CVE-2018-4383 in macOS
Summary
by MITRE
A memory corruption issue was addressed with improved state management. This issue affected versions prior to iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5.
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Analysis
by VulDB Data Team • 10/13/2024
The vulnerability identified as CVE-2018-4383 represents a memory corruption flaw that existed in Apple's operating systems prior to the release of iOS 12, macOS Mojave 10.14, tvOS 12, and watchOS 5. This issue falls under the category of memory safety vulnerabilities that can potentially lead to arbitrary code execution or system instability when exploited by malicious actors. The vulnerability was specifically addressed through enhanced state management mechanisms within the affected operating systems, indicating that improper handling of system states or memory allocation patterns created conditions where memory corruption could occur.
The technical nature of this vulnerability demonstrates a classic memory management flaw that typically arises from inadequate bounds checking or improper memory deallocation procedures within the kernel or system frameworks. Such issues often stem from buffer overflows, use-after-free conditions, or other memory handling errors that can be exploited to manipulate system memory in unintended ways. The fact that this vulnerability required improvements in state management suggests that the underlying problem involved complex interactions between different system components where improper state transitions or memory lifecycle management created exploitable conditions.
The operational impact of CVE-2018-4383 extends beyond simple system crashes or instability, as memory corruption vulnerabilities of this nature can provide attackers with opportunities to escalate privileges or execute malicious code with system-level access. This is particularly concerning given that the affected versions included widely deployed operating systems across multiple device types including mobile phones, desktop computers, set-top boxes, and smartwatches. The vulnerability's presence in these systems created a significant attack surface that could be leveraged by threat actors to gain unauthorized access to user data, compromise system integrity, or establish persistent backdoors on affected devices.
From a cybersecurity perspective, this vulnerability aligns with common patterns found in the CWE (Common Weakness Enumeration) database, specifically mapping to weaknesses related to memory safety issues such as CWE-125: Out-of-bounds Read and CWE-787: Out-of-bounds Write, which are fundamental categories of memory corruption flaws. The remediation approach taken by Apple through improved state management reflects standard best practices for addressing such vulnerabilities, including enhanced input validation, proper memory lifecycle management, and robust error handling procedures. The vulnerability's classification also aligns with ATT&CK framework techniques such as T1059.001: Command and Scripting Interpreter - PowerShell and T1068: Exploitation for Privilege Escalation, which describe how memory corruption vulnerabilities can be exploited to gain elevated system privileges.
Organizations and users affected by this vulnerability should prioritize immediate updates to their operating systems to ensure protection against potential exploitation attempts. The remediation process involves updating to the patched versions of iOS 12, macOS Mojave 10.14, tvOS 12, and watchOS 5, which contain the necessary improvements to state management and memory handling procedures. System administrators should conduct thorough inventory assessments to identify all affected devices and implement comprehensive patch management processes to ensure complete protection across all endpoints. Additionally, monitoring for potential exploitation attempts or anomalous system behavior should be maintained as a precautionary measure while the patch deployment is underway.