CVE-2018-4419 in macOS
Summary
by MITRE
A memory corruption issue was addressed with improved memory handling. This issue affected versions prior to iOS 12.1, macOS Mojave 10.14.1, tvOS 12.1, watchOS 5.1.
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Analysis
by VulDB Data Team • 07/24/2024
The vulnerability identified as CVE-2018-4419 represents a memory corruption flaw that existed in Apple's operating systems prior to specific security updates. This issue falls under the category of memory safety vulnerabilities that can potentially lead to arbitrary code execution or system instability. The flaw was particularly concerning because it affected multiple Apple platforms including iOS, macOS, tvOS, and watchOS, demonstrating the widespread nature of the memory handling issue. The vulnerability was addressed through improved memory handling mechanisms that prevent the corruption conditions from being exploited.
The technical nature of this memory corruption vulnerability aligns with common CWE categories related to memory management failures and buffer overflows. Such flaws typically arise when software does not properly validate memory operations or fails to handle memory allocation and deallocation correctly. The issue specifically impacted versions before iOS 12.1, macOS Mojave 10.14.1, tvOS 12.1, and watchOS 5.1, indicating that Apple's security team identified and patched the problem in these respective releases. The memory corruption could potentially be exploited by malicious actors to execute arbitrary code or cause system crashes, making it a significant concern for users of affected platforms.
The operational impact of CVE-2018-4419 extends across Apple's ecosystem, affecting millions of devices that were running the vulnerable versions of the operating systems. This type of vulnerability can be particularly dangerous when it enables privilege escalation or allows attackers to bypass security mechanisms. The fact that multiple platforms were affected suggests that the memory handling flaw existed in shared codebases or system components that Apple uses across its various operating systems. Security researchers would have classified this vulnerability based on its potential to be exploited remotely, with the risk increasing if the flaw could be triggered through user interaction or network-based attacks.
Mitigation strategies for this vulnerability required users to update their devices to the patched versions of the respective operating systems. Apple's release notes for iOS 12.1, macOS Mojave 10.14.1, tvOS 12.1, and watchOS 5.1 would have contained detailed information about the memory handling improvements that addressed the issue. Organizations and individuals needed to ensure their devices were updated promptly to avoid potential exploitation. The vulnerability also highlights the importance of regular security updates and the need for robust memory management practices in operating system development. From an ATT&CK framework perspective, this vulnerability could be categorized under privilege escalation techniques or execution methods that leverage memory corruption flaws. The remediation process typically involved applying the official security patches that improved memory allocation handling and prevented the specific corruption patterns that could be exploited by adversaries.