Information disclosure in multiple Zoom products

1) Cleartext transmission of sensitive information

EUVDB-ID: #VU77820

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-36539

CWE-ID: CWE-319 - Cleartext Transmission of Sensitive Information

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to software did not use a per-meeting key to encrypt messages sent between user devices and Zoom, including messages sent during End-to-End Encrypted (E2EE) meetings.A remote attacker with ability to intercept and decrypt TLS communication can gain access to sensitive information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Zoom Client for Windows: 5.15.0 17890 - 5.15.1 17948

Zoom Client for macOS: 5.15.0 19644

Zoom Client for Linux: 5.15.0 4063

Zoom Client for iOS: 5.15.0 8765

Zoom Client for Android: 5.15.0 14500

Zoom Rooms for Windows: 5.15.0 2989

Zoom Rooms for macOS: 5.15.0 3588

Zoom Meeting SDK for Windows: 5.15.1

External links

http://explore.zoom.us/en/trust/security/security-bulletin/#ZSB-23025

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.