Summary
This security update resolves a Microsoft SharePoint Server information disclosure vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2021-34519.
Note: 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:
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SharePoint Framework (SPFx)
This public update also delivers all the features that were included in Feature Pack 1 for SharePoint Server 2016, including the following:
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Administrative Actions Logging
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MinRole enhancements
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SharePoint Custom Tiles
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Hybrid Taxonomy
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OneDrive API for SharePoint on-premises
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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 Docs articles:
Improvements and fixes
This article contains the following fix and improvement. To enable this update and fix the issue completely, you have to install KB 5001976 together with this update.
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Adds the ability to change the ASP.NET view state decryption and validation keys of a SharePoint Server web application. The Set-SPMachineKey PowerShell cmdlet configures and deploys new decryption and validation keys to the servers in the farm. The Update-SPMachineKey PowerShell cmdlet deploys decryption and validation keys to the servers in the farm.
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Fixes an issue that affects the bypass list functionality in the search crawler proxy settings by adding Windows-style wildcard support to the bypass list.
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.
More information
Security update deployment information
For deployment information about this update, see Security update deployment information: July 13, 2021 (KB5004480).
Security update replacement information
This security update replaces previously released security update 5001922.
File hash information
|
File name |
SHA256 hash |
|---|---|
|
wssloc2016-kb5001981-fullfile-x64-glb.exe |
29AA31FBB3676B072ACDE83F1C53208EF5AF8F8C0F9194EE76721A7B921AFDB2 |
File information
Download the list of files that are included in security update 5001981.
Information about protection and security
Protect yourself online: Windows Security support
Learn how we guard against cyber threats: Microsoft Security
Change history
The following table summarizes some of the most important changes to this topic.
|
Date |
Description |
|---|---|
|
July 22, 2021 |
Update the issue description about the bypass list functionality in the Improvements and fixes section. |
