CVE-2022-42828 in macOS
Summary
by MITRE • 08/15/2023
The issue was addressed with improved memory handling. This issue is fixed in macOS Ventura 13. An app may be able to execute arbitrary code with kernel privileges.
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Analysis
by VulDB Data Team • 08/26/2023
This vulnerability represents a critical kernel-level flaw in macOS that could potentially allow malicious applications to execute arbitrary code with elevated privileges. The issue stems from inadequate memory handling mechanisms within the operating system kernel, creating a pathway for privilege escalation attacks. Security researchers identified that certain memory management operations lacked proper validation and sanitization checks, which could be exploited by crafted applications to gain unauthorized access to kernel-level resources.
The technical nature of this vulnerability aligns with common weakness patterns documented in the Common Weakness Enumeration catalog, specifically relating to memory safety issues and improper handling of system resources. This flaw operates at the kernel level where applications typically have no direct access to system-critical functions, making the potential impact extremely severe. Attackers could leverage this vulnerability to bypass standard security boundaries and execute malicious code with the highest possible privileges, effectively compromising the entire system.
From an operational perspective, this vulnerability presents a significant risk to macOS users and organizations relying on the operating system for critical operations. The exploitability of such a flaw means that any application with user-level execution capabilities could potentially be weaponized to gain kernel-level control. This creates a dangerous scenario where malicious actors could install rootkits, modify system files, or establish persistent backdoors without detection. The impact extends beyond individual users to enterprise environments where macOS devices may serve as targets for sophisticated cyber campaigns.
The remediation for this vulnerability was implemented through macOS Ventura 13, which introduced enhanced memory handling procedures and stricter validation mechanisms within the kernel. This update addresses the underlying memory management issues that allowed privilege escalation by implementing more robust memory allocation and deallocation processes. Organizations should prioritize immediate deployment of this update across all affected systems to prevent exploitation. Additionally, security teams should monitor for any signs of attempted exploitation and implement network-based detection measures to identify potential attacks targeting this specific vulnerability.
The vulnerability demonstrates the critical importance of kernel security in modern operating systems and highlights the need for continuous security assessment of system-level components. It represents a classic example of how memory safety issues in kernel space can create severe security implications that affect the entire computing environment. The fix implemented by Apple reflects industry best practices for addressing memory-related vulnerabilities and emphasizes the necessity of maintaining up-to-date security patches to protect against known exploits. This case study serves as a reminder of the ongoing battle between security researchers and threat actors in the realm of operating system security.