CVE-2021-34423 vulnerability in Zoom Products
Published on November 24, 2021
Buffer overflow in Zoom client and other products
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.
Products Associated with CVE-2021-34423
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Affected Versions
Zoom Video Communications Inc Zoom Client for Meetings (for Android, iOS, Linux, macOS, and Windows):- Version unspecified and below 5.8.4 is affected.
- Version unspecified and below 5.8.1 is affected.
- Version unspecified and below 5.8.4 is affected.
- Version unspecified and below 5.0.1 is affected.
- Version unspecified and below 5.8.3 is affected.
- Version unspecified and below 5.8.3 is affected.
- Version unspecified and below 5.8.4 is affected.
- Version unspecified and below 5.8.4.21112 is affected.
- Version unspecified and below 5.8.4.21112 is affected.
- Version unspecified and below 5.8.4.21112 is affected.
- Version unspecified and below 5.7.6.1922 is affected.
- Version unspecified and below 5.7.6.1082 is affected.
- Version unspecified and below 5.7.6.1340 is affected.
- Version unspecified and below 5.7.6.1081 is affected.
- Version unspecified and below 1.1.2 is affected.
- Version unspecified and below 4.8.12.20211115 is affected.
- Version unspecified and below 4.8.12.20211115 is affected.
- Version unspecified and below 5.1.0.65.20211116 is affected.
- Version unspecified and below 4.4.7266.20211117 is affected.
- Version unspecified and below 2.5.5692.20211117 is affected.
- Version unspecified and below 1.0.1058.20211116 is affected.
- Version unspecified and below 4.6.20211116.131_x86-64 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.