CVE-2022-23488 BigBlueButton vulnerable to Insertion of Sensitive Information Into Sent Data

Medium 6.5 Published 17 Dec 2022 Updated 17 Apr 2025

Attackers can view viewers' webcams despite moderator-only lock settings due to missing backend authorization checks in BigBlueButton.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2022-23488?

CVE-2022-23488 is a medium-severity missing authorization vulnerability in bigbluebutton, published on 17 Dec 2022. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6 are vulnerable to Insertion of Sensitive Information Into Sent Data. The moderators-only webcams lock setting is not enforced on the backend, which allows an attacker to subscribe to viewers' webcams, even when the lock setting is applied. (The required streamId was being sent to all users even with lock setting applied). This issue is fixed in version 2.4-rc-6. There are no workarounds.

Weakness: CWE-863, CWE-201, CWE-200

Which versions are affected by CVE-2022-23488?

It affects 1 product.

Products include Bigbluebutton Bigbluebutton.

How do I fix CVE-2022-23488?

No fix has been published for CVE-2022-23488 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2022-23488 being exploited?

There is no known exploitation of CVE-2022-23488 in the wild and no public exploit code.

Sources

Also known as GHSA-j5g3-f74q-rvfq.