Paper/Archive/CVE-2021-34423

CVE-2021-34423

Zoom Video Communications Inc Zoom Client for Meetings (for Android, iOS, Linux, macOS, and Windows) — Buffer overflow in Zoom client and other products

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Zoom Client for Meetings (for Android, iOS, Linux, macOS, and Windows)unspecified – < 5.8.45.8.4CNA
Zoom Client for Meetings for Blackberry (for Android and iOS)unspecified – < 5.8.15.8.1CNA
Zoom Client for Meetings for intune (for Android and iOS)unspecified – < 5.8.45.8.4CNA
Zoom Client for Meetings for Chrome OSunspecified – < 5.0.15.0.1CNA
Zoom Rooms for Conference Room (for Android, AndroidBali, macOS, and Windows)unspecified – < 5.8.35.8.3CNA
Controllers for Zoom Rooms (for Android, iOS, and Windows)unspecified – < 5.8.35.8.3CNA
Zoom VDI Windows Meeting Clientunspecified – < 5.8.45.8.4CNA
Zoom VDI Azure Virtual Desktop Plugins (for Windows x86 or x64, IGEL x64, Ubuntu x64, HP ThinPro OS x64)unspecified – < 5.8.4.211125.8.4.21112CNA
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)unspecified – < 5.8.4.211125.8.4.21112CNA
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)unspecified – < 5.8.4.211125.8.4.21112CNA
Zoom Meeting SDK for Androidunspecified – < 5.7.6.19225.7.6.1922CNA
Zoom Meeting SDK for iOSunspecified – < 5.7.6.10825.7.6.1082CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Zoom (CNA)7.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

References

refexplore.zoom.us/en/trust/security/security-bulletinrefpacketstormsecurity.com/files/165417/Zoom-Chat-Message-Processing-Buffer-Overflow.html