Information disclosure in macOS - CVE-2021-30866
Published: December 8, 2021
Vulnerability identifier: #VU58672
CSH Severity: Low
CVSS v4: 6.3 [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]
CVE-ID: CVE-2021-30866
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
macOS
How to mitigate CVE-2021-30866
Install updates from vendor's website.
macOS - update to 12.0.1 21A559