Dec 30, 2020

Explanation of Issue

Well i was testing each and every feature of Live in Facebook for iOS,sadly i didn’t get any bugs there, and I created an Event from my Page and Started LiveStream there. An unknown person comments there, so i wanted to block that person because that was my test page. Surprisingly once i clicked on Block, that person was not blocked properly and still able to comment there. I test this issue for Personal Event and Group Event LiveStream then this issue was also present there.

Proof of Concept

Message From Facebook Security Team

Timeline of Report

July 6, 2020: Initial Report Sent

July 9, 2020: Pre-Triaged

July 14, 2020: Triaged

July 30, 2020: Confirmation of Fix

August 27, 2020: Closed as Informative

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Tags: bugbounty Infosec Writeup FacebookBug FacebookBugBounty Facebook

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