CVE-2024-27807 in iOS
Summary
by MITRE • 06/11/2024
The issue was addressed with improved checks. This issue is fixed in iOS 16.7.8 and iPadOS 16.7.8, iOS 17.5 and iPadOS 17.5. An app may be able to circumvent App Privacy Report logging.
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Analysis
by VulDB Data Team • 04/03/2026
The vulnerability identified as CVE-2024-27807 represents a significant weakness in the iOS and iPadOS privacy reporting mechanisms that could allow malicious applications to evade detection within the App Privacy Report system. This issue specifically targets the integrity of privacy logging controls that are designed to monitor and report on application data collection practices. The flaw enables an app to potentially bypass the established logging protocols that are meant to provide users and developers with transparent visibility into how applications handle personal data.
The technical nature of this vulnerability stems from insufficient validation mechanisms within the App Privacy Report framework. When applications attempt to log privacy-related activities, the system should maintain strict enforcement of logging requirements to ensure comprehensive coverage of all data access and processing operations. However, the inadequate checks in place allow certain applications to circumvent these logging requirements through methods that exploit gaps in the validation logic. This represents a weakness in the system's access control mechanisms and data integrity controls.
From an operational perspective, this vulnerability undermines the fundamental privacy protections that users expect from iOS and iPadOS environments. The App Privacy Report is designed to provide users with detailed information about how applications access their data, including location, contacts, photos, and other sensitive information. When an app can circumvent this logging, it creates a false sense of security for users who rely on these reports to make informed decisions about their privacy. The impact extends beyond individual user privacy to potentially affect broader data governance practices within organizations that deploy iOS devices.
The fix for CVE-2024-27807 was implemented in iOS 16.7.8 and iPadOS 16.7.8, as well as iOS 17.5 and iPadOS 17.5, demonstrating Apple's recognition of the severity of this privacy reporting vulnerability. This update addresses the root cause by implementing enhanced validation checks that prevent applications from bypassing the privacy logging mechanisms. The mitigation strategy involves strengthening the input validation processes and improving the enforcement of privacy reporting requirements to ensure complete coverage of all application data access activities.
This vulnerability aligns with CWE-693, which covers protection mechanism failures, specifically in the context of privacy controls and data access monitoring. The issue also relates to ATT&CK technique T1566, which involves social engineering tactics that can be employed to bypass security controls. Organizations should consider this vulnerability as part of their broader mobile security posture assessment, particularly in environments where privacy compliance is critical. The fix demonstrates the importance of maintaining robust privacy controls and continuous monitoring of application behavior to prevent unauthorized data access patterns from going undetected.
Security professionals should prioritize updating affected systems to the patched versions to ensure complete protection against this privacy reporting bypass mechanism. The vulnerability highlights the ongoing challenge of maintaining comprehensive privacy controls in mobile operating systems where applications have extensive access to device resources. Regular security assessments and monitoring of privacy reporting systems should be implemented to identify potential bypass mechanisms that could compromise user privacy protections. The remediation process reinforces the need for continuous improvement of privacy controls and validation mechanisms within mobile operating systems.