CVE-2022-48618 in macOS
Summary
by MITRE • 01/09/2024
The issue was addressed with improved checks. This issue is fixed in macOS Ventura 13.1, watchOS 9.2, iOS 16.2 and iPadOS 16.2, tvOS 16.2. An attacker with arbitrary read and write capability may be able to bypass Pointer Authentication. Apple is aware of a report that this issue may have been exploited against versions of iOS released before iOS 15.7.1.
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Analysis
by VulDB Data Team • 09/29/2024
The vulnerability identified as CVE-2022-48618 represents a critical security flaw in Apple's operating systems that specifically targets pointer authentication mechanisms designed to protect against code injection and arbitrary code execution attacks. This issue affects multiple Apple platforms including iOS, iPadOS, watchOS, and tvOS, with the vulnerability being addressed through comprehensive security updates released in versions 13.1, 9.2, 16.2, and 16.2 respectively. The flaw demonstrates a significant weakness in the system's memory protection architecture that could potentially allow sophisticated attackers to circumvent critical security controls.
The technical nature of this vulnerability stems from inadequate validation mechanisms within the pointer authentication system that Apple employs to verify the authenticity of pointers used in memory management operations. Pointer authentication serves as a crucial defense mechanism against return-oriented programming attacks and other memory corruption exploits by ensuring that pointers have not been tampered with during execution. When this protection is bypassed, attackers gain the ability to manipulate pointer values in ways that would normally be prevented, effectively undermining the security boundaries that protect system integrity.
The operational impact of CVE-2022-48618 extends beyond simple privilege escalation, as it represents a fundamental weakness in Apple's security architecture that could enable attackers to execute arbitrary code with elevated privileges. This vulnerability particularly affects systems running versions prior to iOS 15.7.1, indicating that attackers may have exploited this weakness in the wild against older systems. The fact that Apple has acknowledged reports of active exploitation against pre-iOS 15.7.1 versions suggests that this vulnerability represents a significant threat vector that could be used to compromise user devices and potentially access sensitive data or establish persistent access to target systems.
Security researchers have classified this issue under CWE-697, which addresses "Incorrect Comparison" in software systems, as the vulnerability likely stems from improper validation of pointer authentication codes during memory operations. The attack surface for this vulnerability aligns with ATT&CK technique T1059.007 for "Command and Scripting Interpreter: JavaScript' and T1068 for 'Exploitation for Privilege Escalation' within the MITRE ATT&CK framework. Organizations and users must prioritize immediate deployment of the security updates to mitigate the risk of exploitation, as the vulnerability creates pathways for attackers to bypass multiple layers of security protection that are fundamental to modern operating system security models.
The remediation approach for this vulnerability requires comprehensive system updates across all affected platforms, with particular attention to ensuring that all devices running iOS versions prior to 15.7.1 receive immediate updates. System administrators should also conduct thorough vulnerability assessments to identify any potentially compromised systems that may have been targeted before the patch was released. The fix implemented by Apple addresses the root cause by strengthening the validation checks for pointer authentication codes, ensuring that any modifications to pointer values are properly verified before being accepted by the system's memory management subsystem. This update represents a critical step in maintaining the security posture of Apple's ecosystem against advanced persistent threats that specifically target memory corruption vulnerabilities.