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Microsoft Browser Client Context Tool Three Vulnerabilities
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Secunia Advisory:
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SA13365
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Release Date:
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2004-12-07
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Popularity:
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20,851 views
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Critical:
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Highly critical
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Impact:
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Cross Site Scripting
System access
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Where:
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From remote
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Solution Status:
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Unpatched
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| Software: | Microsoft Browser Client Context Tool (W3Who.dll)
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| CVE reference: | CVE-2004-1133
CVE-2004-1134
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Description:
Nicolas Gregoire has reported some vulnerabilities in Microsoft Browser Client Context Tool (W3Who.dll), which can be exploited by malicious people to conduct cross-site scripting attacks or potentially compromise a vulnerable system.
1) Invalid input passed to the ISAPI extension is not properly sanitised before being returned to users in error messages. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of a vulnerable web site.
Example:
http://[host]/scripts/w3who.dll?bogus=[code]
2) Input passed in HTTP headers is not properly sanitised before being displayed. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of a vulnerable web site.
3) A boundary error within the processing of parameters can be exploited to cause a buffer overflow by passing an overly long parameter.
Example:
http://[host]/scripts/w3who.dll?AAAAAAAAA...[519 to 12571]....AAAAAAAAAAAAA
Solution:
Remove the W3Who.dll ISAPI extension.
Provided and/or discovered by:
Nicolas Gregoire, Exaprobe.
Original Advisory:
http://www.exaprobe.com/labs/advisories/esa-2004-1206.html
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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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