Document Title:
===============
Facebook - Instagram Business Access Token Demo PoC


Date:
=====
2018-10-01


References:
===========
https://www.vulnerability-lab.com/get_content.php?id=2153

View: https://www.youtube.com/watch?v=4Obsd1Qw7uU

News & Press:
https://www.forbes.com/sites/richardwindsoreurope/2018/09/28/facebook-hack-shows-yet-another-facebook-move-fast-service-that-broke/#3569ddb17ed3
https://www.stern.de/panorama/weltgeschehen/news--facebook-muss-sicherheitsluecke-bei-50-millionen-konten-zugeben-8379228.html
https://www.heise.de/newsticker/meldung/Fast-50-Millionen-Facebook-Nutzer-von-Hacker-Angriff-betroffen-4178529.html
https://www.welt.de/wirtschaft/article181706120/Soziales-Netzwerk-Hacker-greifen-50-Millionen-Facebook-Nutzerkonten-an.html
https://www.merkur.de/wirtschaft/sicherheitsluecke-bei-facebook-50-millionen-nutzer-betroffen-zr-10284362.html
https://winfuture.de/news,105295.html
http://www.faz.net/aktuell/feuilleton/aus-dem-maschinenraum/facebook-hat-eine-gravierende-sicherheitsluecke-15814748.html



VL-ID:
=====
2153


Common Vulnerability Scoring System:
====================================
9.3


Vulnerability Class:
====================
Privilege Escalation


Report-Timeline:
================
2018-10-03: Public Disclosure (Vulnerability Laboratory)


Status:
========
Published


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


Severity:
=========
Critical


Details:
========
The video shows the first reporting researcher lawrence amer on a reproduce of the vulnerability in january.
The vulnerability was identified by Lawrence amer in a sub-function of the Facebook core services. Subsequently, vulnerability 
reporting by benjamin kunz mejri and lawrence amerikan was prepared for submission to the Facebook Whitehat program in 2017 Q3. 
Several times reported in 2017 Q3 & 2017 Q4 by the core Vulnerbaility Lab team. After several discussions, Facebook technicians 
were unable to understand the impact of the vulnerability, reliably assess the risks, and reproduce the vulnerabilities themselves. 
The reason was that there was a communication with Facebook that mainly excluded the agreement of facts from all parties involved. 
That's why they refused to pay our researchers a bug bounty. Then some international criminals probably found the same security 
problem and put over 50 million access token credentials at risk.


Credits:
========
Lawrence Amer [research@vulnerability-lab.com] - https://www.vulnerability-lab.com/show.php?user=Lawrence+Amer


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===========
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