GHSA-2c7v-qcjp-4mg2 .NET Remote Code Execution Vulnerability
Microsoft Security Advisory CVE-2022-41089: .NET Remote Code Execution Vulnerability<a name="executive-summary"></a>Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET Core 3.1, .NET 6.0., and .NET 7.0. 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 Core 3.1, .NET 6.0, and .NET 7.0, where a malicious actor could cause a user to run arbitrary code as a result of parsing maliciously crafted xps files.AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/242<a name="mitigation-factors"></a>Mitigation factorsMicrosoft has not identified any mitigating factors for this vulnerability.<a name="affected-software"></a>Affected softwareAny .NET 7.0 WinForms or WPF application running on .NET 7.0.0 or earlier.Any .NET 6.0 WinForms or WPF application running on .NET 6.0.11 or earlier.Any .NET Core 3.1 WinForms or WPF application running on .NET 3.1.31 or earlier.If the application does not utilize WinForms or WPF, it is not affected by this vulnerability.Applications targeting Mac, Linux, Android, iOS, and other non-Windows platforms are not affected by this vulnerability.If your application uses the following package versions, ensure you update to the latest version of .NET.<a name=".NET Core 3.1"></a>.NET Core 3.1Package name | Affected version | Patched version
------------ | ---------------- | -------------------------
[Microsoft.WindowsDesktop.App.Runtime.win-x64](https://www.nuget.org/packages/Microsoft.WindowsDesktop.App.Runtime.win-x64)|>= 3.1.0, <= 3.1.31|3.1.32
[Microsoft.WindowsDesktop.App.Runtime.win-x86](https://www.nuget.org/packages/Microsoft.WindowsDesktop.App.Runtime.win-x86)|>= 3.1.0, <= 3.1.31|3.1.32<a name=".NET 6"></a>.NET 6Package name | Affected version | Patched version
------------ | ---------------- | -------------------------
[Microsoft.WindowsDesktop.App.Runtime.win-arm64](https://www.nuget.org/packages/Microsoft.WindowsDesktop.App.Runtime.win-arm64)|>= 6.0.0, <= 6.0.11|6.0.12
[Microsoft.WindowsDesktop.App.Runtime.win-x64](https://www.nuget.org/packages/Microsoft.WindowsDesktop.App.Runtime.win-x64)|>= 6.0.0, <= 6.0.11|6.0.12
[Microsoft.WindowsDesktop.App.Runtime.win-x86](https://www.nuget.org/packages/Microsoft.WindowsDesktop.App.Runtime.win-x86)|>= 6.0.0, <= 6.0.11|6.0.12<a name=".NET 7"></a>.NET 7Package name | Affected version | Patched version
------------ | ---------------- | -------------------------
[Microsoft.WindowsDesktop.App.Runtime.win-arm64](https://www.nuget.org/packages/Microsoft.WindowsDesktop.App.Runtime.win-arm64)|>= 7.0.0, <= 7.0.0|7.0.1
[Microsoft.WindowsDesktop.App.Runtime.win-x64](https://www.nuget.org/packages/Microsoft.WindowsDesktop.App.Runtime.win-x64)|>= 7.0.0, <= 7.0.0|7.0.1
[Microsoft.WindowsDesktop.App.Runtime.win-x86](https://www.nuget.org/packages/Microsoft.WindowsDesktop.App.Runtime.win-x86)|>= 7.0.0, <= 7.0.0|7.0.1Advisory FAQ<a name="how-affected"></a>How do I know if I am affected?If you have a runtime or SDK with a version listed, or an affected package listed in [affected software](#affected-software), you're exposed to the vulnerability.<a name="how-fix"></a>How do I fix the issue?To fix the issue please install the latest version of .NET 7.0, .NET 6.0 or .NET Core 3.1. If you have installed one or more .NET SDKs through Visual Studio, Visual Studio will prompt you to update Visual Studio, which will also update your .NET  SDKs.If you have .NET Core 3.1 or greater installed, you can list the versions you have installed by running the `dotnet --info` command. You will see output like the following;If you are using one of the affected packages, please update to the patched version listed above.If you're using .NET 7.0, you should download and install Runtime 7.0.1 or SDK 7.0.101 (for Visual Studio 2022 v17.4) from https://dotnet.microsoft.com/download/dotnet-core/7.0.If you're using .NET 6.0, you should download and install Runtime 6.0.12 or SDK 6.0.112 (for Visual Studio 2022 v17.1) from https://dotnet.microsoft.com/download/dotnet-core/6.0.If you're using .NET Core 3.1, you should download and install Runtime 3.1.32 (for Visual Studio 2019 v16.9) from https://dotnet.microsoft.com/download/dotnet-core/3.1..NET 7.0, .NET 6.0 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.Once you have installed the updated runtime or SDK, restart your apps for the update to take effect.Additionally, if you've deployed [self-contained applications](https://docs.microsoft.com/dotnet/core/deploying/#self-contained-deployments-scd) targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.Other InformationAcknowledgements[Eleftherios Panos](https://twitter.com/lefterispan) with [Nettitude](https://www.nettitude.com/)
[Nick Landers](https://twitter.com/monoxgas) with NetSPIReporting Security IssuesIf you have found a potential security issue in .NET 7.0, .NET 6.0 or .NET Core 3.1, please email details to secure@microsoft.com. Reports may qualify for the Microsoft .NET Core & .NET 5 Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at <https://aka.ms/corebounty>.SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime and https://github.com/dotnet/wpf/. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue.DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.External Links[CVE-2022-41089]( https://www.cve.org/CVERecord?id=CVE-2022-41089)
CVSS v3.1 score: 8.8