference, this week shifted to an online-only event after drawing tens of thousands of in-person attendees in years past.

  • Visual Studio 2019 v16.8 Preview Update Adds Codespaces

    To coincide with the Microsoft Ignite 2020 IT pro/developer event, the Visual Studio dev team shipped a new update, Visual Studio 2019 v16.8 Preview 3.1, with the main attraction being support for cloud-hosted Codespaces, now in a limited beta.

  • Speed Lines Graphic

    New for Blazor: Azure Static Web Apps Support

    With Blazor taking the .NET web development world by storm, one of the first announcements during Microsoft's Ignite 2020 developer/IT event was its new support in Azure Static Web Apps.

  • Entity Framework Core 5 RC1 Is Feature Complete, Ready for Production

    The first release candidate for Entity Framework 5 -- Microsoft's object-database mapper for .NET -- has shipped with a go live license, ready for production.

Upcoming Events