First published: Fri Dec 16 2022(Updated: )
BigBlueButton is an open source web conferencing system. Versions prior to 2.4.3 contain a whiteboard grace period that exists to handle delayed messages, but this grace period could be used by attackers to take actions in the few seconds after their access is revoked. The attacker must be a meeting participant. This issue is patched in version 2.4.3 an version 2.5-alpha-1
Credit: security-advisories@github.com
Affected Software | Affected Version | How to fix |
---|---|---|
Bigbluebutton Bigbluebutton | <2.4.3 |
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CVE-2022-41963 is a vulnerability in the BigBlueButton web conferencing system that allows attackers to take actions in the few seconds after their access is revoked.
CVE-2022-41963 has a severity level of low with a severity score of 3.1.
CVE-2022-41963 affects BigBlueButton versions prior to 2.4.3, allowing attackers to exploit the whiteboard grace period to take actions after their access is revoked.
To fix CVE-2022-41963, it is recommended to upgrade your BigBlueButton version to 2.4.3 or later.
You can find more information about CVE-2022-41963 at the following references: [GitHub Release](https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4.3), [GitHub Security Advisory](https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-v6p9-926c-6qfp).