Description of the security update for SharePoint Enterprise Server 2016: September 12, 2023 (KB5002494)

Summary

This security update resolves a Microsoft Word remote code execution vulnerability and Microsoft SharePoint Server elevation of privilege vulnerability. To learn more about the vulnerabilities, see the following security advisories:

• Microsoft Common Vulnerabilities and Exposures CVE-2023-36762
• Microsoft Common Vulnerabilities and Exposures CVE-2023-36764

Notes:

• This is build 16.0.5413.1001 of the security update package.
• To apply this security update, you must have the release version of Microsoft SharePoint Enterprise Server 2016 installed on the computer.

This public update delivers Feature Pack 2 for SharePoint Server 2016. Feature Pack 2 contains the following feature:

• SharePoint Framework (SPFx)
  This public update also delivers all the features that were included in Feature Pack 1 for SharePoint Server 2016, including:
• Administrative Actions Logging
• MinRole enhancements
• SharePoint Custom Tiles
• Hybrid Taxonomy
• OneDrive API for SharePoint on-premises
• OneDrive for Business modern user experience (available to Software Assurance customers)
  The OneDrive for Business modern user experience requires an active Software Assurance contract at the time that the experience is enabled, either by installation of the public update or by manual enablement. If you don’t have an active Software Assurance contract at the time of enablement, you must turn off the OneDrive for Business modern user experience.For more information, see the following Microsoft Learn articles:
• New features included in the November 2016 Public Update for SharePoint Server 2016 (Feature Pack 1)
• New features included in the September 2017 Public Update for SharePoint Server 2016 (Feature Pack 2)

Improvements and fixes

This security update contains improvements in SharePoint Enterprise Server 2016:

• To improve the security of customer environments, Antimalware Scan Interface (AMSI) integration is now enabled by default for all new and existing web applications. For more information, see Configure AMSI integration with SharePoint Server.

• Improves AMSI integration by not blocking web requests if AMSI can’t successfully inspect the web request. A new health analyzer rule will notify SharePoint farm administrators if AMSI protection isn’t functioning as expected.
  This security update also contains an improvement in SharePoint Enterprise Server 2016. To get the improvement, you have to install KB 5002501 together with this update.

• Adds a new health analyzer rule to check whether AMSI integration is enabled, and, if it is, to confirm that AMSI protection is functioning as expected. If AMSI protection isn’t functioning as expected, the new health analyzer rule will notify SharePoint farm administrators through its health analyzer report, and provide recommended steps to fix the issue. For more information, see Antimalware Scan Interface (AMSI) protection may not be working (SharePoint Server).

Known issues in this update

New security enhancements in SharePoint Server might cause custom .aspx files not to be displayed under certain circumstances. Browsing to such a page generates a “92liq” event tag in SharePoint Unified Logging System (ULS) logs. For more information, see ASPX file cannot be displayed when you create a custom web part (KB5030804).

How to get and install the update

Method 1: Microsoft Update

This update is available from Microsoft Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to get security updates automatically, see Windows Update: FAQ.

Method 2: Microsoft Update Catalog

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Method 3: Microsoft Download Center

You can get the standalone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.

• Download security update 5002494 for the 64-bit version of SharePoint Enterprise Server 2016

More information

Security update deployment information

For deployment information about this update, see Deployments - Security Update Guide.

Security update replacement information

This security update replaces previously released security update 5002453.

File hash information

File name	SHA256 hash
sts2016-kb5002494-fullfile-x64-glb.exe	E773C65A7D0F2736786118DDBEBAC03FA4D7DACAFD9167F42E5F3F7BBE1B575E

File information

Download the list of files that are included in security update 5002494.

Information about protection and security

Protect yourself online: Windows Security supportLearn how we guard against cyber threats: Microsoft Security