Two vulnerabilities in Zoom Client for Windows

Published: 2023-08-08

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-39216 CVE-2023-36534
CWE-ID	CWE-20 CWE-22
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Zoom Client for Windows Client/Desktop applications / Office applications
Vendor	Zoom Video Communications, Inc.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU79128

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-39216

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can pass specially crafted input to the application and execute arbitrary code.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Zoom Client for Windows: 5.0.0 23168.0427 - 5.14.6 15434

External links

http://explore.zoom.us/en/trust/security/security-bulletin/#ZSB-23032

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

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

2) Path traversal

EUVDB-ID: #VU79127

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-36534

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')