CVE-2022-26727

Vulnerability

CVE-2022-26727 is an entitlement issue in macOS that allows a malicious application to modify protected parts of the file system. The vulnerability affects macOS Monterey before version 12.4 and macOS Catalina before Security Update 2022-004 [1][2]. The issue was addressed by improving entitlement checks.

Exploitation

An attacker must have a malicious application installed on the target system. The application can then exploit the flawed entitlement mechanism to bypass file system protections and modify protected areas. No additional authentication or user interaction beyond installing the app is required.

Impact

Successful exploitation enables the malicious application to modify protected parts of the file system, potentially altering system files or other protected content. This could lead to system instability, privilege escalation, or further compromise of the device.

Mitigation

Apple released fixes in macOS Monterey 12.4 and Security Update 2022-004 Catalina on May 16, 2022 [1][2]. Users should update to these versions. No workarounds are available.