CVE-2024-44174 in macOS
Summary
by MITRE • 10/28/2024
The issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15. An attacker may be able to view restricted content from the lock screen.
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Analysis
by VulDB Data Team • 10/28/2024
The vulnerability identified as CVE-2024-44174 represents a security flaw in macOS Sequoia 15 that allows unauthorized access to restricted content when a device is locked. This issue falls under the category of information disclosure vulnerabilities and specifically impacts the lock screen security mechanisms that are fundamental to device protection. The vulnerability exists due to insufficient validation checks that should prevent unauthorized users from accessing sensitive information when the system is in a locked state. Such a flaw represents a significant risk to user privacy and data protection, as it enables potential attackers to bypass the primary security barrier that protects personal information.
The technical implementation of this vulnerability stems from inadequate access controls within the lock screen interface of macOS. When a device is locked, the system should enforce strict permissions that prevent any unauthorized access to applications, notifications, or other sensitive data that might be visible on the screen. The flaw manifests when these protective mechanisms fail to properly validate user authentication status or when the system does not adequately enforce the security boundaries that separate locked and unlocked states. This type of vulnerability is particularly concerning because it directly undermines the core security model of mobile operating systems where the lock screen serves as the primary defense mechanism against unauthorized access.
From an operational perspective, this vulnerability poses serious implications for users who rely on their devices for sensitive information storage and communication. Attackers could potentially exploit this flaw to access emails, messages, calendar entries, photos, and other personal data without proper authentication. The impact extends beyond individual privacy concerns to potential corporate data breaches when employees use company devices that may contain confidential business information. The vulnerability's exploitation does not require sophisticated techniques or specialized tools, making it particularly dangerous as it can be leveraged by threat actors with minimal technical expertise. This flaw directly violates the principle of least privilege and weakens the overall security posture of affected systems.
The fix implemented in macOS Sequoia 15 addresses this vulnerability through enhanced validation checks that strengthen the lock screen security mechanisms. These improvements likely include tighter enforcement of authentication requirements, better isolation of restricted content, and more robust access controls that prevent unauthorized viewing of sensitive information. The remediation approach aligns with security best practices that emphasize defense in depth and proper access control implementation. Organizations should prioritize updating to the patched version of macOS to ensure their systems are protected against this specific threat vector. The fix demonstrates the importance of continuous security monitoring and timely patch deployment in maintaining effective security controls. This vulnerability and its resolution highlight the ongoing challenges in securing modern operating systems where complex interactions between various components can create unexpected security gaps. The issue relates to CWE-284 which describes improper access control, and aligns with ATT&CK technique T1562.001 which involves disabling or modifying system security tools, as unauthorized access to locked systems represents a fundamental breach of system security controls.