Local denial of service in Zoom Rooms for macOS clients

1) Inadequate Encryption Strength

EUVDB-ID: #VU70785

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-36925

CWE-ID: CWE-326 - Inadequate Encryption Strength

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to usage of an insecure key generation mechanism. The encryption key used for IPC between the Zoom Rooms daemon service and the Zoom Rooms client was generated using parameters that could be obtained by a local low-privileged application. That key can then be used to interact with the daemon service to execute privileged functions and cause a local denial of service.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Zoom Rooms Client for macOS: 5.0.0 2236.0426 - 5.11.3

CPE2.3

• cpe:2.3:a:zoom_video_communications:zoom_rooms_for_macos:5.0.0:2236.0426:*:*:*:*:*:*
• cpe:2.3:a:zoom_video_communications:zoom_rooms_for_macos:5.0.5:2542.0703:*:*:*:*:*:*
• cpe:2.3:a:zoom_video_communications:zoom_rooms_for_macos:5.1.2:2806.0821:*:*:*:*:*:*

External links

https://explore.zoom.us/en/trust/security/security-bulletin/#ZSB-22031

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.

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.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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