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Category:   Application (Generic)  >   Microsoft Word Vendors:   Microsoft
Microsoft Word Unchecked Count Vulnerability Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1017390
SecurityTracker URL:
CVE Reference:   CVE-2006-6561   (Links to External Site)
Updated:  Feb 13 2007
Original Entry Date:  Dec 16 2006
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 2000, 2002; 2003, 2004 for Mac
Description:   A vulnerability was reported in Microsoft Word. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create a specially crafted Word document that, when loaded by the target user, will trigger a buffer overflow and execute arbitrary code on the target system. The code will run with the privileges of the target user.

The vulnerability occurs when Word parses an unchecked count in the document.

'disco' released a demonstration exploit on December 12, 2006, available at:

On December 15, 2006, Microsoft confirmed that the exploit demonstrates a new, previously unreported vulnerability.

This vulnerability is different than Alert ID 1017339, CVE-2006-5994. This vulnerability is also different than Alert ID 1017358, CVE-2006-6456.

Microsoft indicates that Word Viewer 2003 is also affected.

Impact:   A remote user can create a Word document that, when loaded by the target user, will execute arbitrary code on the target user's system.
Solution:   On February 13, 2007, the vendor issued the following fixes:

Microsoft Word 2000:

Microsoft Word 2002:

Microsoft Word 2003:

Microsoft Word Viewer 2003:

Microsoft Works Suite 2004:

Microsoft Works Suite 2005:

Microsoft Works Suite 2006:

Microsoft Office 2004 for Mac:

The Microsoft advisory is available at:

The original Microsoft blog entry is available at:

Vendor URL: (Links to External Site)
Cause:   Access control error
Underlying OS:  UNIX (macOS/OS X), Windows (2000), Windows (2003), Windows (XP)

Message History:   None.

 Source Message Contents

[Original Message Not Available for Viewing]

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