Vulnerability identifier: #VU73695

Vulnerability risk: Medium

CVSSv3.1: 6.9 [CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-22885

CWE-ID: CWE-300

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Zoom Client for Windows
Client/Desktop applications / Office applications
Zoom Client for macOS
Client/Desktop applications / Office applications
Zoom Client for Linux
Client/Desktop applications / Office applications
Zoom Rooms for Windows
Client/Desktop applications / Office applications
Zoom Client for Android
Mobile applications / Apps for mobile phones
Zoom Client for iOS
Mobile applications / Apps for mobile phones
Zoom Rooms for macOS
Client/Desktop applications / Messaging software
Virtual Desktop Infrastructure (VDI)
Server applications / Conferencing, Collaboration and VoIP solutions

Vendor: Zoom Video Communications, Inc.

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to the way the Zoom client handles SMB shares. If a victim saves a local recording to an SMB location and later opens it using a link from Zoom’s web portal, an attacker positioned on an adjacent network to the victim client could set up a malicious SMB server to respond to client requests, causing the client to execute attacker controlled executables.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Zoom Client for Windows: 5.0.0 23168.0427 - 5.13.4 11835

Zoom Client for Android: 5.0.1 23478.0429 - 5.13.4 11364

Zoom Client for macOS: 5.0.0 23186.0427 - 5.13.4 14461

Zoom Client for Linux: 5.1.418436.0628 - 5.13.4 711

Zoom Client for iOS: 5.0.0 23161.0427 - 5.13.4 6295

Zoom Rooms for Windows: 5.0.0 1420.0426 - 5.13.0 2301

Zoom Rooms for macOS: 5.0.0 2236.0426 - 5.13.0 2196

Virtual Desktop Infrastructure (VDI): 5.0.1 - 5.13.1

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External links
http://explore.zoom.us/en/trust/security/security-bulletin/#ZSB-23005

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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