6509.txt

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Rule: 

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Sid: 
6509

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Summary: 
This event is generated when an attempt is made to exploit a known vulnerability in Microsoft Internet Explorer.

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Impact: 
Serious. Execution of code is possible.

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Detailed Information:
Microsoft Internet Explorer contains a programming error in the way that it processes MIME HTML links (mhtml) which are commonly embedded in HTML email.  The error in processing the links may allow a remote attacker to overflow a fixed length buffer and execute code of their choosing on the target system.

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Affected Systems:
Microsoft Internet Explorer 6.0 SP2
Microsoft Internet Explorer 6.0 SP1
Microsoft Internet Explorer 6.0
Microsoft Internet Explorer 7.0 Beta 2
Microsoft Internet Explorer 7.0 Beta 1
 
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Attack Scenarios: 
An attacker needs to supply a vulnerable client with a malformed mthml link in either a web page or email. If this link is too long, it may be possible to overflow a fixed length buffer and execute code.

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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: 
Upgrade to the latest non-affected version of the software

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Contributors:
Sourcefire Vulnerability Research Team
Alex Kirk <[e-mail]>
Nigel Houghton <[e-mail]>

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Additional References:

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