Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2021-34423

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.

Published

2021-11-24T17:15:07.757

Last Modified

2024-11-21T06:10:22.413

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

10.0

Impact Score

6.4

Weaknesses
  • Type: Primary
    CWE-120
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application zoom meetings < 5.8.3 Yes
Operating System google android - No
Application zoom meetings < 5.8.4 Yes
Operating System apple macos - No
Application zoom meetings < 5.8.4 Yes
Operating System apple iphone_os - No
Application zoom meetings < 5.8.4 Yes
Operating System linux linux_kernel - No
Application zoom meetings < 5.8.4 Yes
Operating System microsoft windows - No
Application zoom meetings_for_blackberry < 5.8.1 Yes
Operating System google android - No
Application zoom meetings_for_blackberry < 5.8.1 Yes
Operating System apple iphone_os - No
Application zoom meetings_for_intune < 5.8.4 Yes
Operating System apple iphone_os - No
Application zoom meetings_for_intune < 5.8.4 Yes
Operating System google android - No
Application zoom meetings_for_chrome_os < 5.0.1 Yes
Application zoom rooms_for_conference_rooms < 5.8.3 Yes
Operating System google android - No
Application zoom rooms_for_conference_rooms < 5.8.3 Yes
Operating System apple macos - No
Application zoom rooms_for_conference_rooms < 5.8.3 Yes
Operating System microsoft windows - No
Application zoom controllers_for_zoom_rooms < 5.8.3 Yes
Operating System microsoft windows - No
Application zoom controllers_for_zoom_rooms < 5.8.3 Yes
Operating System apple iphone_os - No
Application zoom controllers_for_zoom_rooms < 5.8.3 Yes
Operating System google android - No
Application zoom virtual_desktop_infrastructure < 5.8.4 Yes
Application zoom android_meeting_sdk < 5.7.6.1922 Yes
Application zoom iphone_os_meeting_sdk < 5.7.6.1082 Yes
Application zoom macos_meeting_sdk < 5.7.6.1340 Yes
Application zoom windows_meeting_sdk < 5.7.6.1081 Yes
Application zoom android_video_sdk < 1.1.2 Yes
Application zoom iphone_os_video_sdk < 1.1.2 Yes
Application zoom macos_video_sdk < 1.1.2 Yes
Application zoom windows_video_sdk < 1.1.2 Yes
Application zoom hybrid_mmr < 4.6.20211116.131 Yes
Application zoom hybrid_zproxy < 1.0.1058.20211116 Yes
Application zoom zoom_on-premise_meeting_connector_controller < 4.8.12.20211115 Yes
Application zoom zoom_on-premise_meeting_connector_mmr < 4.8.12.20211115 Yes
Application zoom zoom_on-premise_recording_connector < 5.1.0.65.20211116 Yes
Application zoom zoom_on-premise_virtual_room_connector < 4.4.7266.20211117 Yes
Application zoom zoom_on-premise_virtual_room_connector_load_balancer < 2.5.5692.20211117 Yes
Application zoom vdi_azure_virtual_desktop < 5.8.4.21112 Yes
Application zoom vdi_citrix < 5.8.4.21112 Yes
Application zoom vdi_vmware < 5.8.4.21112 Yes
Application zoom vdi_windows_meeting_client < 5.8.4 Yes
References