[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Vanctech File Commander 1.1 iOS - Multiple Vulnerabilities
- To: bugtraq@xxxxxxxxxxxxxxxxx, bugs@xxxxxxxxxxxxxxxxxxx
- Subject: Vanctech File Commander 1.1 iOS - Multiple Vulnerabilities
- From: Vulnerability Lab <research@xxxxxxxxxxxxxxxxxxxxx>
- Date: Mon, 31 Mar 2014 12:10:35 +0200
Document Title:
===============
Vanctech File Commander 1.1 iOS - Multiple Vulnerabilities
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1235
Release Date:
=============
2014-03-28
Vulnerability Laboratory ID (VL-ID):
====================================
1235
Common Vulnerability Scoring System:
====================================
7.3
Product & Service Introduction:
===============================
This is an app which can change the way you use your iphone/itouch. With this
app , when you try to read a document or listen to music
or even you want to watch some video,You don`t have to change the apps round by
round.You can deal with them in one app with simple operation.
And we can even provide the wifi share, you can share the files whatever you
like with you friends or your PC/MAC. And of course you can send
the files in your PC/MAC to your iphone/itouch. You can enjoy your files
without change pages anywhere anytime you want.
(Copy of the Homepage:
https://itunes.apple.com/de/app/file-commander/id484450911 )
Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered multiple high severity
vulnerabilities in the official Vanctech File Commander v1.1 iOS mobile
web-application.
Vulnerability Disclosure Timeline:
==================================
2014-03-28: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Affected Product(s):
====================
Shanghai Fan Cheng Software Ltd
Product: File Commander - iOS Mobile Web Application 1.1
Exploitation Technique:
=======================
Remote
Severity Level:
===============
High
Technical Details & Description:
================================
1.1
A local file include web vulnerability has been discovered in the official
Vanctech File Commander v1.1 iOS mobile web-application.
A 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 `filename` value of the `upload` module
POST methdo request. Remote attackers are able to inject own
files with a malicious `filename` value in the upload POST method request to
compromise the mobile web-application. The attack vector is on
the application-side and the request method to inject is POST. The local
file/path include execution occcurs in the index file commander
dir listing. The security risk of the local file include web vulnerability is
estimated as high(+) with a cvss (common vulnerability scoring
system) count of 7.4(+)|(-)7.5.
Exploitation of the local file include web vulnerability requires no user
interaction or a privileged mobile web-application user account.
Successful exploitation of the local file include web vulnerability results in
mobile application or connected device component compromise.
Request Method(s):
[+] [POST]
Vulnerable Module(s):
[+] Select File > Upload
Vulnerable Parameter(s):
[+] filename
Affected Module(s):
[+] Index File Dir List (http://localhost:8080/)
1.2
An arbitrary file upload web vulnerability has been discovered in the official
Vanctech File Commander v1.1 iOS mobile web-application.
The arbitrary file upload issue allows remote attackers to upload files with
multiple extensions to bypass the web-server or system validation.
The vulnerability is located in the `select file` function of the upload
resource module. Remote attackers are able to upload a php or js web-shells
by renaming the file with multiple extensions to bypass the file restriction
mechanism. The attacker uploads for example a web-shell with the following
name and extension `ptest.png.html.php.js.aspx.png`. After the upload the
attacker needs to open the file with the path value in the web application.
He deletes the .png file extension and can access the application with elevated
executable access rights. The attack vector is on the application-side
of the vulnerable wifi interface service and the request method is POST. To
access the file the attacker needs to request the public `./Download` path.
There are two ways to include local files. The first is to sync with a local
user account at the affected device with the vulnerable software. The second
possibility is to access the wifi interface and upload (remote) the files in
the local or public network. The security risk of the arbitrary file upload
web vulnerability is estimated as high with a cvss (common vulnerability
scoring system) count of 7.1(+)|(-)7.2.
Exploitation of the arbitrary file upload web vulnerability requires no user
interaction or privileged 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):
[+] Select File > Upload
Vulnerable Parameter(s):
[+] filename (multiple extensions)
Affected Module(s):
[+] Downloads File Dir
(http://localhost:8080/files?x)
Proof of Concept (PoC):
=======================
1.1
The local file include web vulnerability can be exploited by local attackers
without privileged web-application user account or user interaction.
For security demonstration or to reproduce the local web vulnerability follow
the provided information and steps below to continue.
PoC:
http://localhost:8080/files?./[LOCAL FILE INCLUDE VULNERABILITY!]
http://localhost:8080/files/[UPLOAD PATH VALUE]/[LOCAL FILE INCLUDE
VULNERABILITY!]
