Threat Encyclopedia

Zoom.Products.CVE-2021-34423.Buffer.Overflow

description-logoDescription

This indicates an attack attempt to exploit a Buffer Overflow Vulnerability in Zoom Client and other products.
The vulnerability is due to an improper input validation error when handling an crafted request. A remote attacker can exploit the vulnerability by sending crafted requests to a vulnerable application. Successful exploitation can result in remote code execution in the context of the service.

affected-products-logoAffected Products

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
Zoom Hybrid MMR before version 4.6.20211116.131_x86-64

Impact logoImpact

System Compromise: Remote attackers can gain control of vulnerable systems.

recomended-action-logoRecommended Actions

Apply the most recent upgrade or patch from the vendor.
https://zoom.us/

CVE References

CVE-2021-34423

Other References

EXN-2022-0005

Telemetry logoTelemetry