Remote Code Execution (RCE) Affecting microsoft.aspnetcore.app package, versions [,2.1.20) [3.0.0,3.1.6)
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- Snyk ID SNYK-DOTNET-MICROSOFTASPNETCOREAPP-584430
- published 15 Jul 2020
- disclosed 14 Jul 2020
- credit Oleksandr Mirosh from Micro Focus Fortify
How to fix?
Microsoft.AspNetCore.App to version 2.1.20, 3.1.6 or higher.
Microsoft.AspNetCore.App is a package that provides a default set of APIs for building an ASP.NET Core application.
Affected versions of this package are vulnerable to Remote Code Execution (RCE). The software fails to check the source markup of XML file input. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the process responsible for deserialization of the XML content. To exploit this vulnerability, an attacker could upload a specially crafted document to a server utilizing an affected product to process content.