#VU63591 Improper validation of certificate with host mismatch in Zoom Video Communications, Inc. products - CVE-2022-22787

Vulnerability identifier: #VU63591

Vulnerability risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-22787

CWE-ID: CWE-297

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Zoom Workplace Desktop App for Windows
Client/Desktop applications / Office applications
Zoom Workplace Desktop App for macOS
Client/Desktop applications / Office applications
Zoom Workplace Desktop App for Linux
Client/Desktop applications / Office applications
Zoom Workplace App for Android
Mobile applications / Apps for mobile phones
Zoom Workplace App for iOS
Mobile applications / Apps for mobile phones

Vendor: Zoom Video Communications, Inc.

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to software fails to properly validate the hostname during a server switch request. A remote attacker can perform a man-in-the-middle (MitM) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Zoom Workplace Desktop App for Windows: 0.9.10042.0911 - 5.5.4 13142.0301

Zoom Workplace App for Android: 4.6.11 20553.0413 - 5.9.6 4756

Zoom Workplace Desktop App for macOS: 4.6.9 19273.0402 - 5.9.6 4993

Zoom Workplace Desktop App for Linux: 5.1.418436.0628 - 5.9.6 2225

Zoom Workplace App for iOS: 4.6.10 20012.0407 - 5.9.6 2729

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External links
https://explore.zoom.us/en/trust/security/security-bulletin/#ZSB-22009

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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.