exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

PDF Converter And File Editor 2.1 Local File Inclusion

PDF Converter And File Editor 2.1 Local File Inclusion
Posted May 7, 2015
Authored by Benjamin Kunz Mejri, Vulnerability Laboratory | Site vulnerability-lab.com

PDF Converter and File Editor version 2.1 suffers from a local file inclusion vulnerability.

tags | exploit, local, file inclusion
SHA-256 | d4803b251347401ae6c2425b77c15232e43078278304e16a1fe2dcd08f5fc5a7

PDF Converter And File Editor 2.1 Local File Inclusion

Change Mirror Download
Document Title:
===============
PDF Converter & Editor 2.1 iOS - File Include Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1480


Release Date:
=============
2015-05-06


Vulnerability Laboratory ID (VL-ID):
====================================
1480


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


Product & Service Introduction:
===============================
Text Editor & PDF Creator is your all-in-one document management solution for iPhone, iPod touch and iPad.
It can catch documents from PC or Mac via USB cable or WIFI, email attachments, Dropbox and box and save
it on your iPhone, iPod Touch or iPad locally.

(Copy of the Vendor Homepage: https://itunes.apple.com/it/app/text-editor-pdf-creator/id639156936 )


Abstract Advisory Information:
==============================
The Vulnerability Laboratory Core Research Team discovered file include web vulnerability in the official AppzCreative - PDF Converter & Text Editor v2.1 iOS mobile web-application.


Vulnerability Disclosure Timeline:
==================================
2015-05-06: Public Disclosure (Vulnerability Laboratory)


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


Affected Product(s):
====================
AppzCreative Ltd
Product: PDF Converter & Text Editor - iOS Web Application (Wifi) 2.1


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


Severity Level:
===============
High


Technical Details & Description:
================================
A local file include web vulnerability has been discovered in the official AppzCreative - PDF Converter & Text Editor v2.1 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 mobile web-application.

The web vulnerability is located in the `filename` value of the `submit upload` module. Remote attackers are able to inject own files with malicious
`filename` values in the `file upload` POST method request to compromise the mobile web-application. The local file/path include execution occcurs in
the index file dir listing of the wifi interface. The attacker is able to inject the local file include request by usage of the `wifi interface`
in connection with the vulnerable file upload POST method request.

Remote attackers are also able to exploit the filename issue in combination with persistent injected script codes to execute different malicious
attack requests. The attack vector is located on the application-side of the wifi service and the request method to inject is POST.

The security risk of the local file include vulnerability is estimated as high with a cvss (common vulnerability scoring system) count of 6.9.
Exploitation of the local file include web vulnerability requires no user interaction or privileged web-application user account.
Successful exploitation of the local file include vulnerability results in mobile application compromise or connected device component compromise.

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

Vulnerable Module(s):
[+] Submit (Upload)

Vulnerable Parameter(s):
[+] filename

Affected Module(s):
[+] Index File Dir Listing (http://localhost:52437/)


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

Manual steps to reproduce the vulnerability ...
1. Install the software to your iOS device
2. Start the mobile ios software and activate the web-server
3. Open the wifi interface for file transfers
4. Start a session tamper and upload a random fil
5. Change in the live tamper by interception of the vulnerable value the filename input (lfi payload)
6. Save the input by processing to continue the request
7. The code executes in the main file dir index list of the local web-server (localhost:52437)
8. Open the link with the private folder and attach the file for successful exploitation with the path value
9. Successful reproduce of the vulnerability!


PoC: Upload File (http://localhost:52437/Box/)
<div id="module_main"><bq>Files</bq><p><a href="..">..</a><br>
<a href="<iframe>2.png"><../[LOCAL FILE INCLUDE VULNERABILITY IN FILENAME!]>2.png</a> ( 0.5 Kb, 2015-04-30 10:58:46 +0000)<br />
</p><form action="" method="post" enctype="multipart/form-data" name="form1" id="form1"><label>upload file<input type="file" name="file" id="file" /></label><label><input type="submit" name="button" id="button" value="Submit" /></label></form></div></center></body></html></iframe></a></p></div>

