CVE-2021-34420

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-34420
The Zoom Client for Meetings for Windows installer before version 5.5.4 does not properly verify the signature of files with .msi, .ps1, and .bat extensions. This could lead to a malicious actor installing malicious software on a customer’s computer.

4.7 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

4.3 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:M/Au:N/C:N/I:P/A:N

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References
Link Resource
https://explore.zoom.us/en/trust/security/security-bulletin Vendor Advisory
https://medium.com/manomano-tech/a-red-team-operation-leveraging-a-zero-day-vulnerability-in-zoom-80f57fb0822e Third Party Advisory
https://explore.zoom.us/en/trust/security/security-bulletin Vendor Advisory
https://medium.com/manomano-tech/a-red-team-operation-leveraging-a-zero-day-vulnerability-in-zoom-80f57fb0822e Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:zoom:zoom_client_for_meetings:*:*:*:*:*:windows:*:*
History

21 Nov 2024, 06:10

Type Values Removed Values Added
References () https://explore.zoom.us/en/trust/security/security-bulletin - Vendor Advisory () https://explore.zoom.us/en/trust/security/security-bulletin - Vendor Advisory
References () https://medium.com/manomano-tech/a-red-team-operation-leveraging-a-zero-day-vulnerability-in-zoom-80f57fb0822e - Third Party Advisory () https://medium.com/manomano-tech/a-red-team-operation-leveraging-a-zero-day-vulnerability-in-zoom-80f57fb0822e - Third Party Advisory
CVSS v2 : 4.3
v3 : 7.4 		v2 : 4.3
v3 : 4.7

02 Dec 2021, 19:15

Type Values Removed Values Added
Summary The Zoom Client for Meetings for Windows installer before version 5.5.4 does not properly verify the signature of files with .msi, .ps1, and .bat extensions. This could lead to a malicious actor installing malicious software on a customer's computer. The Zoom Client for Meetings for Windows installer before version 5.5.4 does not properly verify the signature of files with .msi, .ps1, and .bat extensions. This could lead to a malicious actor installing malicious software on a customer’s computer.

16 Nov 2021, 17:38

Type Values Removed Values Added
CWE CWE-347
References (MISC) https://medium.com/manomano-tech/a-red-team-operation-leveraging-a-zero-day-vulnerability-in-zoom-80f57fb0822e - (MISC) https://medium.com/manomano-tech/a-red-team-operation-leveraging-a-zero-day-vulnerability-in-zoom-80f57fb0822e - Third Party Advisory
References (MISC) https://explore.zoom.us/en/trust/security/security-bulletin - (MISC) https://explore.zoom.us/en/trust/security/security-bulletin - Vendor Advisory
CVSS v2 : unknown
v3 : unknown 		v2 : 4.3
v3 : 7.4
CPE cpe:2.3:a:zoom:zoom_client_for_meetings:*:*:*:*:*:windows:*:*

12 Nov 2021, 16:28

Type Values Removed Values Added
New CVE
Information

Published : 2021-11-11 23:15

Updated : 2024-11-21 06:10

NVD link : CVE-2021-34420

Mitre link : CVE-2021-34420

CVE.ORG link : CVE-2021-34420

JSON object : View

Products Affected

zoom

  • zoom_client_for_meetings
CWE
CWE-347

Improper Verification of Cryptographic Signature