CVE-2022-22669 in macOS
Summary
by MITRE • 03/18/2022
A use after free issue was addressed with improved memory management. This issue is fixed in macOS Monterey 12.3. An application may be able to execute arbitrary code with kernel privileges.
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Analysis
by VulDB Data Team • 03/18/2022
This vulnerability represents a critical use-after-free condition that was successfully mitigated through enhanced memory management protocols in macOS Monterey version 12.3. The flaw emerged from improper handling of memory allocation and deallocation processes within the kernel space, creating opportunities for malicious applications to exploit dangling pointers that remained accessible after their associated memory regions had been freed. Such vulnerabilities typically arise when software continues to reference memory locations that have already been returned to the system's memory pool, potentially allowing attackers to manipulate or corrupt data structures that should no longer be accessible.
The technical nature of this issue places it firmly within the domain of CWE-416, which specifically addresses use-after-free vulnerabilities where program code references memory after it has been freed. The exploitation mechanism likely involves crafting malicious payloads that can leverage the freed memory locations to inject or manipulate kernel-level code, ultimately enabling privilege escalation from user-space applications to full kernel privileges. This type of vulnerability is particularly dangerous because it operates at the core level of system security, bypassing traditional user-mode protections and allowing for complete system compromise.
The operational impact of this vulnerability extends far beyond simple application crashes or data corruption, as it provides attackers with the capability to execute arbitrary code with the highest possible system privileges. This means that any application capable of triggering the use-after-free condition could potentially gain root access, enabling complete control over the affected system including the ability to modify system files, install persistent backdoors, monitor user activities, and exfiltrate sensitive data. The implications for enterprise security are severe as such vulnerabilities can be leveraged for advanced persistent threats that remain undetected while maintaining long-term access to compromised systems.
Organizations should prioritize immediate deployment of macOS Monterey 12.3 updates to address this vulnerability, as the use-after-free condition represents a significant risk vector that can be exploited by both sophisticated attackers and automated malware. Security teams should also implement monitoring for suspicious kernel-level activity and maintain comprehensive system integrity verification processes. The mitigation strategy should include regular patch management protocols, enhanced application sandboxing measures, and continuous security assessments of system configurations to prevent exploitation attempts. Additionally, implementing network-based intrusion detection systems can help identify potential exploitation attempts through anomalous kernel access patterns or unusual privilege escalation behaviors that may indicate successful exploitation of similar vulnerabilities.
This vulnerability aligns with several tactics described in the attack framework, particularly those involving privilege escalation and persistence mechanisms that enable attackers to maintain control over compromised systems. The remediation approach emphasizes the importance of proper memory management practices within kernel-space code development and highlights the necessity of thorough security testing for system-level components before deployment in production environments.