CVE-2024-44253 is a vulnerability identified in Apple macOS that allows an application with limited privileges to modify protected parts of the file system. The root cause is insufficient authorization checks, categorized under CWE-863 (Incorrect Authorization), which permits unauthorized modification of system files. This flaw does not require user interaction (UI:N) but does require local privileges (PR:L) and has a low attack complexity (AC:L). The vulnerability affects macOS versions prior to Sequoia 15.1, Sonoma 14.7.1, and Ventura 13.7.1, where Apple has implemented improved checks to mitigate the issue. The CVSS v3.1 base score is 5.5, indicating medium severity, with the vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N. This means the attack vector is local, the attacker needs low complexity and limited privileges, no user interaction is required, and the scope is unchanged. The impact is high on integrity, as the attacker can modify protected system files, but there is no impact on confidentiality or availability. No known exploits are currently reported in the wild. The vulnerability could be leveraged by malicious local users or malware to escalate privileges or persist by altering critical system files, potentially undermining system integrity and security controls.

The primary impact of CVE-2024-44253 is on the integrity of macOS systems. An attacker or malicious app with limited privileges can modify protected parts of the file system, potentially leading to privilege escalation, persistence mechanisms, or tampering with security controls. This could allow attackers to bypass security restrictions, install rootkits, or alter system behavior. Although confidentiality and availability are not directly affected, the integrity compromise can lead to broader security breaches. Organizations relying on macOS for critical operations, especially those with sensitive data or regulatory requirements, face risks of unauthorized system modifications that could undermine trust and operational stability. The lack of required user interaction lowers the barrier for exploitation once local access is obtained. Since no exploits are known in the wild yet, the risk is currently theoretical but could increase rapidly if weaponized. The medium severity reflects the need for timely patching to prevent potential misuse.

To mitigate CVE-2024-44253, organizations should immediately apply the security updates provided by Apple in macOS Sequoia 15.1, Sonoma 14.7.1, and Ventura 13.7.1 or later. Beyond patching, organizations should enforce the principle of least privilege by restricting local user permissions and limiting app installation to trusted sources only. Employ endpoint protection solutions capable of detecting unauthorized file system modifications and monitor system integrity regularly. Use macOS security features such as System Integrity Protection (SIP) and ensure they are enabled and properly configured. Implement application whitelisting to prevent untrusted apps from executing. Conduct regular audits of file system permissions and monitor logs for suspicious activity indicative of privilege escalation attempts. Educate users about the risks of installing untrusted software and maintain a robust incident response plan to quickly address any detected compromises. For environments with high security requirements, consider additional hardening and monitoring tailored to macOS systems.