Wednesday, October 21, 2020

BigBlueButton 2.2.25 File Disclosure / Server-Side Request Forgery

RedTeam Pentesting discovered a vulnerability in the BigBlueButton web conferencing system version 2.2.25 that allows participants of a conference with permissions to upload presentations to read arbitrary files from the file system and perform server-side requests. This leads to administrative access to the BigBlueButton instance.
BigBlueButton 2.2.25 File Disclosure / Server-Side Request Forgery
 

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thank you Templateism for the design - You should have written the code a little more complicated - Nothing Encrypted anymore