#VU58672 Information disclosure in macOS - CVE-2021-30866

Vulnerability identifier: #VU58672

Vulnerability risk: Low

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

CVE-ID: CVE-2021-30866

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
macOS
Operating systems & Components / Operating system

Vendor: Apple Inc.

Description

The vulnerability allows a remote attacker to track users.

The vulnerability exists due to excessive data output in the bootp subsystem, as the daemon broadcasts user's MAC address. A remote attacker can track users by their WiFi MAC address.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

macOS: 12.0 21A344

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External links
https://support.apple.com/en-us/HT212869

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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.