CVE-2021-30864: 
macOS vulnerability analysis and mitigation

CVE-2021-30864 is a security vulnerability discovered in Apple's macOS operating system that affects LaunchServices and CoreServices components. The vulnerability was fixed in macOS Monterey 12.0.1 and macOS Big Sur 11.6, released in October 2021. The issue was identified as a logic vulnerability in state management that could allow a sandboxed process to circumvent sandbox restrictions (Apple Support HT212869, Apple Support HT212804).

The vulnerability is characterized as a logic issue in state management that affects the sandbox implementation in macOS. The issue received a CVSS 3.1 Base Score of 8.6 HIGH with a vector string of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N, indicating a high severity rating. The vulnerability was discovered by Ron Hass of Perception Point and Ron Waisberg (NVD).

The primary impact of this vulnerability is that it allows a sandboxed process to bypass sandbox restrictions, potentially compromising the security boundaries established by macOS's sandbox system. This could lead to unauthorized access to protected system resources and potential privilege escalation (Apple Support HT212869).

The vulnerability requires a malicious application to be running within the sandbox environment to exploit the logic issue in state management. No public exploits have been reported in the wild at the time of the vulnerability disclosure (NVD).

Apple addressed this vulnerability by improving state management in the affected components. The fix was released in macOS Monterey 12.0.1 and macOS Big Sur 11.6. Users are advised to update their systems to these versions or later to mitigate the vulnerability (Apple Support HT212869, Apple Support HT212804).