CVE-2021-34409

27.09.2021, 14:15

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	NIST	7.8 HIGH	LOCAL	HIGH	LOW	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Zoom	CNA	7.8 HIGH	LOCAL	HIGH	LOW	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CVE	ADP	---				---

Base Score

CVSS 3.x

EPSS Score

Percentile: 31%

Vendor	Product	Version
zoom	meetings	𝑥 < 5.2.0
zoom	rooms	𝑥 < 5.1.0
zoom	screen_sharing	𝑥 < 5.2.0

𝑥

= Vulnerable software versions

Common Weakness Enumeration

CWE-732 - Incorrect Permission Assignment for Critical Resource
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.

References

https://explore.zoom.us/en/trust/security/security-bulletin