Rule:

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Sid: 
4644

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Summary: 
This event is generated when an attempt is made to exploit a known vulnerability in the Microsoft Windows shell environment. In particular an attempt has been made to exploit the vulnerability via a Windows shortcut file.

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Impact: 
Serious. Remote execution of code is possible.

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Detailed Information:
A vulnerability in the way that the Windows shell handles the file properties of a shortcut file may allow an attacker to overflow a fixed length buffer and execute code of their choosing on the target system.

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Affected Systems:
Microsoft Windows XP
Microsoft Windows Server 2000 and 2003
Embedded systems using the above platforms.

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Attack Scenarios: 
An attacker would need to craft a special .lnk file and entice a user to view the file either by hosting on a web server or by sending the file as an attachment to an email message.

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Ease of Attack: 
Simple.

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False Positives:
None Known

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False Negatives:
None Known

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Corrective Action: 
Apply the appropriate vendor supplied patch

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Contributors: 
Sourcefire Research Team
Alex Kirk <akirk@sourcefire.com>
Nigel Houghton <nigel.houghton@sourcefire.com>

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Additional References:

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