CVE-2019-8562 in iTunes
Summary
by MITRE
A memory corruption issue was addressed with improved validation. This issue is fixed in iOS 12.2, tvOS 12.2, Safari 12.1, iTunes 12.9.4 for Windows. A sandboxed process may be able to circumvent sandbox restrictions.
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Analysis
by VulDB Data Team • 08/08/2023
The vulnerability identified as CVE-2019-8562 represents a memory corruption issue that affects multiple Apple operating systems including iOS 12.1 and earlier versions, tvOS 12.1 and earlier versions, and Safari 12.0 and earlier versions. This flaw resides within Apple's sandboxing mechanisms and specifically targets the validation processes that govern how applications interact with system resources. The issue stems from insufficient input validation within sandboxed processes, creating a potential pathway for privilege escalation attacks. According to Apple's security advisory, the vulnerability was addressed through improved validation mechanisms that strengthen the boundaries of sandboxed applications and their access to system resources.
The technical nature of this vulnerability places it within the domain of CWE-122, which describes buffer overflow conditions that can lead to memory corruption and arbitrary code execution. The flaw allows a sandboxed process to potentially circumvent sandbox restrictions, effectively breaking down the security boundaries that normally isolate applications from each other and from the core operating system. This memory corruption issue manifests when applications attempt to manipulate memory in ways that violate established validation protocols. The vulnerability is particularly concerning because it affects the fundamental security model of Apple's operating systems, where sandboxing serves as a primary defense mechanism against malicious software and unauthorized system access. The issue impacts both iOS and tvOS platforms, suggesting that it operates at a low-level system component that affects the entire operating environment rather than being limited to specific applications or services.
The operational impact of CVE-2019-8562 extends beyond simple memory corruption, as it represents a potential gateway for attackers to escalate privileges and gain unauthorized access to system resources. When a sandboxed process can circumvent restrictions, it opens the possibility for attackers to execute malicious code with elevated privileges, potentially leading to complete system compromise. This vulnerability aligns with tactics described in the ATT&CK framework under privilege escalation and defense evasion techniques, where adversaries seek to bypass application sandboxing and access restricted system components. The fact that this issue affects Safari 12.1 and iTunes 12.9.4 for Windows indicates that it may be related to web browsing components or network protocols that handle user input. The vulnerability's presence in multiple platforms suggests it may be rooted in shared kernel components or common libraries that provide the foundation for sandboxing and memory management across Apple's ecosystem.
Mitigation strategies for CVE-2019-8562 focus primarily on updating to the patched versions mentioned in Apple's security advisory. Users should immediately upgrade to iOS 12.2, tvOS 12.2, Safari 12.1, or iTunes 12.9.4 for Windows to address the memory corruption vulnerability. Organizations should implement comprehensive patch management policies that ensure all Apple devices within their environment receive timely updates. Security teams should monitor for any attempts to exploit this vulnerability through network traffic analysis or endpoint detection and response systems. The fix implemented by Apple addresses the root cause by strengthening validation mechanisms within sandboxed processes, ensuring that memory operations remain within established boundaries. Additionally, administrators should consider implementing additional security controls such as network segmentation and application whitelisting to provide defense in depth against potential exploitation attempts. The vulnerability's resolution demonstrates Apple's ongoing commitment to improving sandbox security models and protecting users from sophisticated attacks that target fundamental operating system components.