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Vulnerability Alert

Microsoft Office Word RTF File Processing Remote Code Execution Vulnerability

 
Threat Type:CWE-119: Buffer Errors
IntelliShield ID:33490
Version:2
First Published:2014 March 24 19:53 GMT
Last Published:2014 April 08 17:18 GMT
Port: Not available
CVE:CVE-2014-1761
Urgency:Possible use
Credibility:Confirmed
Severity:Moderate Damage
CVSS Base:9.3 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:7.7
 
Version Summary:Microsoft has released a security bulletin and software updates to address the Microsoft Office Word RTF file processing arbitrary code execution vulnerability.
 
 
Description
A vulnerability in RTF file processing components of Microsoft Office Word could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system.

The vulnerability is due to improper processing of malicious RTF content in document files. An attacker could exploit this vulnerability by convincing a targeted user to open a malicious document. An exploit could allow the attacker to execute arbitrary code on the system with the privileges of the user.

Microsoft has confirmed the vulnerability in a security bulletin and released software updates.
 
Warning Indicators
The following Microsoft applications are affected:
  • Microsoft Word 2003 SP3 and prior
  • Microsoft Word 2007 SP3 and prior
  • Microsoft Word 2010 SP2 and prior (32-bit editions)
  • Microsoft Word 2010 SP2 and prior (64-bit editions)
  • Microsoft Word 2013 (32-bit editions)
  • Microsoft Word 2013 (64-bit editions)
  • Microsoft Word 2013 RT
  • Microsoft Word Viewer
  • Microsoft Office Compatibility Pack SP3 and prior
  • Microsoft Office for Mac 2011
  • Microsoft Office Web Apps 2010 SP2 and prior
  • Microsoft Office Web Apps Server 2013 
 
IntelliShield Analysis
To exploit the vulnerability, the attacker may provide a file to the user and persuade the user to open or execute the file by using misleading language or instructions.

Microsoft reports that limited attacks that use this vulnerability have occurred in the wild.
 
Vendor Announcements
Microsoft has released a security bulletin available at the following link: MS14-017

Microsoft has released a security advisory at the following link: 2953095
 
Impact
An unauthenticated, remote attacker could exploit this vulnerability to execute arbitrary code on a targeted system with the privileges of the user. If the user holds elevated privileges, the attacker could completely compromise the affected system.
 
Technical Information
The vulnerability is due to improper processing of malicious RTF content in documents processed by Microsoft Office Word.

An unauthenticated, remote attacker could exploit this vulnerability by convincing a targeted user to open a malicious document. The processing of the document could trigger an unspecified error condition that the attacker could use to execute arbitrary code on the system with the privileges of the user.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Administrators may consider applying the Microsoft Fix it solution to prevent the opening of RTF files in Microsoft Office Word.

Users are advised not to open unsolicited email attachments. Users should verify that attachments are safe before opening them.

Users may consider applying the Microsoft Office File Block policy to prevent the opening of suspicious or unrecognized documents in Microsoft Office.

Administrators may consider installing the Enhanced Mitigation Experience Toolkit.

Administrators are advised to monitor affected systems.
 
Patches/Software
Microsoft customers can obtain updates directly by using the links in the security bulletin. These updates are also distributed by Windows automatic update features and available on the Microsoft Update service. Microsoft Windows Server Update Services (WSUS), Systems Management Server, and System Center Configuration Manager can assist administrators in deploying software updates.

Signatures
 
Cisco Intrusion Prevention System (IPS) 6.0
Signature IDSignature NameReleaseLatest Release Date
1709/0Microsoft Office Word RTF Document Processing Arbitrary Code Execution VulnerabilityS7802014 Mar 25 
 
Alert History
 

Version 1, March 24, 2014, 3:53 PM: Microsoft Office Word contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system. Updates are not available.

Initial Release


Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
Microsoft, Inc.Office Compatibility Pack SP3 Base
Microsoft, Inc.Office for Mac 2011 Base
Microsoft, Inc.Word 2003 Base, SP1, SP2, SP3 | 2007 Base, SP1, SP2, SP3 | 2010 32-bit Edition, 64-bit Edition, SP1, SP2 | 2013 Base, RT, 32-bit editions, 64-bit editions
Microsoft, Inc.Word Viewer Original Release Base
Microsoft, Inc.Office Web Apps 2010 Base, SP1, SP2 | 2013 Base

Associated Products:
Microsoft, Inc.Office 2003 Base, SP1, SP2, SP3 | 2007 Base, SP1, SP2, SP3 | 2010 Base, SP1, SP2 | 2013 32-bit editions, 64-bit editions | 2013 RT Base




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