Vulnerability in Microsoft Word and Office Web Apps Could Allow Remote Code Execution (MS14-061)

ITS Advisory Number: 
2014-090
Date(s) Issued: 
Tuesday, October 14, 2014
Subject: 
Vulnerability in Microsoft Word and Office Web Apps Could Allow Remote Code Execution (MS14-061)
Overview: 

A vulnerability has been discovered in Microsoft Office that could allow for remote code execution. Successful exploitation could result in the attacker gaining the same user rights as the current user. Depending on the privileges associated with the user, an attacker could install programs; view, change, or delete data; or create new accounts with full user rights.

Systems Affected: 
  • Microsoft Word 2007 and 2010
  • Microsoft Office 2007 and 2010
  • Microsoft Office for Mac 2011
  • Microsoft Office Web Apps Server 2010
RISK
GOVERNMENT
Large and medium government entities: 
High
Small government entities: 
High
BUSINESS
Large and medium business entities: 
High
Small business entities: 
High
Home Users: 
High
Description: 

A vulnerability has been discovered in Microsoft Office that could allow for remote code execution. This vulnerability is caused when Microsoft Word does not properly handle objects in memory while parsing specially crafted Office files. At this point, system memory might be corrupted so that an attacker could execute arbitrary code in the context of the current user. Depending on the privileges associated with the user, an attacker could install programs; view, change, or delete data; or create new accounts with full user rights.

Actions: 

We recommend the following actions be taken:

  • Apply appropriate patches provided by Microsoft to vulnerable systems immediately after appropriate testing.
  • Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.
  • Remind users not to open email attachments from unknown or untrusted sources.
  • Remind users not to open email attachments on suspicious emails from trusted sources.
References: 

Microsoft:
https://technet.microsoft.com/en-us/library/security/ms14-061.aspx

CVE:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4117