Vulnerability identifier: #VU73693

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-22881

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Zoom Client for Windows
Client/Desktop applications / Office applications
Zoom Client for Linux
Client/Desktop applications / Office applications
Zoom Client for macOS
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

Vendor: Zoom Video Communications, Inc.

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when parsing STUN packets. A remote attacker can send specially crafted UDP traffic to the application and perform a denial of service (DoS) attack.

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 iOS: 5.0.0 23161.0427 - 5.13.4 6295

Zoom Client for Linux: 5.1.418436.0628 - 5.13.4 711

Zoom Client for macOS: 5.0.0 23186.0427 - 5.13.4 14461

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External links
http://explore.zoom.us/en/trust/security/security-bulletin/#ZSB-23002

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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 Internet.

Is there known malware, which exploits this vulnerability?

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