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Microsoft Word and Excel Execution of Arbitrary Code
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Secunia Advisory:
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SA10194
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Release Date:
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2003-11-11
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Last Update:
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2003-11-12
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Popularity:
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15,253 views
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Critical:
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Highly critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Microsoft Office 2000
Microsoft Office 97
Microsoft Word 2000
Microsoft Word 2002
Microsoft Word 97
Microsoft Word 98(J)
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| CVE reference: | CVE-2003-0820
CVE-2003-0821
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Description:
Microsoft has issued patches for Microsoft Excel and Word. These fix two vulnerabilities allowing malicious people to execute arbitrary code on a user's system.
It is possible to create Excel documents, which can bypass the Macro security check in Microsoft Excel. This can be exploited by malicious people to execute arbitrary Macro code, which can perform the same actions as the current user.
The length of Macro names isn't properly verified in Word. This can be exploited to cause a buffer overflow, which may cause Word to crash and possibly allow arbitrary code execution.
This may be exploited automatically in Internet Explorer by a malicious website because Internet Explorer automatically launches the helper application, which is installed by Microsoft Office.
The security issue reported in Word is related to:
SA10020
Solution:
Patches are available:
Microsoft Excel 97:
http://www.microsoft.com/downloads/de...-A628-2C3A1ED5D51B&displaylang=en
Microsoft Excel 2000:
http://www.microsoft.com/downloads/de...-AAE0-062BDD7417D5&displaylang=en
Microsoft Excel 2002:
http://www.microsoft.com/downloads/de...-A235-581617287560&displaylang=en
Microsoft Word 97:
http://www.microsoft.com/downloads/de...-949F-5F423E68C7AF&displaylang=en
Microsoft Word 98(J):
http://www.microsoft.com/downloads/de...-BD89-6F7B5AF2BDB1&displaylang=en
Microsoft Word 2000 and Microsoft Works Suite 2001:
http://www.microsoft.com/downloads/de...-BBAC-2C6B6E66D984&displaylang=en
Microsoft Word 2002, Microsoft Works Suite 2002, Microsoft Works Suite 2003, and Microsoft Works Suite 2004:
http://www.microsoft.com/downloads/de...-8FEE-27059A29B604&displaylang=en
Provided and/or discovered by:
Kazuyuki Housaka
Original Advisory:
Vulnerability in Microsoft Word and Microsoft Excel Could Allow Arbitrary Code to Run (831527)
http://www.microsoft.com/technet/security/bulletin/MS03-050.asp
Other References:
SA10020:
http://secunia.com/advisories/10020/
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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