Rule

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Sid
3-15304

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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:
Unknown.

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Detailed Information:
Microsoft Internet Explorer 7 does not properly handle errors during attempted access to deleted objects, which allows remote attackers to execute arbitrary code via a crafted HTML document, related to CFunctionPointer and the appending of document objects, aka "Uninitialized Memory Corruption Vulnerability."

WARNING
In order to avoid potential evasion techniques, http_inspect should be configured with "flow_depth 0" so that all HTTP server response traffic is inspected.
 
Setting flow_depth 0 will cause performance problems in some situations.
WARNING

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Affected Systems:
Microsoft Internet Explorer 7  

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Attack Scenarios:
An attacker needs to supply a malformed file to be read by Internet Explorer.

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Ease of Attack:
Difficult.

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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.

Apply the appropriate vendor supplied patches.

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Contributors:
Sourcefire Vulnerability Research Team
This document was generated from data supplied by the National Vulnerability Database. A product of the National Institute of Standards and Technology.
For more information see http://nvd.nist.gov/

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Additional References:

NIST CVE-2009-0075:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2009-0075
  
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