CVE-2021-34423
Zoom Client for Meetings and Related Products Buffer Overflow Vulnerability
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.
INFO
Published Date :
Nov. 24, 2021, 5:15 p.m.
Last Modified :
April 29, 2022, 5:57 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2021-34423 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2021-34423
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-34423.
| URL | Resource |
|---|---|
| http://packetstormsecurity.com/files/165417/Zoom-Chat-Message-Processing-Buffer-Overflow.html | Third Party Advisory VDB Entry |
| https://explore.zoom.us/en/trust/security/security-bulletin | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
CVE-2021-34473 Microsoft Exchange Server Remote Code Execution Vulnerability
Python
nuclei scanner for proxyshell ( CVE-2021-34473 )
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-34423 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-34423 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Apr. 29, 2022
Action Type Old Value New Value Changed Reference Type http://packetstormsecurity.com/files/165417/Zoom-Chat-Message-Processing-Buffer-Overflow.html No Types Assigned http://packetstormsecurity.com/files/165417/Zoom-Chat-Message-Processing-Buffer-Overflow.html Third Party Advisory, VDB Entry -
CVE Modified by [email protected]
Jan. 03, 2022
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/165417/Zoom-Chat-Message-Processing-Buffer-Overflow.html [No Types Assigned] -
Initial Analysis by [email protected]
Dec. 03, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://explore.zoom.us/en/trust/security/security-bulletin No Types Assigned https://explore.zoom.us/en/trust/security/security-bulletin Vendor Advisory Added CWE NIST CWE-120 Added CPE Configuration AND OR *cpe:2.3:a:zoom:meetings:*:*:*:*:*:*:*:* versions up to (excluding) 5.8.3 OR cpe:2.3:o:google:android:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:a:zoom:meetings:*:*:*:*:*:*:*:* versions up to (excluding) 5.8.4 OR cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:a:zoom:meetings:*:*:*:*:*:*:*:* versions up to (excluding) 5.8.4 OR cpe:2.3:o:apple:iphone_os:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:a:zoom:meetings:*:*:*:*:*:*:*:* versions up to (excluding) 5.8.4 OR cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:a:zoom:meetings:*:*:*:*:*:*:*:* versions up to (excluding) 5.8.4 OR cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:a:zoom:meetings_for_blackberry:*:*:*:*:*:*:*:* versions up to (excluding) 5.8.1 OR cpe:2.3:o:google:android:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:a:zoom:meetings_for_blackberry:*:*:*:*:*:*:*:* versions up to (excluding) 5.8.1 OR cpe:2.3:o:apple:iphone_os:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:a:zoom:meetings_for_intune:*:*:*:*:*:*:*:* versions up to (excluding) 5.8.4 OR cpe:2.3:o:apple:iphone_os:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:a:zoom:meetings_for_intune:*:*:*:*:*:*:*:* versions up to (excluding) 5.8.4 OR cpe:2.3:o:google:android:-:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:zoom:meetings_for_chrome_os:*:*:*:*:*:*:*:* versions up to (excluding) 5.0.1 Added CPE Configuration AND OR *cpe:2.3:a:zoom:rooms_for_conference_rooms:*:*:*:*:*:*:*:* versions up to (excluding) 5.8.3 OR cpe:2.3:o:google:android:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:a:zoom:rooms_for_conference_rooms:*:*:*:*:*:*:*:* versions up to (excluding) 5.8.3 OR cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:a:zoom:rooms_for_conference_rooms:*:*:*:*:*:*:*:* versions up to (excluding) 5.8.3 OR cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:a:zoom:controllers_for_zoom_rooms:*:*:*:*:*:*:*:* versions up to (excluding) 5.8.3 OR cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:a:zoom:controllers_for_zoom_rooms:*:*:*:*:*:*:*:* versions up to (excluding) 5.8.3 OR cpe:2.3:o:apple:iphone_os:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:a:zoom:controllers_for_zoom_rooms:*:*:*:*:*:*:*:* versions up to (excluding) 5.8.3 OR cpe:2.3:o:google:android:-:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:zoom:virtual_desktop_infrastructure:*:*:*:*:*:*:*:* versions up to (excluding) 5.8.4 Added CPE Configuration OR *cpe:2.3:a:zoom:android_meeting_sdk:*:*:*:*:*:*:*:* versions up to (excluding) 5.7.6.1922 *cpe:2.3:a:zoom:iphone_os_meeting_sdk:*:*:*:*:*:*:*:* versions up to (excluding) 5.7.6.1082 *cpe:2.3:a:zoom:macos_meeting_sdk:*:*:*:*:*:*:*:* versions up to (excluding) 5.7.6.1340 *cpe:2.3:a:zoom:windows_meeting_sdk:*:*:*:*:*:*:*:* versions up to (excluding) 5.7.6.1081 Added CPE Configuration OR *cpe:2.3:a:zoom:android_video_sdk:*:*:*:*:*:*:*:* versions up to (excluding) 1.1.2 *cpe:2.3:a:zoom:iphone_os_video_sdk:*:*:*:*:*:*:*:* versions up to (excluding) 1.1.2 *cpe:2.3:a:zoom:macos_video_sdk:*:*:*:*:*:*:*:* versions up to (excluding) 1.1.2 *cpe:2.3:a:zoom:windows_video_sdk:*:*:*:*:*:*:*:* versions up to (excluding) 1.1.2 Added CPE Configuration OR *cpe:2.3:a:zoom:hybrid_mmr:*:*:*:*:*:*:*:* versions up to (excluding) 4.6.20211116.131 *cpe:2.3:a:zoom:hybrid_zproxy:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.1058.20211116 *cpe:2.3:a:zoom:zoom_on-premise_meeting_connector_controller:*:*:*:*:*:*:*:* versions up to (excluding) 4.8.12.20211115 *cpe:2.3:a:zoom:zoom_on-premise_meeting_connector_mmr:*:*:*:*:*:*:*:* versions up to (excluding) 4.8.12.20211115 *cpe:2.3:a:zoom:zoom_on-premise_recording_connector:*:*:*:*:*:*:*:* versions up to (excluding) 5.1.0.65.20211116 *cpe:2.3:a:zoom:zoom_on-premise_virtual_room_connector:*:*:*:*:*:*:*:* versions up to (excluding) 4.4.7266.20211117 *cpe:2.3:a:zoom:zoom_on-premise_virtual_room_connector_load_balancer:*:*:*:*:*:*:*:* versions up to (excluding) 2.5.5692.20211117 Added CPE Configuration OR *cpe:2.3:a:zoom:vdi_azure_virtual_desktop:*:*:*:*:*:*:*:* versions up to (excluding) 5.8.4.21112 *cpe:2.3:a:zoom:vdi_citrix:*:*:*:*:*:*:*:* versions up to (excluding) 5.8.4.21112 *cpe:2.3:a:zoom:vdi_vmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.8.4.21112 *cpe:2.3:a:zoom:vdi_windows_meeting_client:*:*:*:*:*:*:*:* versions up to (excluding) 5.8.4 -
CVE Modified by [email protected]
Dec. 02, 2021
Action Type Old Value New Value Changed 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 before version 5.8.4, 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. 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.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-34423 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-34423
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.35 }} -0.06%
score
0.72244
percentile