CVE-2021-34423

Buffer overflow in Zoom client and other products

State: Published
Severity: 7.3 High
Published: Nov 24, 2021
Updated: Sep 17, 2024
Reserved: Jun 9, 2021

Description

A buffer overflow vulnerability was discovered in Zoom Client for Meetings (for Android, iOS, Linux, macOS, and Windows) before version 5.8.4, Zoom Client for Meetings for Blackberry (for Android and iOS) before version 5.8.1, Zoom Client for Meetings for intune (for Android and iOS) before version 5.8.4, Zoom Client for Meetings for Chrome OS before version 5.0.1, Zoom Rooms for Conference Room (for Android, AndroidBali, macOS, and Windows) before version 5.8.3, Controllers for Zoom Rooms (for Android, iOS, and Windows) before version 5.8.3, Zoom VDI Windows Meeting Client before version 5.8.4, Zoom VDI Azure Virtual Desktop Plugins (for Windows x86 or x64, IGEL x64, Ubuntu x64, HP ThinPro OS x64) before version 5.8.4.21112, Zoom VDI Citrix Plugins (for Windows x86 or x64, Mac Universal Installer & Uninstaller, IGEL x64, eLux RP6 x64, HP ThinPro OS x64, Ubuntu x64, CentOS x 64, Dell ThinOS) before version 5.8.4.21112, Zoom VDI VMware Plugins (for Windows x86 or x64, Mac Universal Installer & Uninstaller, IGEL x64, eLux RP6 x64, HP ThinPro OS x64, Ubuntu x64, CentOS x 64, Dell ThinOS) before version 5.8.4.21112, Zoom Meeting SDK for Android before version 5.7.6.1922, Zoom Meeting SDK for iOS before version 5.7.6.1082, Zoom Meeting SDK for macOS before version 5.7.6.1340, Zoom Meeting SDK for Windows before version 5.7.6.1081, Zoom Video SDK (for Android, iOS, macOS, and Windows) before version 1.1.2, Zoom On-Premise Meeting Connector Controller before version 4.8.12.20211115, Zoom On-Premise Meeting Connector MMR before version 4.8.12.20211115, Zoom On-Premise Recording Connector before version 5.1.0.65.20211116, Zoom On-Premise Virtual Room Connector before version 4.4.7266.20211117, Zoom On-Premise Virtual Room Connector Load Balancer before version 2.5.5692.20211117, Zoom Hybrid Zproxy before version 1.0.1058.20211116, and Zoom Hybrid MMR before version 4.6.20211116.131_x86-64. This can potentially allow a malicious actor to crash the service or application, or leverage this vulnerability to execute arbitrary code.

Scores

CVSS	Score	Vector	Source
3.0	7.3 High	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L	Zoom

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
Zoom Client for Meetings (for Android, iOS, Linux, macOS, and Windows)Zoom Video Communications Inc	before 5.8.4Affected
Zoom Client for Meetings for Blackberry (for Android and iOS)Zoom Video Communications Inc	before 5.8.1Affected
Zoom Client for Meetings for intune (for Android and iOS)Zoom Video Communications Inc	before 5.8.4Affected
Zoom Client for Meetings for Chrome OSZoom Video Communications Inc	before 5.0.1Affected
Zoom Rooms for Conference Room (for Android, AndroidBali, macOS, and Windows)Zoom Video Communications Inc	before 5.8.3Affected
Controllers for Zoom Rooms (for Android, iOS, and Windows)Zoom Video Communications Inc	before 5.8.3Affected
Zoom VDI Windows Meeting ClientZoom Video Communications Inc	before 5.8.4Affected
Zoom VDI Azure Virtual Desktop Plugins (for Windows x86 or x64, IGEL x64, Ubuntu x64, HP ThinPro OS x64)Zoom Video Communications Inc	before 5.8.4.21112Affected
Zoom VDI Citrix Plugins (for Windows x86 or x64, Mac Universal Installer & Uninstaller, IGEL x64, eLux RP6 x64, HP ThinPro OS x64, Ubuntu x64, CentOS x 64, Dell ThinOS)Zoom Video Communications Inc	before 5.8.4.21112Affected
Zoom VDI VMware Plugins (for Windows x86 or x64, Mac Universal Installer & Uninstaller, IGEL x64, eLux RP6 x64, HP ThinPro OS x64, Ubuntu x64, CentOS x 64, Dell ThinOS)Zoom Video Communications Inc	before 5.8.4.21112Affected
Zoom Meeting SDK for AndroidZoom Video Communications Inc	before 5.7.6.1922Affected
Zoom Meeting SDK for iOSZoom Video Communications Inc	before 5.7.6.1082Affected
Zoom Meeting SDK for macOSZoom Video Communications Inc	before 5.7.6.1340Affected
Zoom Meeting SDK for WindowsZoom Video Communications Inc	before 5.7.6.1081Affected
Zoom Video SDK (for Android, iOS, macOS, and Windows)Zoom Video Communications Inc	before 1.1.2Affected
Zoom On-Premise Meeting Connector ControllerZoom Video Communications Inc	before 4.8.12.20211115Affected
Zoom On-Premise Meeting Connector MMRZoom Video Communications Inc	before 4.8.12.20211115Affected
Zoom On-Premise Recording ConnectorZoom Video Communications Inc	before 5.1.0.65.20211116Affected
Zoom On-Premise Virtual Room ConnectorZoom Video Communications Inc	before 4.4.7266.20211117Affected
Zoom On-Premise Virtual Room Connector Load BalancerZoom Video Communications Inc	before 2.5.5692.20211117Affected
Zoom Hybrid ZproxyZoom Video Communications Inc	before 1.0.1058.20211116Affected
Zoom Hybrid MMRZoom Video Communications Inc	before 4.6.20211116.131_x86-64Affected

References

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