Vulnerability identifier: #VU69355

Vulnerability risk: Low

CVSSv3.1: 5.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-28766

CWE-ID: CWE-427

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Zoom Client for Windows
Client/Desktop applications / Office applications
Zoom Rooms for Windows
Client/Desktop applications / Office applications
Virtual Desktop Infrastructure (VDI)
Server applications / Conferencing, Collaboration and VoIP solutions

Vendor: Zoom Video Communications, Inc.

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to the application loads DLL libraries in an insecure manner. A local user can force the application to load a malicious .dll file and execute arbitrary code on the system in the context of the Zoom client.

Note, the vulnerability affects only Windows 32-bit clients.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Zoom Client for Windows: 5.0.0 23168.0427 - 5.12.3 9638

Virtual Desktop Infrastructure (VDI): 5.0.1 - 5.12.3

Zoom Rooms for Windows: 5.0.0 1420.0426 - 5.12.2 1970

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External links
http://explore.zoom.us/en/trust/security/security-bulletin/#ZSB-22027

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.