Critical Patches Issued for Microsoft Products, May 8, 2018

ITS Advisory Number: 
2018-054
Date(s) Issued: 
Wednesday, May 9, 2018
Subject: 
Critical Patches Issued for Microsoft Products, May 8, 2018
Overview: 

Multiple vulnerabilities have been discovered in Microsoft products, the most severe of which could allow for code execution. Successful exploitation of the most severe of these vulnerabilities could result in an attacker gaining the same privileges as the logged on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.

Systems Affected: 
  • Microsoft Windows 7, 8, RT 8.1, and 10
  • Microsoft Windows Server 2008, 2008 R2, 2012, 2012 R2, 2016
  • Microsoft Windows Server Core Installation 2008, 2008 R2, 2012, 2012 R2, 2016, versions 1709, 1803
  • Microsoft Office 2010, 2013, 2013 RT, 2016, 2016 Click-to-Run, 2016 for Mac
  • Microsoft Office Compatibility Pack
  • Microsoft Office Web Apps 2010
  • Microsoft Office Web Apps Server 2010, 2013
  • Microsoft Word 2013, 2013 RT, 2016
  • Microsoft Excel 2010, 2013, 2013 RT, 2016
  • Word Automation Services
  • Microsoft Internet Explorer 9, 10, 11
  • Microsoft Edge
  • Microsoft .NET Framework 2.0, 3.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2
  • .NET Core 2.0
  • Microsoft Exchange Server 2010, 2013, 2016
  • Microsoft Project Server 2010, 2013
  • Microsoft Infopath 2013
  • Microsoft SharePoint Foundation 2013
  • Microsoft SharePoint Server 2010
  • Microsoft SharePoint Enterprise Server 2013, 2016
  • ChakraCore
  • C SDK for Azure IoT
  • C# SDK for Azure IoT
  • Java SDK for Azure IoT
  • Windows Host Compute Service Shim
RISK
GOVERNMENT
Large and medium government entities: 
High
Small government entities: 
Medium
BUSINESS
Large and medium business entities: 
High
Small business entities: 
Medium
Home Users: 
Low
Description: 

Multiple vulnerabilities have been discovered in Microsoft products, the most severe of which could allow for code execution.

A full list of all vulnerabilities can be found at the links in the references below.

Successful exploitation of the most severe of these vulnerabilities could result in an attacker gaining the same privileges as the logged on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.

Actions: 
  • After appropriate testing, immediately apply patches or appropriate mitigations provided by Microsoft to vulnerable systems.
  • Run all software as a non-privileged user (one without administrative rights) to diminish the effects of a successful attack.
  • Remind all users not to visit untrusted websites or follow links provided by unknown or untrusted sources.
  • Inform and educate users regarding threats posed by hypertext links contained in emails or attachments especially from untrusted sources.
  • Apply the Principle of Least Privilege to all systems and services.