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MicrosoftKB4493471

HistoryApr 09, 2019 - 7:00 a.m.

April 9, 2019—KB4493471 (Monthly Rollup)

2019-04-0907:00:00

Microsoft

support.microsoft.com

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

7.5 High

AI Score

Confidence

High

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.125 Low

EPSS

Percentile

95.4%

JSON

April 9, 2019—KB4493471 (Monthly Rollup)

Customers who have applied KB 4489887 or later Monthly Rollup Packages to Microsoft Server 2008 SP2 may notice a change to the operating system version string. The “build number” component of the version string increases by 1, and the revision number decreases by approximately 4000 numbers. To find out more about this change please refer to the following article.

Improvements and fixes

This security update includes improvements and fixes that were a part of update KB4489887 (released March 19, 2019) and addresses the following issues:

Addresses an issue that causes the error “0x3B_c0000005_win32k!vSetPointer” when the kernel mode driver, win32k.sys, accesses an invalid memory location.
Addresses an issue in which netdom.exe fails to run, and the error, “The command failed to complete successfully” appears.
Addresses an issue that may cause compound document (OLE) server applications to display embedded objects incorrectly if you use the PatBltAPI to place embedded objects into the Windows Metafile (WMF).
Security updates to Windows Storage and Filesystems, Windows Server, Microsoft Graphics Component, Windows Input and Composition, Windows Datacenter Networking, Windows Kernel, Windows MSXML, and the Microsoft JET Database Engine.
For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.

Known issues in this update

Symptom	Workaround
After installing this update, some customers report that authentication fails for services that require unconstrained delegation after the Kerberos ticket expires (the default is 10 hours). For example, the SQL server service fails.	This issue is resolved in KB4499149.
Microsoft and Sophos have identified an issue on devices with Sophos Endpoint Protection installed and managed by either Sophos Central or Sophos Enterprise Console (SEC) that may cause the system to become unresponsive upon restart after installing this update.	This issue has been resolved. Microsoft has removed the temporary block for all affected Windows updates.Guidance for Sophos Endpoint and Sophos Enterprise Console customers can be found in the Sophos support article.
Microsoft and Avira have identified an issue on devices with Avira antivirus software installed that may cause the system to become unresponsive upon restart after installing this update.	This issue has been resolved. Microsoft has removed the temporary block for all affected Windows updates. Avira has released an automatic update to address this issue. Guidance for Avira customers can be found in the Avira support article.

How to get this update

Before installing this updateMicrosoft strongly recommends you install the latest servicing stack update (SSU) for your operating system before installing the latest Rollup. SSUs improve the reliability of the update process to mitigate potential issues while installing the Rollup and applying Microsoft security fixes. If you are using Windows Update, the latest SSU (KB4493730) will be offered to you automatically. To get the standalone package for the latest SSU, go to the Microsoft Update Catalog.Install this updateThis update will be downloaded and installed automatically from Windows Update. To get the standalone package for this update, go to the Microsoft Update Catalog website.File informationFor a list of the files that are provided in this update, download the file information for update 4493471.