Photo Manager Pro 4.4.0 iOS - Code Injection Vulnerability

Document Title:
===============
Photo Manager Pro 4.4.0 iOS - Code Injection Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1444


Release Date:
=============
2015-03-10


Vulnerability Laboratory ID (VL-ID):
====================================
1444


Common Vulnerability Scoring System:
====================================
6.9


Product & Service Introduction:
===============================
Do you have troubles for managing thousands of photos and videos? Do you have any private photos or videos? Are you looking for a photo portfolio app? 
Photo Manager Pro is exactly you are looking for. Photo Manager Pro is extremely easy to use. TP Transfer: Transfer folders and files between computer 
and device over wifi network. HTTP Transfer: Transfer files between computer and device over wifi network. View photos in the browser. Peer to Peer 
Transfer: Directly transfer files between iPad, iPhone and iPod Touch over wifi network. USB Transfer: Import/Export photos from/to iTunes file sharing.
Basic Transfer: Import/Export photos from/to the Photos app.

(Copy of the Vendor Homepage: https://itunes.apple.com/de/app/photo-manager-pro/id393858562 & http://www.linkusnow.com/photomanager/help/ipad/help_main.php )


Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered a script code injection vulnerability in the official Linkus Photo Manager Pro v4.4.0 iOS mobile web-application.


Vulnerability Disclosure Timeline:
==================================
2015-03-10:	Public Disclosure (Vulnerability Laboratory)


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


Affected Product(s):
====================
Linkus
Product: Photo Manager Pro - iOS Mobile Web Application (Wifi) 4.4.0


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


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


Technical Details & Description:
================================
A script code execution web vulnerability has been discovered in the official Linkus Photo Manager Pro v4.4.0 iOS mobile web-application.
The vulnerability allows remote attackers to inject own malicious script codes to the application-side of the mobile iOS web-application.

The vulnerability is located in the `folderName` value of the `newfolder.action` module. Remote attackers are able to manipulate the 
`folderName` value in the `index.html#?w=300` file POST method request to compromise the application, user session information or connected 
device components. The attacker tampers the new Folder POST method request to exchange the regular folderName value with special crafted code. 
The input context becomes visible in the main index service or subfolder (path). The attack vector of the vulnerability is located on the 
application-side. The injection point is the vulnerable folder name input field and the execution point occurs in the main index or sub directory.

The security risk of the script code execution vulnerability is estimated as high with a cvss (common vulnerability scoring system) count of 6.9.
Exploitation of the script code execution vulnerability requires no user interaction or privileged web-application user account with password.
Successful exploitation of the vulnerability results in session hijacking, persistent phishing, persistent external redirects and persistent 
manipulation function or connected module context.

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

Vulnerable Module(s):
				[+] newfolder.action

Vulnerable Parameter(s):
				[+] folderName

Affected Module(s):
				[+] Index (http://localhost:8080)
				[+] Sub Category Path


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

PoC: Create Folder
<div id="main"><div id="breadcrumb">Home</div>
<div id="content"><ul id="folders_ul"><li><div class="folder_item_bg"><img src="images/blank.gif" class="blank"><a href="browse_folder.html?folderID=1"><img src="images/blank_thumbnail.png" height="86" width="80"></a></div><div class="folder_label"><a href="browse_folder.html?folderID=1">Family</a></div></li><li><div class="folder_item_bg"><img src="images/blank.gif" class="blank"><a href="browse_folder.html?folderID=2"><img src="images/blank_thumbnail.png" height="86" width="80"></a></div><div class="folder_label"><a href="browse_folder.html?folderID=2">Friends</a></div></li><li><div class="folder_item_bg"><img src="images/blank.gif" class="blank"><a href="browse_folder.html?folderID=3"><img src="images/blank_thumbnail.png" height="86" width="80"></a></div><div class="folder_label"><a href="browse_folder.html?folderID=3">Travel</a></div></li><li><div class="folder_item_bg"><img src="images/blank.gif" class="blank"><a href="browse_folder.html?folderID=4"><img src="images/blank_thumbnail.png" height="86" width="80"></a></div><div class="folder_label"><a href="browse_folder.html?folderID=4">Shopping</a></div></li><li><div class="folder_item_bg"><img src="images/blank.gif" class="blank"><a href="browse_folder.html?folderID=5"><img src="images/blank_thumbnail.png" height="86" width="80"></a></div><div class="folder_label"><a href="browse_folder.html?folderID=5">test;[SCRIPT CODE EXECUTION VULNERABILITY VIA FOLDERNAME!]></a></div></iframe></a></div></li></ul></div>
    </div>

... after surfing to the created folder 

<div id="wrapper">
	    <div id="header">
	        <div id="title">
	            <h1>Photo Manager Pro</h1>
	        </div>
	    </div>
	    <div id="main">
<div id="breadcrumb"><span id="breadcrumb_span"><a href="index.html">Home</a><label> > 
<a href="browse_folder.html?folderID=5">test;[SCRIPT CODE EXECUTION VIA FOLDERNAME!]></a></label></x></a></label></span></div>
			<form id="download_form" action="download.action" method="post">
	        <div id="content"><ul></ul></div>
			</form>
	    </div>


PoC: Vulnerable Source
      }
      function createFolder() {
        $.ajax({
             type: 'POST',
             url: 'newfolder.action',
             cache: false,
             dataType: 'json',
               data: {folderName:$('#foldername').attr('value'), isSubfolder:$('#is_subfolder_hidden').attr('value'), parentFolderID:$('#parent_folder_hidden').attr('value')},
             async: false,
             success: function(result) {
                window.location.reload(false);
            }
        });
      }
  </script>


--- Poc Session Logs [POST] (Inject) ---
Status: 200[OK]
POST http://localhost:8080/newfolder.action
   Request Header:
      Host[localhost:8080]
      User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0]
      Accept[application/json, text/javascript, */*; q=0.01]
   POST-Daten:
      folderName[SCRIPT CODE INJECTION!]
      isSubfolder[0]
      parentFolderID[0]
   Response Header:
      Accept-Ranges[bytes]
      Content-Length[23]
      Date[Do., 05 März 2015 20:34:46 GMT]
-
Status: 200[OK]
GET http://localhost:8080/index.html 
   Request Header:
      Host[localhost:8080]
      User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0]
      Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
   Response Header:
      Accept-Ranges[bytes]
      Content-Length[9421]
      Date[Do., 05 März 2015 20:34:46 GMT]
-
Status: 200[OK]
GET http://localhost:8080/javascript/linkus.js 
   Request Header:
      Host[localhost:8080]
      User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0]
      Accept[*/*]
   Response Header:
      Accept-Ranges[bytes]
      Content-Length[397]
      Date[Do., 05 März 2015 20:34:46 GMT]



Reference(s):
http://localhost:8080/index.html
http://localhost:8080/newfolder.action
http://localhost:8080/index.html#?w=300
http://localhost:8080/browse_folder.html?folderID=5


Solution - Fix & Patch:
=======================
The vulnerability can be patched by a secure parse and encode of the vulnerable folderName value. 
Restrict the input and filter the context by usage of a own exception to prevent the application-side code execution.


Security Risk:
==============
The security risk of the script code execution vulnerability in the mobile web-application is estimated as high. (CVSS 6.9)


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


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