CVE-2022-32797 is a high-severity vulnerability affecting Apple macOS systems, specifically related to the processing of AppleScript binaries. AppleScript is a scripting language created by Apple to automate tasks on macOS. This vulnerability arises when the system processes a maliciously crafted AppleScript binary, which can lead to unexpected termination of processes or, more critically, disclosure of process memory. The root cause is insufficient validation of input data (CWE-20: Improper Input Validation), allowing an attacker to craft AppleScript binaries that exploit this weakness. Successful exploitation requires local access (AV:L - Attack Vector: Local) and user interaction (UI:R - User Interaction Required), but no privileges are needed (PR:N - Privileges Required: None). The vulnerability impacts confidentiality (C:H - High impact on confidentiality) and availability (A:H - High impact on availability), but not integrity. The scope is unchanged (S:U), meaning the vulnerability affects only the vulnerable component. Apple addressed this issue in macOS Security Update 2022-005 Catalina, macOS Big Sur 11.6.8, and macOS Monterey 12.5 by implementing improved input validation checks. There are no known exploits in the wild at the time of publication. The CVSS v3.1 base score is 7.1, reflecting the high severity of the vulnerability. This vulnerability could be leveraged by attackers to cause denial of service or leak sensitive memory contents, potentially exposing sensitive information from running processes on affected macOS systems.

For European organizations using macOS devices, this vulnerability poses a risk primarily to confidentiality and availability. The disclosure of process memory could expose sensitive information such as credentials, cryptographic keys, or proprietary data, leading to potential data breaches or further compromise. Unexpected termination of processes could disrupt business operations, especially in environments relying on automation via AppleScript. Although exploitation requires local access and user interaction, insider threats or social engineering attacks could facilitate exploitation. Organizations with macOS endpoints in critical roles (e.g., software development, executive management, or sensitive data processing) are at higher risk. The impact is heightened in sectors with strict data protection requirements under GDPR, where unauthorized data disclosure can lead to regulatory penalties and reputational damage.

European organizations should ensure all macOS devices are updated promptly to the fixed versions: Security Update 2022-005 Catalina, macOS Big Sur 11.6.8, or macOS Monterey 12.5 or later. Beyond patching, organizations should restrict local access to macOS systems to trusted users only, enforce strong endpoint security policies, and educate users about the risks of executing untrusted AppleScript binaries or files. Implement application whitelisting to prevent execution of unauthorized scripts and binaries. Monitor for unusual process terminations or memory access patterns that could indicate exploitation attempts. Additionally, limit the use of AppleScript automation to essential workflows and audit scripts for security. Employ endpoint detection and response (EDR) solutions capable of detecting anomalous script execution or memory disclosure behaviors. Regularly review and update incident response plans to include scenarios involving local exploitation of macOS vulnerabilities.