CVE-2022-28749 Insufficient Authorization Check During Meeting Join

Medium 6.5 Published Updated

An attacker in the waiting room can join a Zoom meeting without host consent due to insufficient authorization checks in the On-Premise Meeting Connector.

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-2022-28749?

CVE-2022-28749 is a medium-severity missing authorization vulnerability in Zoom Video Communications Inc On-Premise Meeting Connectors, published on 15 Jun 2022. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Zooms On-Premise Meeting Connector MMR before version 4.8.113.20220526 fails to properly check the permissions of a Zoom meeting attendee. As a result, a threat actor in the Zooms waiting room can join the meeting without the consent of the host.

Which versions are affected by CVE-2022-28749?

It affects 1 product.

Products include Zoom On-Premise Meeting Connector Multimedia Router.

How do I fix CVE-2022-28749?

No fix has been published for CVE-2022-28749 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-2022-28749 being exploited?

There is no known exploitation of CVE-2022-28749 in the wild and no public exploit code.

Sources

Also known as GHSA-hf5f-6q2f-wm25.

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