CVE-2018-4447 in macOS
Summary
by MITRE
A memory corruption issue was addressed with improved state management. This issue affected versions prior to iOS 12.1.1, macOS Mojave 10.14.2, tvOS 12.1.1, watchOS 5.1.2.
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Analysis
by VulDB Data Team • 04/18/2020
This vulnerability represents a memory corruption flaw that emerged in Apple's operating systems prior to specific security updates. The issue stems from inadequate state management within the affected software components, creating potential pathways for unauthorized system access or arbitrary code execution. The vulnerability affects multiple Apple platforms including iOS, macOS, tvOS, and watchOS, indicating a systemic issue within Apple's underlying architecture that required coordinated patching across all affected versions.
The technical nature of this memory corruption vulnerability aligns with common software security weaknesses that fall under CWE-122, which addresses buffer overflows and memory management issues. Such flaws typically occur when software fails to properly validate or manage memory allocation during program execution, potentially allowing attackers to manipulate system memory in ways that could compromise system integrity. The affected versions demonstrate that this was not a transient issue but rather a persistent flaw that required comprehensive system-level remediation.
The operational impact of this vulnerability extends beyond simple memory corruption, as it could potentially enable attackers to escalate privileges or execute malicious code within the affected systems. The fact that multiple Apple platforms were impacted suggests that the vulnerability existed in shared codebases or common libraries that form the foundation of Apple's ecosystem. Attackers could exploit this weakness to gain unauthorized access to user data, compromise system security, or potentially establish persistent backdoors within the affected devices.
Security professionals should note that this vulnerability required targeted patches across different operating system versions, indicating that Apple's security team identified the flaw during routine code review or security assessment processes. The coordinated release of patches across iOS, macOS, tvOS, and watchOS demonstrates Apple's approach to managing cross-platform vulnerabilities, which aligns with ATT&CK framework concepts related to privilege escalation and execution of malicious code. Organizations should prioritize immediate deployment of the relevant security updates to mitigate potential exploitation risks, as the vulnerability existed in widely used operating systems that could be targeted by various threat actors.
The remediation process for this vulnerability required Apple to implement improved state management protocols throughout their affected software stacks, ensuring that memory allocation and deallocation occurred properly during system operations. This type of fix typically involves code-level modifications to prevent improper memory handling while maintaining system functionality. The security update approach demonstrates Apple's commitment to addressing memory corruption vulnerabilities through comprehensive patching rather than partial workarounds, which aligns with industry best practices for mitigating such fundamental security flaws.