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GHSA-ghhp-997w-qr28
No affected components available
.NET Core Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-24112.
Executive summary
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
Discussion for this issue can be found at dotnet/runtime#49377
Mitigation factors
Microsoft has not identified any mitigating factors for this vulnerability.
Affected software
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.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.
Active exploitation in the wild has been confirmed. Immediate patching or mitigation is required.
The exploit probability is moderate. The vulnerability is likely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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