The vulnerability stems from insecure XML deserialization in DataSet/DataTable when the default allow-list is extended. While specific file paths aren't disclosed in advisories, the core vulnerability manifests in the ReadXml methods that process XML input. These methods become dangerous when combined with a modified type allow-list, as documented in Microsoft's security guidance. Historical patterns (e.g., similar .NET deserialization vulnerabilities) and the advisory's focus on DataSet/DataTable XML parsing strongly implicate these methods.
| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| Microsoft.NetCore.App.Runtime.linux-arm | nuget | >= 7.0.0, <= 7.0.5 | 7.0.7 |
| Microsoft.NetCore.App.Runtime.linux-arm64 | nuget | >= 7.0.0, <= 7.0.5 | 7.0.7 |
Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- Microsoft.NetCore.App.Runtime.linux-arm | >= 6.0.0, < 6.0.16 | 6.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 6.0.0, < 6.0.16 | 6.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 6.0.1, < 6.0.16 | 6.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 6.0.0, < 6.0.16 | 6.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 6.0.0, < 6.0.16 | 6.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 6.0.0, < 6.0.16 | 6.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 6.0.0, < 6.0.16 | 6.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 6.0.0, < 6.0.16 | 6.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 6.0.0, < 6.0.16 | 6.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 6.0.0, < 6.0.16 | 6.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 6.0.0, < 6.0.16 | 6.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 6.0.0, < 6.0.16 | 6.0.18
If you have a runtime or SDK with a version listed, or an affected package listed in affected software, you're exposed to the vulnerability.
dotnet --info command. You will see output like the following;.NET Core SDK (reflecting any global.json):
Version: 6.0.300
Commit: 8473146e7d
Runtime Environment:
OS Name: Windows
OS Version: 10.0.18363
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\6.0.300\
Host (useful for support):
Version: 6.0.5
Commit: 8473146e7d
.NET Core SDKs installed:
6.0.300 [C:\Program Files\dotnet\sdk]
.NET Core runtimes installed:
Microsoft.AspNetCore.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
To install additional .NET Core runtimes or SDKs:
https://aka.ms/dotnet-download
.NET 6.0 and and .NET 7.0 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 targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.
If you have found a potential security issue in .NET 6.0 or .NET 7.0, 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.
You 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/aspnet/. 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.
The 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.
V1.0 (June 13, 2023): Advisory published.
Version 1.0
Last Updated 2023-06-13
| Microsoft.NetCore.App.Runtime.linux-musl-arm |
| nuget |
| >= 7.0.0, <= 7.0.5 |
| 7.0.7 |
| Microsoft.NetCore.App.Runtime.linux-musl-arm64 | nuget | >= 7.0.0, <= 7.0.5 | 7.0.7 |
| Microsoft.NetCore.App.Runtime.linux-musl-x64 | nuget | >= 7.0.0, <= 7.0.5 | 7.0.7 |
| Microsoft.NetCore.App.Runtime.linux-x64 | nuget | >= 7.0.0, <= 7.0.5 | 7.0.7 |
| Microsoft.NetCore.App.Runtime.osx-arm64 | nuget | >= 7.0.0, <= 7.0.5 | 7.0.7 |
| Microsoft.NetCore.App.Runtime.osx-x64 | nuget | >= 7.0.0, <= 7.0.5 | 7.0.7 |
| Microsoft.NetCore.App.Runtime.win-arm | nuget | >= 7.0.0, <= 7.0.5 | 7.0.7 |
| Microsoft.NetCore.App.Runtime.win-arm64 | nuget | >= 7.0.0, <= 7.0.5 | 7.0.7 |
| Microsoft.NetCore.App.Runtime.win-x64 | nuget | >= 7.0.0, <= 7.0.5 | 7.0.7 |
| Microsoft.NetCore.App.Runtime.win-x86 | nuget | >= 7.0.0, <= 7.0.5 | 7.0.7 |
| Microsoft.NetCore.App.Runtime.linux-arm | nuget | >= 6.0.0, <= 6.0.16 | 6.0.18 |
| Microsoft.NetCore.App.Runtime.linux-arm64 | nuget | >= 6.0.0, <= 6.0.16 | 6.0.18 |
| Microsoft.NetCore.App.Runtime.linux-musl-arm | nuget | >= 6.0.0, <= 6.0.16 | 6.0.18 |
| Microsoft.NetCore.App.Runtime.linux-musl-arm64 | nuget | >= 6.0.0, <= 6.0.16 | 6.0.18 |
| Microsoft.NetCore.App.Runtime.linux-musl-x64 | nuget | >= 6.0.0, <= 6.0.16 | 6.0.18 |
| Microsoft.NetCore.App.Runtime.linux-x64 | nuget | >= 6.0.0, <= 6.0.16 | 6.0.18 |
| Microsoft.NetCore.App.Runtime.osx-arm64 | nuget | >= 6.0.0, <= 6.0.16 | 6.0.18 |
| Microsoft.NetCore.App.Runtime.osx-x64 | nuget | >= 6.0.0, <= 6.0.16 | 6.0.18 |
| Microsoft.NetCore.App.Runtime.win-arm | nuget | >= 6.0.0, <= 6.0.16 | 6.0.18 |
| Microsoft.NetCore.App.Runtime.win-arm64 | nuget | >= 6.0.0, <= 6.0.16 | 6.0.18 |
| Microsoft.NetCore.App.Runtime.win-x64 | nuget | >= 6.0.0, <= 6.0.16 | 6.0.18 |
| Microsoft.NetCore.App.Runtime.win-x86 | nuget | >= 6.0.0, <= 6.0.16 | 6.0.18 |
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