Cyber Resilience

CVE-2021-34418

Medium

Published: 11 November 2021

Published
11 November 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 4.0 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS Score 0.0018 40.0th percentile
Risk Priority 8 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-34418 is a medium-severity NULL Pointer Dereference (CWE-476) vulnerability in Zoom Zoom On-Premise Meeting Connector Controller. Its CVSS base score is 4.0 (Medium).

Operationally, ranked at the 40.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

more

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.

CWE(s)
CWE-476

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

zoom
zoom on-premise meeting connector controller
≤ 4.6.239.20200613
zoom
zoom on-premise meeting connector mmr
≤ 4.6.239.20200613
zoom
zoom on-premise recording connector
≤ 3.8.42.20200905
zoom
zoom on-premise virtual room connector
≤ 4.4.6344.20200612
zoom
zoom on-premise virtual room connector load balancer
≤ 2.5.5492.20200616

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References