Update

Fixes LSASS Token Leaks

Bug fixes

This security update includes improvements that were a part of update KB5015879 (released July 19, 2022) and also addresses the following issues:

  • Addresses an issue that might cause the Local Security Authority Server Service (LSASS) to leak tokens. This issue affects devices that have installed Windows updates dated June 14, 2022 or later. This issue occurs when the device performs a specific of service for user (S4U) in a non-Trusted Computing Base (TCB) Windows service that runs as Network Service.

If you installed earlier updates, only the new updates contained in this package will be downloaded and installed on your device.

For more information about security vulnerabilities, please refer to the Security Update Guide and the August 2022 Security Updates

Windows 10 servicing stack update - 20348.850

This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) ensure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates.

Open issues

*Symptom: After installing this update, IE mode tabs in Microsoft Edge might stop responding when a site displays a modal dialog box. A modal dialog box is a or dialog box that requires the user to respond before continuing or interacting with other portions of the webpage or app.

Developer Note: Sites affected by this issue callwindow.focus.

Status:This issue is addressed in KB5016693.

*Symptom: Starting at 12:00 A.M. Saturday, September 10, 2022, the official time in Chile will advance 60 minutes in accordance with the August 9, 2022 official announcement by the Chilean government about a daylight saving time (DST) time zone change. This moves the DST change which was previously September 4 to September 10.

Symptoms if the workaround is not used on devices between September 4, 2022 and September 11, 2022:

  • Time shown in Windows and apps will not be correct.
  • ​ Apps and cloud services which use date and time for integral functions, such as Microsoft Teams and Microsoft Outlook, notifications and scheduling of meetings might be 60 minutes off.
  • Automation that uses date and time, such as Scheduled tasks, might not run at the expected time.
  • Timestamp on transactions, files, and logs will be 60 minutes off.
  • ​ Operations that rely on time-dependent protocols such as Kerberos might cause authentication failures when attempting to logon or access resources.
  • Windows devices and apps outside of Chile might also be affected if they are connecting to servers or devices in Chile or if they are scheduling or attending meetings taking place in Chile from another location or time zone. Windows devices outside of Chile should not use the workaround, as it would change their local time on the device.

Workaround: To mitigate this issue, please see Possible issues caused by new Daylight Savings Time in Chile.

We are working on a resolution and will provide an update in an upcoming release.

Note We plan to release an update to support this change; however, there might be insufficient time to properly build, test, and release such an update before the change goes into effect. Please use the workaround above.

Version: OS Build 20348.887 Link
Receive Important Update Messages Stay tuned for upcoming Microsoft Windows Server 23H2 updates

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