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CVE-2021-34423

Description

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.

Risk Information

Base Score
9.8
MODERATE
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
Exploitation Probability
0.387

Associated Vulnerability

VulnerabilityOS Platform
Vulnerabilities CVE-2021-34423,CVE-2021-34424,CVE-2022-22781,CVE-2022-22782,CVE-2022-22786 are affected in Zoom 5.8.0Windows
Vulnerabilities CVE-2021-34423,CVE-2021-34424,CVE-2022-22781,CVE-2022-22782,CVE-2022-22786 are affected in Zoom 5.8.0(x64)Windows
Vulnerabilities CVE-2021-34424,CVE-2021-34423 are fixed in Zoom Rooms (5.15.5.3049)Windows
Vulnerabilities CVE-2021-34424,CVE-2021-34423 are fixed in Zoom (x64) (5.8.4.1736)Windows
Vulnerabilities CVE-2021-34424,CVE-2021-34423 are fixed in Zoom (x64) (5.15.7.20303)Windows
Vulnerabilities CVE-2021-34424,CVE-2021-34423 are fixed in Zoom Plugin for Citrix Receiver (5.8.4.21112)Windows
Vulnerabilities CVE-2021-34424,CVE-2021-34423 are fixed in Zoom Client for VDI (5.8.4.21112)Windows
Vulnerabilities CVE-2021-34424,CVE-2021-34423 are fixed in Zoom (5.8.4.1736)Windows
Vulnerabilities CVE-2021-34424,CVE-2021-34423 are fixed in Zoom Plugin for Vmware Horizon Client (5.8.4.21112)Windows
Vulnerabilities CVE-2021-34424,CVE-2021-34423 are fixed in Zoom (5.15.7.20303)Windows
Vulnerabilities CVE-2021-34424,CVE-2021-34423,CVE-2022-22779 are fixed in Zoom (x64) (5.8.4.1736)Windows
Vulnerabilities CVE-2021-34424,CVE-2021-34423,CVE-2022-22779 are fixed in Zoom (x64) (5.8.3.1581)Windows
Vulnerabilities CVE-2021-34424,CVE-2021-34423,CVE-2022-22779 are fixed in Zoom Plugin for Citrix Receiver (5.8.4.21112)Windows
Vulnerabilities CVE-2021-34424,CVE-2021-34423,CVE-2022-22779 are fixed in Zoom Client for VDI (5.8.4.21112)Windows
Vulnerabilities CVE-2021-34424,CVE-2021-34423,CVE-2022-22779 are fixed in Zoom (5.8.4.1736)Windows
Vulnerabilities CVE-2021-34424,CVE-2021-34423,CVE-2022-22779 are fixed in Zoom Plugin for Vmware Horizon Client (5.8.4.21112)Windows
Vulnerabilities CVE-2021-34424,CVE-2021-34423,CVE-2022-22779 are fixed in Zoom (5.8.3.1581)Windows
Vulnerabilities CVE-2021-34424,CVE-2021-34423,CVE-2022-22779 are fixed in Zoom Notes Plugin (5.8.3.135)Windows
Vulnerabilities CVE-2021-34424,CVE-2021-34423,CVE-2022-22779 are fixed in Zoom Outlook Plugin (5.8.3.136)Windows

Patch Details

Click to see the patches provided by ManageEngine for this CVE
Patch IDPatch Description
PATCH-321880Zoom (5.8.1.1435)
PATCH-319772Zoom (x64) (5.6.6.961)
PATCH-331905Zoom Rooms (5.15.5.3049)
PATCH-332244Zoom (x64) (5.15.7.20303)
PATCH-332244Zoom (x64) (5.15.7.20303)
PATCH-322463Zoom Client for VDI (5.8.4.21112)
PATCH-332243Zoom (5.15.7.20303)
PATCH-324009Zoom Plugin for Citrix Receiver (5.9.6.20931)
PATCH-332243Zoom (5.15.7.20303)
PATCH-333974Zoom (x64) (5.16.6.24712)
PATCH-333974Zoom (x64) (5.16.6.24712)
PATCH-322463Zoom Client for VDI (5.8.4.21112)
PATCH-333973Zoom (5.16.6.24712)
PATCH-324009Zoom Plugin for Citrix Receiver (5.9.6.20931)
PATCH-333973Zoom (5.16.6.24712)
PATCH-331891Zoom Notes Plugin (5.15.5.925)
PATCH-331892Zoom Outlook Plugin (5.15.5.926)

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234