Summary

• A vulnerability in the graphics component of Microsoft Office could allow a local attacker to access sensitive information on a targeted system.
  
  The vulnerability is due to improper memory operations that are performed by the affected software when handling user-supplied input. An attacker could exploit this vulnerability by accessing the system and executing an application that submits malicious input to the affected software. A successful exploit could allow the attacker to access sensitive information, which could be used to conduct additional attacks.
  
  Microsoft confirmed the vulnerability and released software updates.

Analysis

• To exploit this vulnerability, the attacker must have user-level access to the targeted system. This access requirement could reduce the likelihood of a successful exploit.
  
  Microsoft addressed this vulnerability by correcting how the affected software handles objects in memory.

Safeguards

• Administrators are advised to apply the appropriate updates.
  
  Administrators are advised to allow only trusted users to access local systems.
  
  Administrators are advised to allow only privileged users to access administration or management systems.
  
  Administrators may consider using the Microsoft Baseline Security Analyzer (MBSA) scan tool to identify common security misconfigurations and missing security updates on system endpoints.
  
  Administrators are advised to monitor critical systems.

Vendor Announcements

• Microsoft has released detailed information at the following link: Security Update Guide

Fixed Software

• Microsoft customers can obtain updates directly by using the links in the Microsoft Security Update Guide. These updates are also distributed by Windows automatic update features and are available from the Microsoft Update Catalog. Microsoft Windows Server Update Services (WSUS), Systems Management Server, and System Center Configuration Manager can assist administrators in deploying software updates.

Revision History

• Version	Description	Section	Date
  1	Initial public release.	—	Apr-10-2018

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Affected Products

• The security vulnerability applies to the following combinations of products.
  
  

  Primary Products
  Microsoft, Inc.	Office	2016 (Base, 32-bit editions, 64-bit editions)

  Associated Products