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Microsoft Visual Basic for Applications Buffer Overflow
Secunia Advisory: SA9666
Release Date: 2003-09-03
Last Update: 2003-09-04
Popularity: 16,503 views

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

Software:Microsoft Access 2000
Microsoft Access 2002
Microsoft Access 97
Microsoft Business Solutions Dynamics 6.x
Microsoft Business Solutions Dynamics 7.x
Microsoft Business Solutions eEnterprise 6.x
Microsoft Business Solutions eEnterprise 7.x
Microsoft Business Solutions Great Plains 7.x
Microsoft Business Solutions Solomon 4.x
Microsoft Business Solutions Solomon 5.x
Microsoft Office 2000
Microsoft Office 97
Microsoft Office Project 2002
Microsoft Office XP
Microsoft Project 2000
Microsoft Project Professional 2002
Microsoft Publisher 2002
Microsoft Visio 2000
Microsoft Visio 2002
Microsoft Visual Basic for Applications SDK 5.x
Microsoft Visual Basic for Applications SDK 6.x
Microsoft Word 98(J)
Microsoft Works Suite 2001
Microsoft Works Suite 2002
Microsoft Works Suite 2003

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CVE reference:CVE-2003-0347


Description:
A vulnerability has been identified in Microsoft Visual Basic for Applications (VBA) allowing malicious Office or HTML documents to cause a buffer overflow.

The problem is that VBA (VBE.DLL and VBE6.DLL) doesn't check the "ID" parameter properly before processing the document. This allows malicious people to create a document, which could cause a buffer overflow and execute arbitrary code.

This affects all programs, which use VBA to process documents. This includes Internet Explorer if Microsoft Office programs are installed because Office documents are automatically opened with a helper application.

Solution:
Apply patches:

Microsoft Office 2000:
http://microsoft.com/downloads/detail...-A3EC-9F738017F275&displaylang=en

Microsoft Office XP (including Publisher 2002):
http://microsoft.com/downloads/detail...-A33D-AD6B4B6A8FF4&displaylang=en

Microsoft Project 2000:
http://microsoft.com/downloads/detail...-9733-B92A2B7BFD0D&displaylang=en

Microsoft Project 2002:
http://microsoft.com/downloads/detail...-8209-6E07D4603CCB&displaylang=en

Microsoft Visio 2002:
http://microsoft.com/downloads/detail...-BA2A-17AF02E9C73E&displaylang=en

Microsoft VBA Patch:
http://microsoft.com/downloads/detail...-9729-AB9094C9BD3F&displaylang=en

The Microsoft VBA patch can be installed on systems running the following applications:
Microsoft VBA 5.0
Microsoft VBA 6.0
Microsoft VBA 6.2
Microsoft VBA 6.3.
Microsoft Access 97
Microsoft Excel 97
Microsoft PowerPoint 97
Microsoft Word 97
Microsoft Word 98(J)
Microsoft Visio 2000
Microsoft Works Suite 2001
Microsoft Business Solutions Great Plains 7.5
Microsoft Business Solutions Dynamics 6.0
Microsoft Business Solutions Dynamics 7.0
Microsoft Business Solutions eEnterprise 6.0
Microsoft Business Solutions eEnterprise 7.0
Microsoft Business Solutions Solomon 4.5
Microsoft Business Solutions Solomon 5.0
Microsoft Business Solutions Solomon 5.5

Microsoft recommends users to visit Office Update at:
http://www.office.microsoft.com/ProductUpdates/default.aspx

Provided and/or discovered by:
Yuji "The Ninja" Ukai
eEye Digital Security

Changelog:
2003-09-04: Updated with information from eEye.

Original Advisory:
http://www.microsoft.com/technet/security/bulletin/MS03-037.asp
http://www.eeye.com/html/Research/Advisories/AD20030903-2.html


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