CVE-2021-34423

Published on: 11/24/2021 12:00:00 AM UTC

Last Modified on: 12/02/2021 09:15:00 AM UTC

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Certain versions of Zoom Client For Meetings For Android IOS Linux MacOS And Windows from Zoom Video Communications Inc contain the following vulnerability:

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.

CVE References

Description Tags Link
Security Bulletin | Zoom explore.zoom.us
text/html
URL Logo MISC explore.zoom.us/en/trust/security/security-bulletin

Related QID Numbers

  • 376117 Zoom Client Multiple Vulnerabilities

Exploit/POC from Github

POC for scanning ProxyShell(CVE-2021-34423,CVE-2021-34473,CVE-2021-31207)

Known Affected Software

Vendor Product Version
Zoom Video Communications Inc Zoom_Client_for_Meetings_for_Android_iOS_Linux_macOS_and_Windows< 5.8.4
Zoom Video Communications Inc Zoom_Client_for_Meetings_for_Blackberry_for_Android_and_iOS< 5.8.1
Zoom Video Communications Inc Zoom_Client_for_Meetings_for_intune_for_Android_and_iOS< 5.8.4
Zoom Video Communications Inc Zoom_Client_for_Meetings_for_Chrome_OS< 5.0.1
Zoom Video Communications Inc Zoom_Rooms_for_Conference_Room_for_Android_AndroidBali_macOS_and_Windows< 5.8.3
Zoom Video Communications Inc Controllers_for_Zoom_Rooms_for_Android_iOS_and_Windows< 5.8.3
Zoom Video Communications Inc Zoom_VDI_Windows_Meeting_Client< 5.8.4
Zoom Video Communications Inc Zoom_VDI_Azure_Virtual_Desktop_Plugins_for_Windows_x86_or_x64_IGEL_x64_Ubuntu_x64_HP_ThinPro_OS_x64< 5.8.4.21112
Zoom Video Communications Inc 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< 5.8.4.21112
Zoom Video Communications Inc 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< 5.8.4.21112
Zoom Video Communications Inc Zoom_Meeting_SDK_for_Android< 5.7.6.1922
Zoom Video Communications Inc Zoom_Meeting_SDK_for_iOS< 5.7.6.1082
Zoom Video Communications Inc Zoom_Meeting_SDK_for_macOS< 5.7.6.1340
Zoom Video Communications Inc Zoom_Meeting_SDK_for_Windows< 5.7.6.1081
Zoom Video Communications Inc Zoom_Video_SDK_for_Android_iOS_macOS_and_Windows< 1.1.2
Zoom Video Communications Inc Zoom_On-Premise_Meeting_Connector_Controller< 4.8.12.20211115
Zoom Video Communications Inc Zoom_On-Premise_Meeting_Connector_MMR< 4.8.12.20211115
Zoom Video Communications Inc Zoom_On-Premise_Recording_Connector< 5.1.0.65.20211116
Zoom Video Communications Inc Zoom_On-Premise_Virtual_Room_Connector< 4.4.7266.20211117
Zoom Video Communications Inc Zoom_On-Premise_Virtual_Room_Connector_Load_Balancer< 2.5.5692.20211117
Zoom Video Communications Inc Zoom_Hybrid_Zproxy< 1.0.1058.20211116
Zoom Video Communications Inc Zoom_Hybrid_MMR< 4.6.20211116.131_x86-64

Discovery Credit

Natalie Silvanovich of Google Project Zero

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2021-34423 : A buffer overflow vulnerability was discovered in Zoom Client for Meetings for Android, iOS,… twitter.com/i/web/status/1… 2021-11-24 17:05:11
© CVE.report 2021 Twitter Nitter Twitter Viewer |

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