June 13, 2023 - KB5027118 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 21H2
The June 13, 2023 update for Windows 11, version 21H2 includes cumulative security and reliability improvements in .NET Framework 3.5 and 4.8.1. We recommend that you apply this update as part of your regular maintenance routines. Before you install this update, see the Prerequisites and Restart requirement sections.
Summary
Security Improvements
CVE-2023-24897 - .NET Framework Remote Code Execution Vulnerability
This security update addresses a vulnerability in the MSDIA SDK where corrupted PDBs can cause heap overflow, leading to a crash or remove code execution. For more information see CVE-2023-24897.
CVE-2023-29326 - .NET Framework Remote Code Execution Vulnerability
This security update addresses a vulnerability in WPF where the BAML offers other ways to instantiate types that leads to an elevation of privilege. For more information see CVE-2023-29326.
CVE-2023-24895 - .NET Framework Remote Code Execution Vulnerability
This security update addresses a vulnerability in the WPF XAML parser where an unsandboxed parser can lead to remote code execution. For more information see CVE-2023-24895.
CVE-2023-24936 - .NET Framework Elevation of Privilege Vulnerability
This security update addresses a vulnerability in bypass restrictions when deserializing a DataSet or DataTable from XML, leading to an elevation of privilege. For more information see CVE-2023-24936.
CVE-2023-29331 - .NET Framework Denial of Service Vulnerability
This security update addresses a vulnerability where the AIA fetching process for client certificates can lead to denial of service. For more information see CVE 2023-29331.
CVE-2023-29330 - .NET Framework Denial of Service Vulnerability
This security update addresses a vulnerability where X509Certificate2 file handling can lead to denial of service. For more information see CVE-2023-32030.
Quality and Reliability Improvements
1Windows Presentation Foundation (WPF)
WPF1 - Addresses ArgumentNullException that can arise in apps, or libraries, that directly set the IsOpen property on ToolTips or their Popups.
- Addresses an issue to avoid ArgumentOutOfRangeException when ControlTemplate has two or more ItemsPresenter sharing a single ItemsCollection.
- Addresses Null Reference Exception when ToolTip is visible property is overridden to be always be false.
- Addresses Null Reference Exception reloading XPS document after adjusting column width for Datagrid and Gridview controls.
- Addresses an issue where using IsReadOnly property of TextBox and RichTextBox in ControlTemplate.Triggers throws an exception.
SQL Connectivity - Addresses an issue where SQL connection created is not terminated by the library when this error is thrown or is leaked in the client application.
Additional information about this update
The following articles contain additional information about this update as it relates to individual product versions.
- 5027539 Description of the Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 11, version 21H2 (KB5027539)
Known issues in this update
Symptom After installing this update, WPF apps may have a change in behavior. For more information about this issue, see KB5025823 Workaround To mitigate this issue, see KB5025823.
How to get this update
Install this update
Release Channel Available Next Step Windows Update and Microsoft Update Yes None. This update will be downloaded and installed automatically from Windows Update. Windows Update for Business Yes None. This update will be downloaded and installed automatically from Windows Update. Microsoft Update Catalog Yes To get the standalone package for this update, go to the Microsoft Update Catalog website. Windows Server Update Services (WSUS) Yes This individual .NET Framework product update will be installed, as applicable, by applying the operating system update. For more information about operating system updates see additional information about this update section.
File information
For a list of the files that are provided in this update, download the file information for cumulative update.
Prerequisites
To apply this update, you must have .NET Framework 3.5 or 4.8.1 installed.
Restart requirement
You must restart the computer after you apply this update if any affected files are being used. We recommend that you exit all .NET Framework-based applications before you apply this update.
Source:
.NET Framework June 2023 Security and Quality Rollup - .NET Blog
June 2023 Security and Quality Rollup Updates for .NET Framework
devblogs.microsoft.com
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