CVE-2021-34424: Process memory exposure in Zoom Client and other products
First published: Wed Nov 24 2021(Updated: )
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.
Credit: security@zoom.us
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Zoom Cloud Meetings | <5.8.3 | |
| Android | ||
| Zoom Cloud Meetings | <5.8.4 | |
| Apple iOS and macOS | ||
| iStyle @cosme iPhone OS | ||
| Linux Kernel | ||
| Microsoft Windows | ||
| Zoom Meetings | <5.8.1 | |
| Zoom Meetings | <5.8.4 | |
| Zoom Meetings | <5.0.1 | |
| Zoom Rooms | <5.8.3 | |
| Zoom Rooms | <5.8.3 | |
| Oracle Virtual Desktop Infrastructure | <5.8.4 | |
| Zoom Meeting SDK | <5.7.6.1922 | |
| Zoom Meeting SDK | <5.7.6.1082 | |
| Zoom Meeting SDK | <5.7.6.1340 | |
| Zoom Meeting SDK | <5.7.6.1081 | |
| Zoom Video SDK | <1.1.2 | |
| Zoom Video SDK | <1.1.2 | |
| Zoom Video SDK for macOS | <1.1.2 | |
| Zoom Video SDK | <1.1.2 | |
| Zoom Hybrid MMR | <4.6.20211116.131 | |
| Zoom Hybrid Zproxy | <1.0.1058.20211116 | |
| Zoom Meeting Connector | <4.8.12.20211115 | |
| Zoom Meeting Connector | <4.8.12.20211115 | |
| Zoom Recording Connector | <5.1.0.65.20211116 | |
| Zoom Virtual Room Connector | <4.4.7266.20211117 | |
| Zoom Virtual Room Connector | <2.5.5692.20211117 | |
| Zoom Virtual Desktop Infrastructure | <5.8.4.21112 | |
| Zoom VDI | <5.8.4.21112 | |
| Zoom VDI | <5.8.4.21112 |
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Reference Links
Frequently Asked Questions
What is CVE-2021-34424?
CVE-2021-34424 is a vulnerability 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, and Zoom Rooms for Conference Rooms before version 5.8.3.
What is the severity of CVE-2021-34424?
CVE-2021-34424 has a severity score of 7.5 (high).
What software versions are affected by CVE-2021-34424?
CVE-2021-34424 affects Zoom Client for Meetings (before version 5.8.4), Zoom Client for Meetings for Blackberry (before version 5.8.1), Zoom Client for Meetings for Intune (before version 5.8.4), and Zoom Rooms for Conference Rooms (before version 5.8.3).
How can I fix CVE-2021-34424?
To fix CVE-2021-34424, update your Zoom Client for Meetings to version 5.8.4, Zoom Client for Meetings for Blackberry to version 5.8.1, Zoom Client for Meetings for Intune to version 5.8.4, and Zoom Rooms for Conference Rooms to version 5.8.3.
Are Google Android, Apple macOS, Apple iPhone OS, Linux Linux kernel, and Microsoft Windows vulnerable to CVE-2021-34424?
No, Google Android, Apple macOS, Apple iPhone OS, Linux Linux kernel, and Microsoft Windows are not vulnerable to CVE-2021-34424.
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