Description
BigBlueButton is an open-source virtual classroom. A Denial of Service (DoS) vulnerability in versions prior to 3.0.13 allows any authenticated user to freeze or crash the entire server by abusing the polling feature's `Choices` response type. By submitting a malicious payload with a massive array in the `answerIds` field, the attacker can cause the current meeting — and potentially all meetings on the server — to become unresponsive. Version 3.0.13 contains a patch. No known workarounds are available.
Problem types
CWE-703: Improper Check or Handling of Exceptional Conditions
Product status
References
github.com/...button/security/advisories/GHSA-73j3-v3fq-fqx5
github.com/bigbluebutton/bigbluebutton/pull/23662
www.youtube.com/watch?v=BwROSVIYjOY
