medium4.3
CVE-2022-29236
BigBlueButton is an open source web conferencing system.
Impact
BigBlueButton is an open source web conferencing system. Starting in version 2.2 and prior to versions 2.3.18 and 2.4-rc-6, an attacker can circumvent access restrictions for drawing on the whiteboard. The permission check is inadvertently skipped on the server, due to a previously introduced grace period. The attacker must be a meeting participant. The problem has been patched in versions 2.3.18 and 2.4-rc-6. There are currently no known workarounds.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Bigbluebutton | Bigbluebutton | from 2.2.0 before 2.3.18 Version 2.4 |
Weakness classification
References
- NVD record
- CVE.org record
- https://github.com/bigbluebutton/bigbluebutton/pull/13803
- https://github.com/bigbluebutton/bigbluebutton/pull/14265
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.3.18
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6
- https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-p93g-r9gm-9v6r
- https://github.com/bigbluebutton/bigbluebutton/pull/13803
- https://github.com/bigbluebutton/bigbluebutton/pull/14265
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.3.18
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6
- https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-p93g-r9gm-9v6r