This security update includes improvements and fixes that were a part of update KB4025340 (released July 18, 2017) and resolves the following issues:
- Security updates to Microsoft JET Database Engine, Common Log File System Driver, Microsoft Windows Search Component, Volume Manager Driver, Internet Explorer, Windows Server, and Windows kernel-mode drivers.
For more information about the resolved security vulnerabilities, see the Security Update Guide.
|Due to a defect in WLDAP32.DLL, applications that perform LDAP referral chasing can consume excessive or all of the available TCP dynamic ports after installing KB 4025337 and KB4025341. Applications and roles known to make these referrals may include Outlook.exe, DFSR, and others.
If restarting applications that perform LDAP referral chasing returns normal functionality on machines that installed KB 4025337 and KB4025341, you may be experiencing this issue.
|To work around the problem, restart services or applications that perform LDAP referral chasing to free TCP dynamic ports. A reboot will also free ports. For example, restarting Outlook will free ports used by that application.
To work around the problem for cluster computers hosting the DFSR service, place the virtual cluster object under the Computers container to avoid reaching the referral chasing search, which leads to the dynamic port leak.
Microsoft is working on a resolution and will provide an update in an upcoming release.
This 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.
For a list of the files that are provided in this update, download the file information for update 4034664.