CVE-2021-34418: medium-severity vulnerability in Zoom On-Premise Meeting Connector
Pre-auth Null pointer crash in on-premise web console
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4epss 0.6%
The login routine of the web console in the Zoom On-Premise Meeting Connector before version 4.6.239.20200613, Zoom On-Premise Meeting Connector MMR before version 4.6.239.20200613, Zoom On-Premise Recording Connector before version 3.8.42.20200905, Zoom On-Premise Virtual Room Connector before version 4.4.6344.20200612, and Zoom On-Premise Virtual Room Connector Load Balancer before version 2.5.5492.20200616 fails to validate that a NULL byte was sent while authenticating. This could lead to a crash of the login service.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected products
Zoom Video Communications Inc · Zoom On-Premise Meeting ConnectorZoom Video Communications Inc · Zoom On-Premise Meeting Connector MMRZoom Video Communications Inc · Zoom On-Premise Recording ConnectorZoom Video Communications Inc · Zoom On-Premise Virtual Room ConnectorZoom Video Communications Inc · Zoom On-Premise Virtual Room Connector Load BalancerRelated CVEs — Zoom On-Premise Meeting Connector
In the same product, most dangerous first.
CVE-2021-34423HIGHBuffer overflow in Zoom client and other productsEPSS 3.3%CVE-2021-34417HIGHAuthenticated remote command execution with root privileges via web console in MMREPSS 1.2%CVE-2022-22783MEDIUMProcess memory exposure in Zoom on-premise Meeting servicesEPSS 1.0%CVE-2022-28761MEDIUMZoom On-Premise Deployments: Improper Access ControlEPSS 0.8%CVE-2022-28758HIGHZoom On-Premise Deployments: Improper Access ControlEPSS 0.7%CVE-2022-28759HIGHZoom On-Premise Deployments: Improper Access ControlEPSS 0.7%