PhotoWebsite v3.1 iOS - File Include Web Vulnerability

[Vulnerability Lab <research@xxxxxxxxxxxxxxxxxxxxx>]

Document Title:
===============
PhotoWebsite v3.1 iOS - File Include Web Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1474


Release Date:
=============
2015-05-04


Vulnerability Laboratory ID (VL-ID):
====================================
1476


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


Product & Service Introduction:
===============================
Photo Website lets your Camera Roll to become a website. The app let the 
iphone/ipad become a website. It is a wifi network app，
let you access camera roll photos over your pc browser. Now share Camera Roll 
to your friend is a very simple event.
Fast browsing of thumbnails

(https://itunes.apple.com/de/app/photo-website/id543436097)


Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered a locla file include 
vulnerability in the official PhotoWebsite v3.1 iOS mobile web-application.


Vulnerability Disclosure Timeline:
==================================
2015-05-04:     Public Disclosure (Vulnerability Laboratory)


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


Affected Product(s):
====================
AirPhoto
Product: PhotoWebsite - iOS Mobile Web Application 3.1


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


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


Technical Details & Description:
================================
A local file include web vulnerability has been discovered in the official 
PhotoWebsite v3.1 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 `mDirNameList` and `mDirUrlList` values 
of the `airphotos.ma - upload` module. Remote attackers are 
able to inject own files with malicious `mDirNameList` values in the 
`upload.action` sync request to compromise the mobile web-application. 
The local file/path include execution occcurs in the index file dir listing of 
the wifi interface. The attacker is able to inject the local 
file include request by usage of the `wifi interface` in connection with the 
vulnerable upload service module.

Remote attackers are also able to exploit the `mDirNameList` and `mDirUrlList` 
validation issue in combination with persistent injected script 
codes to execute unique local malicious attack requests. The attack vector is 
located on the application-side of the wifi service and the 
request method to inject is POST (upload) or Sync(device). To exploit the bug 
it is required to use the local device > wifi sync or (remote) 
the wifi gui.

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 vulnerability requires no user 
interaction or privileged web-application user account. Successful exploitation 
of the local file include web vulnerability results in mobile application or 
device compromise.

Request Method(s):
                                        [+] Sync

Vulnerable Module(s):
                                        [+] upload

Vulnerable File(s):
                                        [+] airphotos.ma

Vulnerable Parameter(s):
                                        [+] mDirNameList
                                        [+] mDirUrlList

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


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

PoC: airphotos.ma
<script language= "JavaScript"   type= "text/javascript">
        var mImgList =[];
        var mWidthList= [];
        var mHeightList= [];
        var mThumWidth=144
        var mDirNameList=["">[LOCAL FILE INCLUDE VULNERABILITY!]",
"Camera Roll",
"My Photo Stream",
];
        var mDirUrlList=["@%22%3E%3C[LOCAL FILE INCLUDE VULNERABILITY!]%3E%5C",
"@Camera%20Roll%5C",
"@My%20Photo%20Stream%5C",
];
        var mUserWH=true;;
        var mUseApShow=false;;
</script>


Reference(s):
http://localhost:1860/airphotos.ma


Solution - Fix & Patch:
=======================
The vulnerability can be patched by a secure parse and encode of the vulnerable 
`mDirNameList` and `mDirUrlList`   values.
Restrict the input for folder and album names on sync and disallow special 
chars.
Encode the file dir index list that shows the malicious context without secure 
parse to prevent further file include or request injection attacks.


Security Risk:
==============
The security risk of the local file include web vulnerability in the 
photowebsite wifi app is estimated as high. (CVSS 6.6)


Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri 
(bkm@xxxxxxxxxxxxxxxxx) [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@xxxxxxxxxxxxxxxxxxxxx         - 
research@xxxxxxxxxxxxxxxxxxxxx                        - admin@xxxxxxxxxxxxxxxxx
Section:    magazine.vulnerability-db.com       - 
vulnerability-lab.com/contact.php                     - 
evolution-sec.com/contact
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@xxxxxxxxxxxxxxxxxxxxx or research@xxxxxxxxxxxxxxxxxxxxx) to get a 
permission.

                                Copyright © 2015 | Vulnerability Laboratory - 
[Evolution Security GmbH]™



-- 
VULNERABILITY LABORATORY - RESEARCH TEAM
SERVICE: www.vulnerability-lab.com
CONTACT: research@xxxxxxxxxxxxxxxxxxxxx
PGP KEY: 
http://www.vulnerability-lab.com/keys/admin@xxxxxxxxxxxxxxxxxxxxx%280x198E9928%29.txt