.NET Framework June 2023 Security and Quality Rollup

Salini Agarwal

[06/20/2023] revised to fix the link for CVE-2023-32030

Today, we are releasing the June 2023 Security and Quality Rollup for .NET Framework.

Security

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.

• 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.

• 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.

• 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.

• 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.

• CVE-2023-29331

CVE-2023-32030 – .NET Framework Denial of Service Vulnerability

This security update addresses a vulnerability where X509Certificate2 file handling can lead to denial of service.

• CVE-2023-32030

Quality and Reliability

This release contains the following quality and reliability improvements.

WPF¹

• Addresses an issue where using IsReadOnly property of TextBox and RichTextBox in ControlTemplate.Triggers throws an exception.
• Addresses Null Reference Exception reloading XPS document after adjusting column width for Datagrid and Gridview controls.
• Addresses Null Reference Exception when ToolTip is visible property is overridden to be always be false.
• Addresses an issue to avoid ArgumentOutOfRangeException when ControlTemplate has two or more ItemsPresenter sharing a single ItemsCollection.
• Addresses ArgumentNullException that can arise in apps, or libraries, that directly set the IsOpen property on ToolTips or their Popups.

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.

¹ Windows Presentation Foundation (WPF)

Known Issues

Getting the Update

The Security and Quality Rollup is available via Windows Update, Windows Server Update Services, and Microsoft Update Catalog. The Security Only Update is available via Windows Server Update Services and Microsoft Update Catalog.

Note: Customers that rely on Windows Update and Windows Server Update Services will automatically receive the .NET Framework version-specific updates. Advanced system administrators can also take use of the below direct Microsoft Update Catalog download links to .NET Framework-specific updates. Before applying these updates, please ensure that you carefully review the .NET Framework version applicability, to ensure that you only install updates on systems where they apply.

The following table is for Windows 10, version 1507 and Windows Server 2016 versions and newer operating systems.

The following table is for earlier Windows and Windows Server versions.

Previous Monthly Rollups

The last few .NET Framework Monthly updates are listed below for your convenience:

• .NET Framework May 2023 Cumulative Update Preview
• .NET Framework April 2023 Cumulative Update Preview
• .NET Framework February 2023 Security and Quality Rollup Updates

Salini Agarwal

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