--- PoC Session Logs [POST] ---
12:01:20.676[96ms][total 96ms] Status: 302[Found]
POST http://localhost:8080/files Load Flags[LOAD_DOCUMENT_URI
LOAD_INITIAL_DOCUMENT_URI ] Größe des Inhalts[67] Mime Type[text/html]
Request Header:
Host[localhost:8080]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:27.0) Gecko/20100101
Firefox/27.0]
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://localhost:8080/]
Connection[keep-alive]
POST-Daten:
POST_DATA[-----------------------------245932080324620
Content-Disposition: form-data; name="newfile"; filename="2.png"
Content-Type: image/png
Source: File Management - Index
<table style="background-image: url('border-1.png');"
border="0" cellpadding="0" cellspacing="0">
<tbody><tr><td height="1" width="5"> </td><td>
</td><td width="5"> </td></tr>
<tr><td> </td><td align="center">
<table style="background-image:
url('bg-1.png');" border="0" cellpadding="0" cellspacing="0" width="100%">
<thead>
<tr><th>Name</th><th>Size</th><th>Date Modified</th></tr>
</thead>
<tbody id="filelist">./[LOCAL
FILE INCLUDE VULNERABILITY VIA FILENAME VALUE!];
</tbody>
</table></td><td> </td></tr>
<tr><td height="1"> </td><td> </td><td>
</td></tr>
</tbody></table>
<table style="border-top:1px solid #ccc;" border="0"
cellpadding="0" cellspacing="0" width="100%">
<tbody><tr><td height="20" align="center">Powered by
Vanctech</td></tr></tbody></table></div>
PoC: Vulnerable Filöe Item List JScript
<script type="text/javascript" charset="utf-8">
var now = new Date();
$.getJSON("/files?"+ now.toString(),
function(data){
var shadow = false;
$.each(data, function(i,item){
var trclass='';
if (shadow)
trclass= " class='shadow'";
encodeName = encodeURI(item.name).replace("'", "'");
$("<tr" + trclass + "><td><a href='/files/" + encodeName + "'
class='file'>" + item.name + "</a></td> <td>" + item.size + "</td><td>" +
item.modDate + "</td></tr>").appendTo("#filelist");
shadow = !shadow;
});
});
</script>
Reference(s):
http://localhost:8080/files/
1.2
The arbitrary file upload web vulnerability can be exploited by remote
attackers without privileged application user account or user interaction.
For security demonstration or to reproduce the local web vulnerability follow
the provided information and steps below to continue.
PoC: Upload Path (Download)
http://localhost:8080/Download/test.jpg.html.php.asp.html.jpg
http://localhost:8080/Download/[ARBITRARY FILE UPLOAD VULNERABILITY!]
--- PoC Session Logs [POST] ---
12:02:44.901[543ms][total 543ms] Status: 302[Found]
POST http://localhost:8080/files Load Flags[LOAD_DOCUMENT_URI
LOAD_INITIAL_DOCUMENT_URI ] Größe des Inhalts[67] Mime Type[text/html]
Request Header:
Host[localhost:8080]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:27.0) Gecko/20100101
Firefox/27.0]
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://localhost:8080/]
Connection[keep-alive]
POST-Daten:
POST_DATA[-----------------------------36532693528160
Content-Disposition: form-data; name="newfile";
filename="test.jpg.html.php.asp.html.jpg[ARBITRARY FILE UPLOAD VULNERABILITY!]"
Content-Type: image/jpeg
Source: File Management - Downloads
<table style="background-image: url('border-1.png');"
border="0" cellpadding="0" cellspacing="0">
<tbody><tr><td height="1" width="5"> </td><td>
</td><td width="5"> </td></tr>
<tr><td> </td><td align="center">
<table style="background-image:
url('bg-1.png');" border="0" cellpadding="0" cellspacing="0" width="100%">
<thead>
<tr><th>Name</th><th>Size</th><th>Date Modified</th></tr>
</thead>
<tbody id="filelist">
[ARBITRARY FILE UPLOAD
VULNERABILITY!]</tbody>
</table></td><td> </td></tr>
<tr><td height="1"> </td><td> </td><td>
</td></tr>
</tbody></table>
<table style="border-top:1px solid #ccc;" border="0"
cellpadding="0" cellspacing="0" width="100%">
<tbody><tr><td height="20" align="center">Powered by
Vanctech</td></tr></tbody></table></div>
Reference(s):
http://localhost:8080/Download/
Solution - Fix & Patch:
=======================
1.1
The local file include web vulnerability can be patched by a secure parse and
encode of the vulnerable filename value in the upload file POST method request.
Filter and encode also the filename output in the index js item script to
prevent injection or code execution attacks in the name context listing.
1.2
Filter and restrict the file name validation on uploads to prevent arbitrary
file upload attacks. Implement a secure own exception-handling to restrict
and disallow files with multiple extensions. Reset the executable rights for
html and php codes in the little web-server settings config for /files.
Security Risk:
==============
1.1
The security risk of the local file include web vulnerability in the file
commander interface is estimated as high.
1.2
The security risk of the arbitrary file upload web vulnerability in the file
commander interface is estimated as high(+).
Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri
(bkm@xxxxxxxxxxxxxxxxx) [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@xxxxxxxxxxxxxxxxxxxxx -
research@xxxxxxxxxxxxxxxxxxxxx - admin@xxxxxxxxxxxxxxxxx
Section: www.vulnerability-lab.com/dev - forum.vulnerability-db.com
- magazine.vulnerability-db.com
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
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@xxxxxxxxxxxxxxxxxxxxx or
research@xxxxxxxxxxxxxxxxxxxxx) to get a permission.
Copyright © 2014 | Vulnerability Laboratory
[Evolution Security]
--
VULNERABILITY LABORATORY RESEARCH TEAM
DOMAIN: www.vulnerability-lab.com
CONTACT: research@xxxxxxxxxxxxxxxxxxxxx