CVE-2021-34415 Denial of service in Zoom On-Premise Meeting Connector Controller
Attackers can crash the Zoom On-Premise Meeting Connector Controller by sending packets with unverified count fields, causing resource exhaustion.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-34415?
CVE-2021-34415 is a high-severity denial of service vulnerability in Zoom On-Premise Meeting Connector Controller, published on 27 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Zone Controller service in the Zoom On-Premise Meeting Connector Controller before version 4.6.358.20210205 does not verify the cnt field sent in incoming network packets, which leads to exhaustion of resources and system crash.
Weakness: CWE-770
Which versions are affected by CVE-2021-34415?
It affects 1 product.
Products include Zoom Meeting Connector.
How do I fix CVE-2021-34415?
No fix has been published for CVE-2021-34415 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-34415 being exploited?
There is no known exploitation of CVE-2021-34415 in the wild and no public exploit code.
Other vulnerabilities in Zoom On-Premise Meeting Connector Controller
- CVE-2021-34416 Command injection in Zoom On-Premise Meeting Connector Controller, Zoom On-Premise Meeting Connector MMR, Zoom On-Premise Recording Connector, Zoom On-Premise Virtual Room Connector, Zoom On-Premise Virtual Room Connector Load Balancer
- CVE-2022-28750 Zoom On-Premise Deployments: Stack Buffer Overflow in Meeting Connector
- CVE-2021-34414 Command injection in Zoom on-premise Meeting Connector Controller, Zoom on-premise Meeting Connector MMR, Zoom on-premise Recording Connector, Zoom on-premise Virtual Room Connector, Zoom on-premise Virtual Room Connector Load Balancer
- CVE-2022-28753 Zoom On-Premise Deployments: Improper Access Control Vulnerability
- CVE-2022-28754 Zoom On-Premise Deployments: Improper Access Control Vulnerability
Sources
Also known as GHSA-736v-pj2q-r8qr.