CVE-2018-4385 in iOS
Summary
by MITRE
A logic issue was addressed with improved state management. This issue affected versions prior to iOS 12.1.
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Analysis
by VulDB Data Team • 04/08/2020
The vulnerability identified as CVE-2018-4385 represents a logic flaw in Apple's iOS operating system that was resolved through enhanced state management protocols. This issue specifically impacted devices running iOS versions prior to the release of iOS 12.1, indicating that the vulnerability stemmed from insufficient handling of application states and system transitions within the mobile operating environment. The flaw likely manifested in scenarios where the system failed to properly maintain or transition between different operational states, potentially creating exploitable conditions that could be leveraged by malicious actors.
The technical nature of this vulnerability aligns with common software logic errors that occur when developers fail to account for all possible state transitions within their applications or operating systems. Such issues typically arise when the software does not adequately validate or manage the sequence of operations that occur during system interactions, leading to potential inconsistencies in how the system behaves under various conditions. The fix implemented by Apple through improved state management suggests that the vulnerability involved scenarios where the operating system's internal state tracking mechanisms were insufficiently robust to handle concurrent or sequential operations properly.
From an operational impact perspective, this vulnerability could have enabled attackers to exploit the inconsistent state handling to perform unauthorized actions or gain elevated privileges within the iOS environment. The fact that it affected versions prior to iOS 12.1 indicates that it was a significant enough concern to warrant immediate attention, as mobile operating systems are increasingly targeted for exploitation due to their privileged access to user data and device resources. The vulnerability likely created opportunities for persistent threats to maintain access or escalate privileges within the mobile ecosystem, given that iOS devices typically contain sensitive personal and corporate information.
The remediation approach taken by Apple involved strengthening the state management protocols within the iOS operating system, which would have required modifications to how the system tracks application states, manages memory allocation, and handles system transitions between different operational modes. This type of fix typically involves implementing more rigorous validation checks and ensuring that all possible state transitions are properly accounted for in the system's operational logic. Organizations should have immediately deployed iOS 12.1 updates to address this vulnerability, as the logic flaw could have been exploited to compromise device security and user privacy.
This vulnerability demonstrates the critical importance of proper state management in operating system design and aligns with common cybersecurity principles outlined in industry standards such as the CWE (Common Weakness Enumeration) catalog, which categorizes such issues under weaknesses related to improper handling of application states. The remediation approach also reflects techniques commonly recommended in the MITRE ATT&CK framework for operating system security, particularly those related to privilege escalation and persistence mechanisms that could be exploited through logical flaws in system behavior. Organizations should prioritize maintaining up-to-date mobile device security protocols to prevent exploitation of similar logic-based vulnerabilities that could compromise mobile device integrity and user data confidentiality.