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[Full-disclosure] Imagam iFiles v1.16.0 iOS - Multiple Web Vulnerabilities
- To: full-disclosure@xxxxxxxxxxxxxxxxx
- Subject: [Full-disclosure] Imagam iFiles v1.16.0 iOS - Multiple Web Vulnerabilities
- From: Vulnerability Lab <research@xxxxxxxxxxxxxxxxxxxxx>
- Date: Wed, 04 Dec 2013 15:29:57 +0100
Document Title:
===============
Imagam iFiles v1.16.0 iOS - Multiple Web Vulnerabilities
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1160
Release Date:
=============
2013-12-03
Vulnerability Laboratory ID (VL-ID):
====================================
1160
Common Vulnerability Scoring System:
====================================
8.9
Product & Service Introduction:
===============================
iFiles is the most intuitive file manager for iOS with features like
connectivity to many file cloud services,
transferring files between computer or cloud services, ability to view many
file formats (PDF viewer now
supports annotations, search and more), voice recorder, web downloader, text
file editor and more.
Supported Online Cloud Services and Protocols: Dropbox, Google Drive, iCloud,
Box.net, SkyDrive, SugarSync, AFP
(Mac Shares), FTP/FTPS, SFTP, Flickr, Picasa, Facebook, Rackspace CloudFiles,
CloudApp, PogoPlug, WebDav, Amazon
S3, Ubuntu One Files, ownCloud, 4Shared, also using Amazon S3: DreamObjects and
UltiCloud.
( Copy of the Homepage: https://itunes.apple.com/de/app/ifiles/id336683524 &
http://imagam.com )
Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered multiple vulnerabilities
in the official Imagam iFiles v1.16.0 mobile application for apple iOS.
Vulnerability Disclosure Timeline:
==================================
2013-12-03: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Affected Product(s):
====================
Imagam
Product: iFiles - Mobile Application iOS 1.16.0
Exploitation Technique:
=======================
Remote
Severity Level:
===============
Critical
Technical Details & Description:
================================
1.1
A file include- & arbitrary file upload web vulnerability has been discovered
in the official Imagam iFiles v1.16.0 mobile application for apple iOS.
An arbitrary file upload issue allows a remote attacker to upload files with
multiple extensions to bypass the validation for unauthorized access.
A file include web vulnerability allows a remote attacker to unauthorized
include local web-server file requests or external file requests.
The vulnerability is located in the vulnerable file- and folder-name value.
Remote attackers can include local file requests combined with script code
to successful exploit the issue. To include to the vulnerable foldername value
it is required to manipulate the `create folder` (add) input (POST Method).
The secound possibility to inject is the vulnerable filename value of the
misconfigured (POST Method) upload module. After the include the remote
attacker
can access the included file by requesting the regular index or sub category
folder (web interface) site.
The arbitrary file upload vulnerability is located in the vulnerable filename
value of the upload module. Attackers are also able to upload a php or js
web-shells by renaming the file with multiple extensions. The attacker uploads
for example a web-shell with the following name and extension
test.jpg.html.js.php.gif.jpg . After the upload the attacker opens the file in
the web application to delete the .gif.jpg file extension to access the
resource with elevated execution access rights.
Exploitation of the file include & arbitrary file upload web vulnerability
requires no user interaction or privilege application user account with
password.
Successful exploitation of the vulnerability results in unauthorized file
access because of a compromise after the upload of web-shells.
Request Method(s):
[+] [POST]
Vulnerable Module(s):
[+] File Upload
Vulnerable Parameter(s):
[+] filename (value) - (multiple extensions)
[+] foldername
Affected Module(s):
[+] File & Folder Dir Listing
(http://localhost:8080)
1.2
2 local command/path injection web vulnerabilities has been discovered in the
official Imagam iFiles v1.16.0 mobile application for apple iOS.
The remote web vulnerability allows to inject local commands via vulnerable
system values to compromise the apple mobile iOS application.
The vulnerability is located in the in the device name value of the file dir
und sub category listing module. Local attackers are able to inject
own malicious system specific commands or path values requests as the iOS
device name. The execute of the injected script code occurs in two
different section with persistent attack vector. The first section is the wifi
app web-interface index file/folder dir listing. The secound
execute occurs in the file/folder sub category listing. The security risk of
the local command/path inject vulnerability is estimated as high(-)
with a cvss (common vulnerability scoring system) count of 6.2(+)|(-)6.3.
