Microsoft has released a security bulletin and software updates to address the Microsoft Office Word RTF file processing arbitrary code execution vulnerability.
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.
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
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.
Microsoft has released a security bulletin available at the following link: MS14-017
Microsoft has released a security advisory at the following link: 2953095
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.
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.
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 are advised to monitor affected systems.
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.
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.
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