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CVE-2021-34424— Process memory exposure in Zoom Client and other products

Quick assessment

Affected
Zoom Video Communications Inc Zoom Client for Meetings (for Android, iOS, Linux, macOS, and Windows)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ZOOM Client是美国ZOOM公司的一款支持多种平台的视频会议客户端应用程序。 Zoom Client for Meetings存在安全漏洞，该漏洞源于在5.8.4版本之前发现了Zoom会议客户端(适用于Android、iOS、Linux、macOS和Windows)漏洞，在5.8.1版本之前发现了Zoom会议客户端(适用于Android和iOS)，在5.8.4版本之前发现了Zoom会议客户端(适用于Android和iOS)漏洞，Zoom Client for Meetings for Chrome

AI Predicted 4.3 Difficulty: Hard EPSS 1.72% · P77

Possible ATT&CK Techniques 1 AI

T1003 · OS Credential Dumping
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I. Basic Information for CVE-2021-34424

Vulnerability Information
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Vulnerability Title
Process memory exposure in Zoom Client and other products
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
ZOOM Client 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ZOOM Client是美国ZOOM公司的一款支持多种平台的视频会议客户端应用程序。 Zoom Client for Meetings存在安全漏洞，该漏洞源于在5.8.4版本之前发现了Zoom会议客户端(适用于Android、iOS、Linux、macOS和Windows)漏洞，在5.8.1版本之前发现了Zoom会议客户端(适用于Android和iOS)，在5.8.4版本之前发现了Zoom会议客户端(适用于Android和iOS)漏洞，Zoom Client for Meetings for Chrome
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Zoom Video Communications Inc Zoom Client for Meetings (for Android, iOS, Linux, macOS, and Windows) unspecified ~ 5.8.4 -
Zoom Video Communications Inc Zoom Client for Meetings for Blackberry (for Android and iOS) unspecified ~ 5.8.1 -
Zoom Video Communications Inc Zoom Client for Meetings for intune (for Android and iOS) unspecified ~ 5.8.4 -
Zoom Video Communications Inc Zoom Client for Meetings for Chrome OS unspecified ~ 5.0.1 -
Zoom Video Communications Inc Zoom Rooms for Conference Room (for Android, AndroidBali, macOS, and Windows) unspecified ~ 5.8.3 -
Zoom Video Communications Inc Controllers for Zoom Rooms (for Android, iOS, and Windows) unspecified ~ 5.8.3 -
Zoom Video Communications Inc Zoom VDI Windows Meeting Client unspecified ~ 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) unspecified ~ 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) unspecified ~ 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) unspecified ~ 5.8.4.21112 -
Zoom Video Communications Inc Zoom Meeting SDK for Android unspecified ~ 5.7.6.1922 -
Zoom Video Communications Inc Zoom Meeting SDK for iOS unspecified ~ 5.7.6.1082 -
Zoom Video Communications Inc Zoom Meeting SDK for macOS unspecified ~ 5.7.6.1340 -
Zoom Video Communications Inc Zoom Meeting SDK for Windows unspecified ~ 5.7.6.1081 -
Zoom Video Communications Inc Zoom Video SDK (for Android, iOS, macOS, and Windows) unspecified ~ 1.1.2 -
Zoom Video Communications Inc Zoom on-premise Meeting Connector unspecified ~ 4.8.12.20211115 -
Zoom Video Communications Inc Zoom on-premise Meeting Connector MMR unspecified ~ 4.8.12.20211115 -
Zoom Video Communications Inc Zoom on-premise Recording Connector unspecified ~ 5.1.0.65.20211116 -
Zoom Video Communications Inc Zoom on-premise Virtual Room Connector unspecified ~ 4.4.7266.20211117 -
Zoom Video Communications Inc Zoom on-premise Virtual Room Connector Load Balancer unspecified ~ 2.5.5692.20211117 -
Zoom Video Communications Inc Zoom Hybrid Zproxy unspecified ~ 1.0.1058.20211116 -
Zoom Video Communications Inc Zoom Hybrid MMR unspecified ~ 4.6.20211116.131_x86-64 -

II. Public POCs for CVE-2021-34424

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III. Intelligence Information for CVE-2021-34424

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Other References for CVE-2021-34424 (1)

IV. Related Vulnerabilities

Same product: Zoom Client for Meetings (for Android, iOS, Linux, macOS, and Windows)
Same vendor: Zoom Video Communications Inc

V. Comments for CVE-2021-34424

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