Exploitation of the command/path inject vulnerability requires a low privileged
iOS device account with restricted access and no user interaction.
Successful exploitation of the vulnerability results in unauthorized execute of
system specific commands or unauthorized path requests.
Request Method(s):
[+] POST to GET
Vulnerable Parameter(s):
[+] devicename
Affected Module(s):
[+] Index- File Dir Listing
[+] Sub Folder/Category - File Dir Listing
Proof of Concept (PoC):
=======================
1.1
The file include and arbitrary file upload web vulnerability can be exploited
by remote attackers without privileged web application
user account and also without user interaction. For security demonstration or
to reproduce the vulnerability follow the provided
information and steps below.
PoC: foldername
<div id="headerHighlight">
<div id="header">
<div class="logo">
<img src="_device%20folder&path-issue-1_files/icon57.png" alt="icon57"
height="57" width="57">
<h1>iFiles</h1>
</div>
<div class="deviceName">
<h4>device bkm337€ </h4>
</div>
<div class="urlDiv">
<div class="outer">
<div class="inner">
<b>/>"<[FILE INCLUDE WEB VULNERABILITY!]%22"_device%20folder&[FILE INCLUDE WEB
VULNERABILITY!]%22">x.com/</b>
</div>
</div>
</div>
</div>
</div>
</div>
PoC: filename (value)
<tr id="sfile0" url="/" filename="<EMBED SRC=" data:image"="">
<td class="fileName">
<a href="http://192.168.2.106:8080/%3CEMBED%20SRC="; data:image"=""><img
class="fileIcon"
src="_device%20folder&path-issue-2_files/FolderIcon.png" alt="*">
<embed
src="data:image%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%09%09%09%09%3C/
a%3E%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%09%09%09%3C/td%3E%0A%20%20%20%20
%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%09%09%09%3Ctd%20class="
filelastmod"="">Mon, 02 Dec 2013 15:50:10 GMT</a></td>
<td class="fileSize" align="right">--
<img style="display:none;" class="downloadIcon"
src="_device%20folder&path-issue-2_files/downloadIcon.png"
alt="d" onclick="downloadFile('/<EMBED SRC=" data:image');"="">
<img class="deleteIcon"
src="_device%20folder&path-issue-2_files/deleteIcon.png" alt="x"
title="Delete this file" onclick="deleteFile('#sfile0');" ="cursor:pointer;"="">
</td>
</tr>
<tr id="sfile1" url="/" filename="[FILE INCLUDE WEB VULNERABILITY!]%22">
<td class="fileName">
<a href="http://192.168.2.106:8080/%3E"; <[FILE INCLUDE WEB
VULNERABILITY!]%22"><img class="fileIcon"
src="_device%20folder&path-issue-2_files/FolderIcon.png" alt="*">
>"<[FILE INCLUDE WEB
>VULNERABILITY!]="_device%20folder&path-issue-2_files/a.htm" <="" a="">
</td>
1.2
The local command inject web vulnerability can be exploited by remote attackers
with low privileged or restricted iOS device user account
and no user interaction. For security demonstration or to reproduce the
vulnerability follow the provided information and steps below.
PoC: devicename
<div id="headerHighlight">
<div id="header">
<div class="logo">
<img src="device%20name__files/icon57.png"
alt="icon57" height="57" width="57">
<h1>iFiles</h1>
</div>
<div class="deviceName">
<h4>d4vice><..[COMMAND/PATH INJECT
VULNERABILITY!] </h4>
</div>
<div class="urlDiv">
<div class="outer">
<div class="inner">
<b>/</b>
</div>
</div>
</div>
</div>
</div>
Solution - Fix & Patch:
=======================
1.1
The file include vulnerability and arbitrary file upload vulnerability can be
patched by a secure parse and encode of the vulnerable
filename and foldername values.
Encode also the vulnerable path sub category file dir listing and the index
file dir listing. Recognize the path value.
1.2
To patch the local command inject web vulnerability it is required to encode
the deviename value in the index and sub category sites
to prevent injects or requests.
Security Risk:
==============
1.1
The security risk of the file include and arbitrary file upload (restricted
upload bypass) web vulnerability is estimated as critical.
1.2
The security risk of the local command/path inject web vulnerability is
estimated as high(-).
Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri
(bkm@xxxxxxxxxxxxxxxxx) [www.vulnerability-lab.com]
Disclaimer & Information:
=========================
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