Description of the security update for SharePoint Server 2019: August 11, 2020

Applies to: SharePoint Server 2019

Summary


This security update resolves vulnerabilities in Microsoft Office that could allow remote code execution if a user opens a specially crafted Office file. To learn more about these vulnerabilities, see the following security advisories:

Note To apply this security update, you must have the release version of Microsoft SharePoint Server 2019 installed on the computer.

Improvements and fixes


This security update contains the following improvements and fixes for SharePoint Server 2019:
  • The accessibility experience of the SharePoint App Launcher has been improved for better integration with assistive technologies.
  • Friendly URLs aren't crawled through incremental or continuous crawls.
  • Corrects the wrong time format of yyyy-MM-ddTHH:mm:ssZ when a calculated column value is displayed in a list view that is configured by having the Expanded option for its Group By setting.
  • Fixes an issue in which manager information is missing when you use an external identity manager.
  • Fixes an issue in which the role of Site-Brand-Bar is incorrect.
  • The OneDrive sync app supports push notification and polling as two different mechanisms to discover changes in the documents that it syncs. Push notification is preferred because it allows SharePoint to notify the OneDrive sync app of changes in real time. This eliminates the computational cost of scanning for changes at regular intervals.

    Push notification requires both the OneDrive sync app and the SharePoint farm to have network connectivity to Windows Push Notification Services (WNS) in the cloud. If the OneDrive sync app cannot establish a push notification relationship with the SharePoint farm and WNS, it uses polling instead. Polling scans for changes in documents at regular intervals.

    SharePoint farm administrators can now control how often the OneDrive sync app scans for changes in a web application when they use the polling mechanism. Use the following PowerShell commands on the SharePoint server to modify the polling interval:
    $webapp = Get-SPWebApplication <web application URL>$syncpolicy = $webapp.SyncPolicySettings$syncpolicy.BackgroundPollShortIntervalSecondsStart = <minimum polling interval in seconds>$syncpolicy.BackgroundPollShortIntervalSecondsEnd = <maximum polling interval in seconds>$syncpolicy.Update()
    Note Test modifications to the polling interval to make sure that your production environment has sufficient capacity to handle the changes in the computational load. Microsoft recommends that you use push notification instead of polling, if it is possible.
This security update also fixes the following issues. To fix these issues completely, you have to install KB 4484471 together with this update:
  • The view name does not change when you use Group By.
  • Adding a document link does not return you to the library.
  • A multichoice person column is not displayed correctly in modern view.
  • The Aria-labelledby attribute value is invalid.
  • The home page title is not descriptive enough.
  • A banner landmark must not be contained inside another landmark.
  • The title of Frame is missing in Create Site.
  • If a user navigates to a custom list and opens the Links list in JAWS by using the Alt+F7 keyboard shortcut to see all links on the page, each item in the custom list shows the Open Menu link to open the Edit Control Block (ECB) menu. In this situation, it is not possible to determine which item each link belongs to.
This security update contains fixes for the following nonsecurity issues in Project Server 2019:
  • Sites that have many timesheets or timesheet views may experience a time-out when you create or modify timesheet views. This may make it impossible to create timesheets or open existing timesheets.
  • When you follow a procedure to link a project task to an Issue or Risk within the Asset Picker table, items such as Issues, Documents, Tasks, and Deliverables are missing.

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: August 11, 2020.

Security update replacement information

This security update replaces previously released security update 4484453.

File hash information

File name SHA1 hash SHA256 hash
sts2019-kb4484472-fullfile-x64-glb.exe 0A01CAC6E3AB13CAA59FF45B113DA9F42CBF10A5 77D9113B321FD5396B72A0A9CFBE994F47DD56A6A4D6326348E3BD3E3D66BB3B


File information

The English (United States) version of this software update installs files that have the attributes that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.

Information about protection and security


Protect yourself online: Windows Security support

Learn how we guard against cyber threats: Microsoft Security