.NET Core Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-24112.
Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 5.0, .NET Core 3.1, and .NET Core 2.1. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.
A remote code execution vulnerability exists in .NET 5 and .NET Core due to how text encoding is performed.
Discussion for this issue can be found at dotnet/runtime#49377
Microsoft has not identified any mitigating factors for this vulnerability.
The vulnerable package is System.Text.Encodings.Web
. Upgrading your package and redeploying your app should be sufficient to address this vulnerability.
Vulnerable package versions:
Any .NET 5, .NET Core, or .NET Framework based application that uses the System.Text.Encodings.Web package with a vulnerable version listed below.
Package Name | Vulnerable Versions | Secure Versions -|-|- System.Text.Encodings.Web | 4.0.0 - 4.5.0 | 4.5.1 System.Text.Encodings.Web | 4.6.0-4.7.1 | 4.7.2 System.Text.Encodings.Web | 5.0.0 | 5.0.1
Please validate that each of the .NET versions you are using is in support. Security updates are only provided for supported .NET versions.
{ "nvd_published_at": "2021-02-25T23:15:00Z", "cwe_ids": [], "severity": "CRITICAL", "github_reviewed": true, "github_reviewed_at": "2021-04-21T19:37:39Z" }