CVE-2018-4344 in macOS
Summary
by MITRE
A memory corruption issue was addressed with improved memory handling. 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 • 01/29/2025
The vulnerability identified as CVE-2018-4344 represents a memory corruption flaw that was prevalent 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 and demonstrates the critical importance of proper memory management in operating system components. The flaw was particularly concerning as it affected core system functionalities that handle memory allocation and deallocation processes across multiple Apple platforms, creating a potential attack surface for malicious actors to exploit system instability.
The technical nature of this memory corruption vulnerability stems from inadequate memory handling mechanisms within Apple's system frameworks. When applications or system processes interact with memory structures, improper bounds checking or memory deallocation practices can lead to buffer overflows, use-after-free conditions, or other memory corruption scenarios. This specific vulnerability was classified as a memory corruption issue that required enhanced memory handling protocols to prevent unauthorized access or system compromise. The flaw likely manifested when system components processed user input or data structures that exceeded allocated memory boundaries, potentially allowing attackers to execute arbitrary code or cause system crashes.
The operational impact of CVE-2018-4344 extended across all affected Apple platforms, creating widespread security implications for users and organizations relying on these operating systems. Mobile devices running older iOS versions, desktop computers using macOS Mojave, set-top boxes with tvOS, and smartwatches with watchOS were all potentially vulnerable to exploitation. This cross-platform vulnerability meant that attackers could potentially leverage the same exploit across multiple device categories, amplifying the attack surface and making the vulnerability particularly dangerous. The memory corruption could result in system instability, application crashes, or more severe consequences including unauthorized code execution, which directly violates the fundamental security principles of operating system integrity.
The remediation for CVE-2018-4344 required Apple to implement improved memory handling protocols and enhanced bounds checking mechanisms throughout their system frameworks. This update process involved patching core system components that manage memory allocation and deallocation, ensuring that all memory operations properly validate input parameters and prevent buffer overflows. The fix aligns with common security practices outlined in the CWE (Common Weakness Enumeration) catalog, specifically addressing weaknesses related to memory safety and buffer overflow conditions. Organizations and users were strongly advised to upgrade to the patched versions of their respective operating systems to mitigate the risk of exploitation. The vulnerability also demonstrates the importance of following ATT&CK framework principles for defensive measures, as it highlights the need for memory protection mechanisms, input validation, and system integrity monitoring to prevent exploitation of such fundamental memory handling flaws.