High severity · published Sep 27, 2021
CVE-2021-34409
It was discovered that the installation packages of the Zoom Client for Meetings for MacOS (Standard and for IT Admin) installation before version 5.2.0, Zoom Client Plugin for…
7.8
CVSS
0.2%
EPSS
No
On KEV
Description
It was discovered that the installation packages of the Zoom Client for Meetings for MacOS (Standard and for IT Admin) installation before version 5.2.0, Zoom Client Plugin for Sharing iPhone/iPad before version 5.2.0, and Zoom Rooms for Conference before version 5.1.0, copy pre- and post- installation shell scripts to a user-writable directory. In the affected products listed below, a malicious actor with local access to a user's machine could use this flaw to potentially run arbitrary system commands in a higher privileged context during the installation process.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 9% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ME
Meetings · Zoom
before 5.2.0 · source: NVD
RO
Rooms · Zoom
before 5.1.0 · source: NVD
SS
Screen Sharing · Zoom
before 5.2.0; before 5.2.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-34409
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-34409
Vendor Advisory
https://explore.zoom.us/en/trust/security/security-bulletin
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