7.5
CVSSv3

CVE-2021-34415

Published: 27/09/2021 Updated: 12/07/2022
CVSS v2 Base Score: 7.8 | Impact Score: 6.9 | Exploitability Score: 10
CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9
VMScore: 694
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Vulnerability Summary

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.

Vulnerability Trend

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zoom meeting connector

Recent Articles

America, when you're done hitting us with the ban hammer, see these on-prem Zoom vulns, says Positive
The Register • Gareth Corfield • 15 Nov 2021

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US-sanctioned Positive Technologies has pointed out three vulnerabilities in Zoom that can be exploited to crash or hijack on-prem instances of the videoconferencing system. One of the trio of bugs is an input validation flaw, which can be abused by a malicious Zoom portal administrator to inject and execute arbitrary commands on the machine hosting the software. We imagine a scenario in which someone in, say, HR is made an admin of the company Zoom installation, and their work PC is hijacked by...