CVE-2024-23247 is a memory handling vulnerability in Apple macOS that can be triggered by processing a maliciously crafted file. The vulnerability allows an attacker to cause unexpected application termination (denial of service) or execute arbitrary code with the privileges of the targeted application. The root cause relates to improper memory management, which Apple has addressed through improved memory handling in macOS Sonoma 14.4, Monterey 12.7.4, and Ventura 13.6.5. The CVSS v3.1 score of 7.8 reflects a high-severity issue with low attack complexity (AC:L), no privileges required (PR:N), but requiring user interaction (UI:R). The scope is unchanged (S:U), and the impact on confidentiality, integrity, and availability is high (C:H/I:H/A:H). The vulnerability is categorized under CWE-77, which typically relates to command injection or improper neutralization of special elements used in commands. Although no exploits have been observed in the wild, the potential for arbitrary code execution makes this a critical risk. The vulnerability affects unspecified macOS versions prior to the patched releases, implying a broad range of users could be impacted. Attackers could leverage this flaw by enticing users to open or process malicious files, potentially leading to full system compromise or data breaches.

For European organizations, the impact of CVE-2024-23247 is significant due to the widespread use of macOS in sectors such as creative media, finance, government, and technology. Successful exploitation could result in unauthorized access to sensitive data, disruption of critical services through application crashes, and potential deployment of malware or ransomware. The arbitrary code execution capability means attackers could escalate privileges or move laterally within networks, increasing the risk of large-scale breaches. Confidentiality, integrity, and availability of systems and data are all at high risk. Organizations relying on macOS for endpoint devices face operational and reputational risks if exploited. Additionally, the requirement for user interaction means phishing or social engineering campaigns could be used to trigger the vulnerability, increasing the attack surface. The lack of known exploits in the wild currently provides a window for proactive patching and mitigation before widespread exploitation occurs.

1. Immediately apply the security updates released by Apple for macOS Sonoma 14.4, Monterey 12.7.4, and Ventura 13.6.5 to all affected systems. 2. Implement strict controls on file sources, restricting users from opening files from untrusted or unknown origins, especially via email or web downloads. 3. Enhance user awareness training focused on recognizing phishing and social engineering attempts that could deliver malicious files. 4. Employ endpoint detection and response (EDR) solutions capable of detecting anomalous application crashes or suspicious code execution patterns on macOS devices. 5. Use application whitelisting and sandboxing to limit the impact of arbitrary code execution. 6. Monitor logs and network traffic for unusual activity following patch deployment to detect potential exploitation attempts. 7. Coordinate with IT asset management to identify all macOS devices and ensure timely patching. 8. Consider network segmentation to limit lateral movement if a device is compromised. 9. Regularly back up critical data and verify backup integrity to enable recovery in case of ransomware or data loss.