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Microsoft Word Malformed Data Structures Vulnerability
Secunia Advisory: SA23205
Release Date: 2006-12-11
Last Update: 2007-02-14
Popularity: 22,379 views

Critical:
Extremely critical
Impact: System access
Where: From remote
Solution Status: Vendor Patch

Software:Microsoft Office 2000
Microsoft Office 2003 Professional Edition
Microsoft Office 2003 Small Business Edition
Microsoft Office 2003 Standard Edition
Microsoft Office 2003 Student and Teacher Edition
Microsoft Office 2004 for Mac
Microsoft Office XP
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

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CVE reference:CVE-2006-6456


Description:
A vulnerability has been reported in Microsoft Word, which can be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to an unspecified error when processing data structures. This can be exploited to cause a memory corruption via specially crafted data structures in a Word document.

NOTE: The vulnerability is already being actively exploited.

Solution:
Apply patches.

Microsoft Word 2000 (with Office 2000 SP3):
http://www.microsoft.com/downloads/de...=F1E61E6A-BE3D-4536-AF76-A11D5CE67199

Microsoft Word 2002 (with Office XP SP3):
http://www.microsoft.com/downloads/de...=A1CA8DD7-0622-4D66-A85F-A6586545EF9D

Microsoft Word 2003 (with Office 2003 SP2):
http://www.microsoft.com/downloads/de...=882F8503-DA72-43C9-B556-A002EC58F289

Microsoft Word Viewer 2003:
http://www.microsoft.com/downloads/de...=FB59798B-AFE2-4103-9991-CBDD7686F9AD

Microsoft Works Suite 2004:
http://www.microsoft.com/downloads/de...=A1CA8DD7-0622-4D66-A85F-A6586545EF9D

Microsoft Works Suite 2005:
http://www.microsoft.com/downloads/de...=A1CA8DD7-0622-4D66-A85F-A6586545EF9D

Microsoft Works Suite 2006:
http://www.microsoft.com/downloads/de...=A1CA8DD7-0622-4D66-A85F-A6586545EF9D

Microsoft Office 2004 for Mac:
http://www.microsoft.com/mac/

Provided and/or discovered by:
Reported as a 0-day.

The vendor also credits Shih-hao Weng, Information and Communication Security Technology Center.

Changelog:
2006-12-12: Added CVE reference.
2007-02-13: Added additional information from Microsoft. Updated "Solution" section.

Original Advisory:
MS07-014 (KB929434):
http://www.microsoft.com/technet/security/Bulletin/MS07-014.mspx

Microsoft:
http://blogs.technet.com/msrc/archive...10/new-report-of-a-word-zero-day.aspx

Other References:
SA23232:
http://secunia.com/advisories/23232/

CERT VU#166700:
http://www.kb.cert.org/vuls/id/166700


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