CVE-2022-29236
Medium
Description
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.
SeverityMedium
CVSS4.3
Exploit probability59. percentile0.9%
ProductBigbluebutton
PublishedJun 2, 2022
First seenJun 2, 2022
Weakness typeCWE-285CWE-285
How to fix
Update
- bigbluebutton bigbluebutton2.3.18 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| bigbluebutton bigbluebutton | 2.2.0 ≤ v < 2.3.18, 2.4 | 2.3.18 |
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