Description of the security update for Office Web Apps Server 2013: August 14, 2018

Summary

This security update resolves vulnerabilities in Microsoft Office that could allow information disclosure if a user opens a specially crafted Office file. To learn more about these vulnerabilities, see Microsoft Common Vulnerabilities and Exposures CVE-2018-8378.

Note To apply this security update, you must have the release version of Service Pack 1 for Microsoft Office Web Apps Server 2013 installed on the computer.

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 stand-alone package for this update, go to the Microsoft Update Catalog website.

Method 3: Microsoft Download Center

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

• Download security update KB 4022238 for the 64-bit version of Office Web Apps Server 2013

More Information

Security update deployment information

For deployment information about this update, see security update deployment information: August 14, 2018.

Security update replacement information

This security update replaces previously released security update KB 4022183.

File hash information

File name	SHA1 hash	SHA256 hash
wacserver2013-kb4022238-fullfile-x64-glb.exe	8F8C523218A95799BD8349EE311F615B060415DA	2E158F7F2672C9CD5B7B00A50CB24F533438BB6F46348F441A9156E1EB288033

File information

For the list of files that are included in the cumulative update (KB 4022238), download the file information.

How to get help and support for this security update

Help for installing updates: Windows Update: FAQSecurity solutions for IT professionals: TechNet Security Support and TroubleshootingHelp for protecting your Windows-based computer from viruses and malware: Microsoft SecureLocal support according to your country: International Support