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Microsoft Word Malformed Object Pointer Vulnerability
Secunia Advisory: SA20153
Release Date: 2006-05-19
Last Update: 2006-06-13
Popularity: 195,755 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 XP
Microsoft Word 2000
Microsoft Word 2002
Microsoft Word 2003
Microsoft Word Viewer 2003
Microsoft Works Suite 2001
Microsoft Works Suite 2002
Microsoft Works Suite 2003
Microsoft Works Suite 2004
Microsoft Works Suite 2005
Microsoft Works Suite 2006

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CVE reference:CVE-2006-2492


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 a memory corruption error when handling Word documents using a malformed object pointer.

Successful exploitation allows execution of arbitrary code.

NOTE: This vulnerability is being actively exploited.

Solution:
Apply patches.

Microsoft Word 2000:
http://www.microsoft.com/downloads/de...=507D97B5-8B20-41B2-AE8B-27F2BF5198CD

Microsoft Word 2002:
http://www.microsoft.com/downloads/de...=4CDE644B-BE05-4680-B0EF-DF563095563C

Microsoft Word 2003:
http://www.microsoft.com/downloads/de...=ADEA09B4-481A-4908-8B77-0630AC679CAC

Microsoft Word Viewer 2003:
http://www.microsoft.com/downloads/de...=6089B843-61FF-469F-A38B-BD4FFEFF0552

Microsoft Works Suite 2000:
http://www.microsoft.com/downloads/de...=507D97B5-8B20-41B2-AE8B-27F2BF5198CD

Microsoft Works Suite 2001:
http://www.microsoft.com/downloads/de...=507D97B5-8B20-41B2-AE8B-27F2BF5198CD

Microsoft Works Suite 2002:
http://www.microsoft.com/downloads/de...=4CDE644B-BE05-4680-B0EF-DF563095563C

Microsoft Works Suite 2003:
http://www.microsoft.com/downloads/de...=4CDE644B-BE05-4680-B0EF-DF563095563C

Microsoft Works Suite 2004:
http://www.microsoft.com/downloads/de...=4CDE644B-BE05-4680-B0EF-DF563095563C

Microsoft Works Suite 2005:
http://www.microsoft.com/downloads/de...=4CDE644B-BE05-4680-B0EF-DF563095563C

Microsoft Works Suite 2006:
http://www.microsoft.com/downloads/de...=4CDE644B-BE05-4680-B0EF-DF563095563C

Provided and/or discovered by:
This vulnerability has been discovered in the wild as a "Zero-day" while investigating a system compromise.

The vendor also credits Shih-hao Weng.

Changelog:
2006-05-23: Added CVE reference. Updated advisory.
2006-06-13: Added additional information from the vendor. Updated "Description" and "Solution" sections. Added link to vendor advisory.

Original Advisory:
MS06-027 (KB917336):
http://www.microsoft.com/technet/security/Bulletin/MS06-027.mspx

Microsoft (KB919637):
http://www.microsoft.com/technet/security/advisory/919637.mspx

Other References:
SANS:
http://isc.sans.org/diary.php?storyid=1345

US-CERT VU#446012:
http://www.kb.cert.org/vuls/id/446012


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