File Quarantine Bypass in Apple iOS and macOS

Executive Summary

This vulnerability involves a file quarantine bypass in Apple operating systems. It allows an archive to evade Gatekeeper, which is Apple's security feature that checks downloaded files for malicious content before execution.

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Detection Guidance

This vulnerability involves a file quarantine bypass in Apple operating systems. Detection would require checking system logs for Gatekeeper bypass attempts or examining files that may have bypassed security checks. Use commands like 'spctl --assess' to verify file integrity and 'log show --predicate' to search for quarantine-related events in system logs.

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Impact Analysis

This vulnerability could allow malicious archives to bypass security checks, potentially leading to unauthorized code execution on your device. This might result in malware installation, data theft, or other malicious activities without your knowledge.

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Compliance Impact

The vulnerability allows an archive to bypass Gatekeeper, which could enable unauthorized code execution or malware persistence on affected systems. This may impact compliance by potentially violating data protection requirements under GDPR (e.g., unauthorized access to personal data) and HIPAA (e.g., unauthorized access to protected health information).

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Mitigation Strategies

Update affected systems to the latest versions: iOS 26.7 or later, iPadOS 26.7 or later, iOS 27 or later, iPadOS 27 or later, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, visionOS 27, or watchOS 27. This addresses the file quarantine bypass issue.

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