--- PoC Session Logs [POST] (LFI - Filename) ---
Status: 200[OK]
POST http://localhost:52437/Box/
Load Flags[LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ] Größe des Inhalts[3262] Mime Type[application/x-unknown-content-type]
Request Header:
Host[localhost:52437]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:37.0) Gecko/20100101 Firefox/37.0]
Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
Accept-Language[de,en-US;q=0.7,en;q=0.3]
Accept-Encoding[gzip, deflate]
Referer[http://localhost:52437/Box/]
Connection[keep-alive]
POST-Daten:
POST_DATA[-----------------------------321711425710317
Content-Disposition: form-data; name="file"; filename="../[LOCAL FILE INCLUDE VULNERABILITY IN FILENAME!]>2.png"
Content-Type: image/png

Reference(s):
http://localhost:52437/
http://localhost:52437/Box/


Solution - Fix & Patch:
=======================
The vulnerability can be patched by a secure validation of the filename value in the upload POST method request. Restrict the filename input and
disallow special chars. Ensure that not multiple file extensions are loaded in the filename value to prevent arbitrary file upload attacks.
Encode the output in the file dir index list with the vulnerable name value to prevent application-side script code injection attacks.


Security Risk:
==============
The security rsik of the local file include web vulnerability in the filename value of the wifi service is estimated as high. (CVSS 6.9)


Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (bkm@evolution-sec.com) [www.vulnerability-lab.com]


Disclaimer & Information:
=========================
The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed
or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable
in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab
or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for
consequential or incidental damages so the foregoing limitation may not apply. We do not approve or encourage anybody to break any vendor licenses,
policies, deface websites, hack into databases or trade with fraud/stolen material.

Domains: www.vulnerability-lab.com - www.vuln-lab.com - www.evolution-sec.com
Contact: admin@vulnerability-lab.com - research@vulnerability-lab.com - admin@evolution-sec.com
Section: magazine.vulnerability-db.com - vulnerability-lab.com/contact.php - evolution-sec.com/contact
Social: twitter.com/#!/vuln_lab - facebook.com/VulnerabilityLab - youtube.com/user/vulnerability0lab
Feeds: vulnerability-lab.com/rss/rss.php - vulnerability-lab.com/rss/rss_upcoming.php - vulnerability-lab.com/rss/rss_news.php
Programs: vulnerability-lab.com/submit.php - vulnerability-lab.com/list-of-bug-bounty-programs.php - vulnerability-lab.com/register/

Any modified copy or reproduction, including partially usages, of this file requires authorization from Vulnerability Laboratory. Permission to
electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of other media, are reserved by
Vulnerability-Lab Research Team or its suppliers. All pictures, texts, advisories, source code, videos and other information on this website
is trademark of vulnerability-lab team & the specific authors or managers. To record, list (feed), modify, use or edit our material contact
(admin@vulnerability-lab.com or research@vulnerability-lab.com) to get a permission.

Copyright © 2015 | Vulnerability Laboratory - [Evolution Security GmbH]™



--
VULNERABILITY LABORATORY - RESEARCH TEAM
SERVICE: www.vulnerability-lab.com
CONTACT: research@vulnerability-lab.com
PGP KEY: http://www.vulnerability-lab.com/keys/admin@vulnerability-lab.com%280x198E9928%29.txt

Login or Register to add favorites

File Archive:

March 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Mar 1st
    16 Files
  • 2
    Mar 2nd
    0 Files
  • 3
    Mar 3rd
    0 Files
  • 4
    Mar 4th
    32 Files
  • 5
    Mar 5th
    28 Files
  • 6
    Mar 6th
    42 Files
  • 7
    Mar 7th
    17 Files
  • 8
    Mar 8th
    13 Files
  • 9
    Mar 9th
    0 Files
  • 10
    Mar 10th
    0 Files
  • 11
    Mar 11th
    15 Files
  • 12
    Mar 12th
    19 Files
  • 13
    Mar 13th
    21 Files
  • 14
    Mar 14th
    38 Files
  • 15
    Mar 15th
    15 Files
  • 16
    Mar 16th
    0 Files
  • 17
    Mar 17th
    0 Files
  • 18
    Mar 18th
    10 Files
  • 19
    Mar 19th
    32 Files
  • 20
    Mar 20th
    46 Files
  • 21
    Mar 21st
    16 Files
  • 22
    Mar 22nd
    13 Files
  • 23
    Mar 23rd
    0 Files
  • 24
    Mar 24th
    0 Files
  • 25
    Mar 25th
    12 Files
  • 26
    Mar 26th
    31 Files
  • 27
    Mar 27th
    19 Files
  • 28
    Mar 28th
    42 Files
  • 29
    Mar 29th
    0 Files
  • 30
    Mar 30th
    0 Files
  • 31
    Mar 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close