CVE-2023-42871 in iOS
Summary
by MITRE • 01/11/2024
The issue was addressed with improved memory handling. This issue is fixed in macOS Sonoma 14, iOS 17 and iPadOS 17. An app may be able to execute arbitrary code with kernel privileges.
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Analysis
by VulDB Data Team • 01/30/2024
This vulnerability represents a critical memory handling flaw that could potentially allow malicious applications to escalate privileges and execute arbitrary code with kernel-level permissions. The issue stems from inadequate memory management controls within the operating system's kernel, creating a pathway for unauthorized code execution that bypasses normal security boundaries. The vulnerability affects multiple Apple operating systems including macOS Sonoma 14, iOS 17, and iPadOS 17, indicating a widespread impact across the Apple ecosystem. From a cybersecurity perspective, this represents a privilege escalation vulnerability that could enable attackers to gain root access to affected systems. The fix implemented by Apple addresses fundamental memory handling mechanisms that are crucial for maintaining system integrity and preventing unauthorized access to kernel space.
The technical nature of this vulnerability aligns with common weakness enumerations such as CWE-129, which deals with improper validation of array indices, and CWE-787, which addresses out-of-bounds write operations. These classifications reflect the underlying memory management issues that could allow an attacker to manipulate kernel memory structures through crafted inputs or application code. The vulnerability operates at the kernel level, making it particularly dangerous as it can bypass traditional user-space security controls and access system resources that should remain protected. Attackers could potentially exploit this flaw by developing malicious applications that leverage the memory handling weakness to gain elevated privileges and execute code with the full authority of the kernel.
The operational impact of this vulnerability is severe and multifaceted across enterprise and consumer environments. Organizations relying on Apple devices for critical operations face significant risk as this vulnerability could enable attackers to compromise entire networks through individual device infections. The kernel privilege escalation capability means that once exploited, attackers could access all system data, modify critical operating system components, and potentially establish persistent backdoors. In enterprise settings, this vulnerability could facilitate lateral movement attacks and data exfiltration campaigns, while consumer users might experience complete device compromise leading to personal data theft and privacy violations. The vulnerability's presence in widely deployed operating systems like iOS 17 and macOS Sonoma 14 amplifies its potential impact across millions of devices.
Mitigation strategies should prioritize immediate deployment of the security updates provided by Apple, which address the underlying memory handling issues in macOS Sonoma 14, iOS 17, and iPadOS 17. Organizations should implement comprehensive patch management processes to ensure all affected devices receive updates promptly. Additional defensive measures include monitoring for suspicious application behavior, implementing application whitelisting policies, and conducting regular security assessments of mobile device environments. Security teams should also consider network-based detection measures to identify potential exploitation attempts and establish incident response procedures for handling potential compromises. From an ATT&CK framework perspective, this vulnerability maps to privilege escalation techniques and could be leveraged in conjunction with other attack vectors to achieve persistent access and data collection objectives. The fix addresses the root cause rather than implementing workarounds, making it essential for organizations to maintain current operating system versions and avoid delaying critical security updates.