CVE-2022-29236

Improper access control for pencil annotations in BigBlueButton

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.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.10%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: bigbluebutton bigbluebutton
Published at:
Updated at:

References

Link Tags
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-p93g-r9gm-9v6r third party advisory patch
https://github.com/bigbluebutton/bigbluebutton/pull/13803 third party advisory patch
https://github.com/bigbluebutton/bigbluebutton/pull/14265 third party advisory patch
https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.3.18 third party advisory release notes
https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6 third party advisory release notes

Frequently Asked Questions

What is the severity of CVE-2022-29236?
CVE-2022-29236 has been scored as a medium severity vulnerability.
How to fix CVE-2022-29236?
To fix CVE-2022-29236, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-29236 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-29236 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-29236?
CVE-2022-29236 affects bigbluebutton bigbluebutton.
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