ifixit Bug Bounty #6 -(Profile) Persistent Vulnerability

[Vulnerability Lab <research@xxxxxxxxxxxxxxxxxxxxx>]

Document Title:
===============
ifixit Bug Bounty #6 -(Profile) Persistent Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1701

Video: http://www.vulnerability-lab.com/get_content.php?id=1702


Release Date:
=============
2016-02-18


Vulnerability Laboratory ID (VL-ID):
====================================
1701


Common Vulnerability Scoring System:
====================================
3.6


Product & Service Introduction:
===============================
The free repair guide for everything, written by everyone. iFixit is a private 
company in San Luis Obispo, California. Founded in 2003 while the 
founders were attending Cal Poly, the company sells repair parts and publishes 
free wiki-like online repair guides for consumer electronics and gadgets on its 
web site.

(Copy of the Vendor Homepage: https://www.ifixit.com/ )


Abstract Advisory Information:
==============================
The Vulnerability Laboratory Core Research Team discovered an application-side 
input validation web vulnerability in the official ifixit online service 
web-application.


Vulnerability Disclosure Timeline:
==================================
2015-12-25: Researcher Notification & Coordination (Hadji Samir)
2015-12-26: Vendor Notification (iFixIt Security Team)
2016-01-06: Vendor Response/Feedback (iFixIt Security Team)
2016-02-05: Vendor Fix/Patch  (iFixIt Developer Team)
2016-02-16: Security Acknowledgements (iFixIt Security Team)
2016-02-18: Public Disclosure (Vulnerability Laboratory)


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


Affected Product(s):
====================
iFixit
Product: iFixit PRO - Online Service (Web-Application) 2016 Q1


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


Severity Level:
===============
Medium


Technical Details & Description:
================================
A persistent input validation web vulnerability has been discovered in the 
official ifixit online service web-application.
The vulnerability allows remote attackers to inject own malicious script codes 
to the application-side of the affected modules context.

The vulnerability is located in the additional information input field of the 
`my profile > about me` web-application module. Remote attackers with low 
privileged web-application user accounts are able to inject own script codes to 
the application-side of the vulnerable modules context. The attack vector 
is located on the application-side and the request method to inject is POST.

The security risk of the filter bypass and persistent validation vulnerability 
is estimated as medium with a cvss (common vulnerability scoring system) count 
of 3.6. 
Exploitation of the persistent input validation web vulnerability requires a 
low privileged web-application user account and low or medium user interaction. 
Successful exploitation of the vulnerability results in session hijacking, 
persistent phishing, persistent external redirects to malicious source and 
persistent 
manipulation of affected or connected application modules.


Request Method(s):
                                [+] POST

Vulnerable Module(s):
                                [+] my profile > about me

Vulnerable Input(s):
                                [+] additional information

Affected Module(s):
                                [+] my profile


Proof of Concept (PoC):
=======================
The vulnerability can be exploited by remote attackers with low privileged 
web-application user account and low user interaction.
For security demonstration or to reproduce the vulnerability follow the 
provided information and steps below to continue.

Manual steps to reproduce the vulnerability ...
1. Open my profile > About me >  Additional Information
2. Write in the Additional Information input field your own script code payload
3. Save the entry
4. revisit the my profile page
5. Successful reproduce of the vulnerability!

PoC:
[image|100|caption=<click here >|link=javascript:alert(document.cookie)]


Security Risk:
==============
The security risk of the persistent input validation web vulnerability in the 
my profile section of the application is estimated as medium. (CVSS 3.6)


Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Hadji Samir 
(samir@xxxxxxxxxxxxxxxxx)  
[http://www.vulnerability-lab.com/show.php?user=Hadji%20Samir]


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