CVE-2022-23267: .NET and Visual Studio Denial of Service Vulnerability
.NET and Visual Studio Denial of Service Vulnerability
Other sources
Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 6.0, .NET 5.0 and .NET Core 3.1. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.
A vulnerability exists in .NET 6.0, .NET 5.0 and .NET Core 3.1 where a malicious client can cause a Denial of Service via excess memory allocations through HttpClient.
Affected software
Any .NET 6.0 application running on .NET 6.0.4 or earlier. Any .NET 5.0 application running .NET 5.0.16 or earlier. Any .NET Core 3.1 applicaiton running on .NET Core 3.1.24 or earlier.
Patches If you're using .NET Core 6.0, you should download and install Runtime 6.0.5 or SDK 6.0.105 (for Visual Studio 2022 v17.0) or SDK 6.0.203 (for Visual Studio 2022 v17.1) from https://dotnet.microsoft.com/download/dotnet-core/6.0.
If you're using .NET 5.0, you should download and install Runtime 5.0.17 or SDK 5.0.214 (for Visual Studio 2019 v16.9) or SDK 5.0.408 (for Visual Studio 2011 v16.11) from https://dotnet.microsoft.com/download/dotnet-core/5.0.
If you're using .NET Core 3.1, you should download and install Runtime 3.1.25 or SDK 3.1.419 (for Visual Studio 2019 v16.9 or Visual Studio 2011 16.11 or Visual Studio 2022 17.0 or Visual Studio 2022 17.1 ) from https://dotnet.microsoft.com/download/dotnet-core/3.1.
.NET 6.0, .NET 5.0 and .NET Core 3.1 updates are also available from Microsoft Update. To access this either type "Check for updates" in your Windows search, or open Settings, choose Update & Security and then click Check for Updates.
Other Details Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/221 An Issue for this can be found at https://github.com/dotnet/runtime/issues/69149 MSRC details for this can be found at https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2022-23267
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2022-23267.
What is the severity of CVE-2022-23267?
The severity of CVE-2022-23267 is high with a severity value of 7.5.
Which software is affected by CVE-2022-23267?
The software affected by CVE-2022-23267 includes Microsoft .NET 5.0, Microsoft .NET 6.0.0, Microsoft .NET Core 3.1, Microsoft Powershell versions 7.0 to 7.0.11 and 7.2 to 7.2.4, Microsoft Visual Studio 2019 versions 16.0 to 16.9.21 and 16.10 to 16.11.14, and Microsoft Visual Studio 2022 versions 17.0 and 17.1.
What is the description of CVE-2022-23267?
CVE-2022-23267 is a Denial of Service vulnerability in .NET and Visual Studio.
How can I fix CVE-2022-23267?
There is currently no fix available for CVE-2022-23267. It is recommended to follow the security advisories from the software vendors for updates or patches.