Microsoft Word 2000 WordPerfect Converter Remote Code Execution Vulnerability

Bugtraq ID:	34469
Class:	Boundary Condition Error
CVE:	CVE-2009-0088
Remote:	Yes
Local:	No
Published:	Apr 14 2009 12:00AM
Updated:	Apr 17 2009 02:06PM
Credit:	Michael Sutton of VeriSign iDefense Labs
Vulnerable:	Microsoft Word 2000 SR1a + Microsoft Office 2000 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 Microsoft Word 2000 SR1 + Microsoft Office 2000 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 Microsoft Word 2000 SP3 + Microsoft Office 2000 SP3 - Microsoft Windows 2000 Professional SP3 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 98 - Microsoft Windows 98SE - Microsoft Windows ME - Microsoft Windows NT Workstation 4.0 SP6a - Microsoft Windows NT Workstation 4.0 SP6 - Microsoft Windows NT Workstation 4.0 SP5 - Microsoft Windows NT Workstation 4.0 SP4 - Microsoft Windows NT Workstation 4.0 SP3 - Microsoft Windows NT Workstation 4.0 SP2 - Microsoft Windows NT Workstation 4.0 SP1 - Microsoft Windows NT Workstation 4.0 - Microsoft Windows XP Home SP1 - Microsoft Windows XP Home - Microsoft Windows XP Professional SP1 - Microsoft Windows XP Professional Microsoft Word 2000 SP2 + Microsoft Office 2000 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 Microsoft Word 2000 + Microsoft Office 2000 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 Microsoft Office Converter Pack 0 Avaya Messaging Application Server MM 3.1 Avaya Messaging Application Server MM 3.0 Avaya Messaging Application Server MM 2.0 Avaya Messaging Application Server MM 1.1 Avaya Messaging Application Server 0
Not Vulnerable:

Microsoft Word 2000 WordPerfect Converter Remote Code Execution Vulnerability

Microsoft Word 2000 is prone to a remote code-execution vulnerability because it fails to properly validate an unspecified string when parsing a WordPerfect document.

An attacker could exploit this issue to execute arbitrary code with the privileges of the currently logged-in user. Failed exploit attempts may result in denial-of-service conditions.

Microsoft Word 2000 WordPerfect Converter Remote Code Execution Vulnerability

Currently we are not aware of any working exploits. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

Microsoft Word 2000 WordPerfect Converter Remote Code Execution Vulnerability

Solution:
The vendor has released an advisory and updates. Please see the references for more information.

UPDATE (April 16, 2009): Before installing this update, users are advised to undo any workarounds related to disabling converters.


Microsoft Word 2000 SR1

• Microsoft Security Update for Office 2000 (KB921606)
  http://www.microsoft.com/downloads/details.aspx?familyid=95876927-e612 -414c-bdec-3632a3100415&displaylang=en

Microsoft Word 2000 SP3

• Microsoft Security Update for Office 2000 (KB921606)
  http://www.microsoft.com/downloads/details.aspx?familyid=95876927-e612 -414c-bdec-3632a3100415&displaylang=en

Microsoft Word 2000 SP2

• Microsoft Security Update for Office 2000 (KB921606)
  http://www.microsoft.com/downloads/details.aspx?familyid=95876927-e612 -414c-bdec-3632a3100415&displaylang=en

Microsoft Word 2000

• Microsoft Security Update for Office 2000 (KB921606)
  http://www.microsoft.com/downloads/details.aspx?familyid=95876927-e612 -414c-bdec-3632a3100415&displaylang=en

Microsoft Office Converter Pack 0

• Microsoft Security Update for Microsoft Office 2003 File Converter Pack (KB960476)
  http://www.microsoft.com/downloads/details.aspx?familyid=d763fae3-b2af -47f9-a554-ec786766b3c3&displaylang=en

Microsoft Word 2000 SR1a

• Microsoft Security Update for Office 2000 (KB921606)
  http://www.microsoft.com/downloads/details.aspx?familyid=95876927-e612 -414c-bdec-3632a3100415&displaylang=en

Microsoft Word 2000 WordPerfect Converter Remote Code Execution Vulnerability

References:

• Microsoft Homepage (Microsoft)
  
• MS09-010: Reducing the text converter attack surface (Microsoft Security Research & Defense)
  
• iDefense Security Advisory 04.14.09: Microsoft Word 2000 WordPerfect 6.x Conver (iDefense Labs )
  
• ASA-2009-131 MS09-010 Vulnerabilities in WordPad and Office Text Converters (Avaya)
  
• Microsoft Security Bulletin MS09-010 (Microsoft)
  
• Microsoft Word 2000 WordPerfect 6.x Converter Stack Corruption Vulnerability (iDefense Labs)