CVE-2024-27813 is a vulnerability identified in Apple macOS that allows an application to execute arbitrary code outside its sandbox or with elevated privileges. The root cause is insufficient validation checks within the operating system that could be exploited by an app possessing limited privileges to escape sandbox restrictions or gain higher privileges than intended. This vulnerability affects macOS versions prior to 14.5 (Sonoma), where Apple has implemented improved checks to prevent such privilege escalation and sandbox escape. The vulnerability requires the attacker to have local privileges (AV:L) and does not require user interaction (UI:N), making it a local privilege escalation vector. The CVSS v3.1 base score is 5.3, indicating a medium severity level, with impacts on confidentiality, integrity, and availability rated as low to moderate. The scope is unchanged (S:U), meaning the exploit affects only the vulnerable component without impacting other system components. No known exploits have been reported in the wild, suggesting limited active exploitation at this time. However, the potential for an attacker to break out of sandbox constraints or elevate privileges could lead to unauthorized code execution, data exposure, or system disruption. This vulnerability is particularly relevant for environments where untrusted or third-party applications run on macOS systems, including enterprise and development environments. The fix involves enhanced validation and sandbox enforcement introduced in macOS Sonoma 14.5, which users and administrators should apply promptly to mitigate risk.

The vulnerability allows an attacker with local privileges to execute arbitrary code outside the sandbox or with elevated privileges, potentially compromising system integrity and availability. This could lead to unauthorized access to sensitive data, modification or deletion of critical files, and disruption of system operations. Although the confidentiality impact is rated low, the ability to escape sandbox restrictions and elevate privileges can facilitate further attacks, including installation of persistent malware or lateral movement within a network. The medium CVSS score reflects the moderate risk posed by the vulnerability, given that exploitation requires local access and some privileges. Organizations relying on macOS for critical operations, especially those running untrusted applications or with multiple users, face increased risk of privilege escalation attacks. The absence of known exploits in the wild reduces immediate threat but does not eliminate the risk of future exploitation. Failure to patch could expose systems to targeted attacks aiming to bypass security controls and gain unauthorized system-level access.

1. Upgrade all affected macOS systems to version 14.5 (Sonoma) or later, where the vulnerability is fixed with improved sandbox and privilege checks. 2. Enforce strict access controls and limit local user privileges to reduce the attack surface for local privilege escalation. 3. Implement application whitelisting and restrict installation of untrusted or unsigned applications to minimize exposure to malicious code attempting sandbox escape. 4. Monitor system logs and behavior for unusual privilege escalation attempts or sandbox violations. 5. Use endpoint detection and response (EDR) solutions capable of detecting anomalous local code execution patterns. 6. Educate users about the risks of running untrusted applications and the importance of applying security updates promptly. 7. For managed environments, deploy automated patch management to ensure timely updates. 8. Review and harden sandbox policies and configurations where possible to add additional layers of defense.