Rule

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Sid
3-13834

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

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Impact:
Denial of Service. Information disclosure. Loss of integrity. Complete admin access.

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Detailed Information:
The setRequestHeader method of the XMLHttpRequest object in Microsoft Internet Explorer 7 does not block dangerous HTTP request headers when certain 8-bit character sequences are appended to a header name, which allows remote attackers to (1) conduct HTTP request splitting and HTTP request smuggling attacks via an incorrect Content-Length header, (2) access arbitrary virtual hosts via a modified Host header, and (3) bypass referrer restrictions via an incorrect Referer header.

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Affected Systems:
Microsoft Internet Explorer 7

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Attack Scenarios:


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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.

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-2008-1544:
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2008-1544

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