Vulnerabilities > CVE-2021-34424 - Out-of-bounds Read vulnerability in Zoom products

CVSS 7.5 - HIGH

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

HIGH

Integrity impact

NONE

Availability impact

NONE

network

low complexity

zoom

CWE-125

NVD

Published: 2021-11-24

Updated: 2024-11-21

Summary

A vulnerability was discovered in the 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 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 which potentially allowed for the exposure of the state of process memory. This issue could be used to potentially gain insight into arbitrary areas of the product's memory.

Vulnerable Configurations

Part	Description	Count
Application	Zoom Zoom Meetings - Zoom Meetings 4.6.8 Zoom Meetings 4.6.9 Zoom Meetings 4.6.10 Zoom Meetings 4.6.11 Zoom Meetings 4.6.12 Zoom Meetings 5.0.0 Zoom Meetings 5.0.1 Zoom Meetings 5.0.2 Zoom Meetings 5.0.3 Zoom Meetings 5.0.4 Zoom Meetings 5.0.5 Zoom Meetings 5.1.0 Zoom Meetings 5.1.1 Zoom Meetings 5.1.2 Zoom Meetings 5.1.3 Zoom Meetings 5.2.0 Zoom Meetings 5.2.1 Zoom Meetings 5.2.2 Zoom Meetings 5.2.3 Zoom Meetings 5.3.0 Zoom Meetings 5.3.1 Zoom Meetings 5.3.2 Zoom Meetings 5.4.0 Zoom Meetings 5.4.1 Zoom Meetings 5.4.2 Zoom Meetings 5.4.3 Zoom Meetings 5.4.4 Zoom Meetings 5.4.6 Zoom Meetings 5.4.7 Zoom Meetings 5.4.9 Zoom Meetings 5.5.0 Zoom Meetings 5.5.1 Zoom Meetings 5.5.2 Zoom Meetings 5.5.4 Zoom Meetings 5.5.5 Zoom Meetings 5.6.0 Zoom Meetings 5.6.1 Zoom Meetings 5.6.3 Zoom Meetings 5.6.4 Zoom Meetings 5.6.6 Zoom Meetings 5.6.7 Zoom Meetings 5.7.0 Zoom Meetings 5.7.1 Zoom Meetings 5.7.3 Zoom Meetings 5.7.4 Zoom Meetings 5.7.5 Zoom Meetings 5.7.6 Zoom Meetings 5.7.7 Zoom Meetings 5.7.8 Zoom Meetings 5.8.0 Zoom Meetings FOR Blackberry * Zoom Meetings FOR Intune * Zoom Meetings FOR Chrome OS * Zoom Rooms FOR Conference Rooms * Zoom Controllers FOR Zoom Rooms * Zoom Virtual Desktop Infrastructure 3.3.0 Zoom Virtual Desktop Infrastructure 3.3.1 Zoom Virtual Desktop Infrastructure 3.3.2 Zoom Virtual Desktop Infrastructure 3.3.3 Zoom Virtual Desktop Infrastructure 5.5.0 Zoom Virtual Desktop Infrastructure 5.5.3 Zoom Virtual Desktop Infrastructure 5.5.4 Zoom Virtual Desktop Infrastructure 5.5.6 Zoom Virtual Desktop Infrastructure 5.5.8 Zoom Virtual Desktop Infrastructure 5.5.9 Zoom Virtual Desktop Infrastructure 5.5.10 Zoom Virtual Desktop Infrastructure 5.7.0 Zoom Virtual Desktop Infrastructure 5.7.2 Zoom Virtual Desktop Infrastructure 5.7.5 Zoom Virtual Desktop Infrastructure 5.7.6 Zoom Virtual Desktop Infrastructure 5.7.8 Zoom Virtual Desktop Infrastructure 5.8.0 Zoom Windows Meeting SDK * Zoom Macos Meeting SDK * Zoom Iphone OS Meeting SDK * Zoom Android Meeting SDK * Zoom Windows Video SDK * Zoom Iphone OS Video SDK * Zoom Macos Video SDK * Zoom Android Video SDK * Zoom Hybrid MMR * Zoom Hybrid Zproxy * Zoom Zoom ON Premise Meeting Connector Controller - Zoom Zoom ON Premise Meeting Connector Controller 4.6.239.20200613 Zoom Zoom ON Premise Meeting Connector Controller 4.6.365.20210703 Zoom Zoom ON Premise Virtual Room Connector - Zoom Zoom ON Premise Virtual Room Connector 4.4.6344.20200612 Zoom Zoom ON Premise Virtual Room Connector 4.4.6868.20210703 Zoom Zoom ON Premise Recording Connector - Zoom Zoom ON Premise Recording Connector 3.8.42.20200905 Zoom Zoom ON Premise Recording Connector 3.8.45.20210703 Zoom Zoom ON Premise Virtual Room Connector Load Balancer - Zoom Zoom ON Premise Virtual Room Connector Load Balancer 2.5.5492.20200616 Zoom Zoom ON Premise Virtual Room Connector Load Balancer 2.5.5496.20210703 Zoom Zoom ON Premise Meeting Connector MMR - Zoom Zoom ON Premise Meeting Connector MMR 4.6.239.20200613 Zoom Zoom ON Premise Meeting Connector MMR 4.6.365.20210703 Zoom VDI Vmware * Zoom VDI Citrix * Zoom VDI Azure Virtual Desktop *	141
OS	Google Google Android -	1
OS	Apple Apple Macos - Apple Iphone OS -	2
OS	Linux Linux Linux Kernel -	1
OS	Microsoft Microsoft Windows -	1

Common Weakness Enumeration (CWE)

CWE-125 - Out-of-bounds Read

Common Attack Pattern Enumeration and Classification (CAPEC)

Overread Buffers
An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

References