CVE-2019-8752 in iTunes
Summary
by MITRE • 10/28/2020
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in Safari 13.0.1, iOS 13.1 and iPadOS 13.1, iCloud for Windows 10.7, iCloud for Windows 7.14, tvOS 13, watchOS 6, iTunes 12.10.1 for Windows. Processing maliciously crafted web content may lead to arbitrary code execution.
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Analysis
by VulDB Data Team • 11/28/2020
The vulnerability identified as CVE-2019-8752 represents a critical memory corruption issue affecting Apple's ecosystem across multiple platforms including Safari web browser, iOS, iPadOS, tvOS, watchOS, and various iCloud implementations. This flaw demonstrates the complexity of modern software security where memory handling errors can create pathways for sophisticated exploitation. The vulnerability specifically manifests when processing maliciously crafted web content, indicating that the issue exists within the browser's rendering engine or web content processing pipeline. The memory corruption vulnerabilities typically arise from improper memory management practices such as buffer overflows, use-after-free conditions, or heap corruption scenarios that can be triggered by malformed input data. These types of issues fall under the broader category of memory safety vulnerabilities that have been extensively documented in industry standards including CWE-122, which addresses heap-based buffer overflow conditions, and CWE-416, which covers use-after-free errors. The exploitation of such vulnerabilities often aligns with ATT&CK technique T1203, which involves exploiting software vulnerabilities to gain unauthorized access or execute arbitrary code.
The technical nature of this vulnerability suggests that attackers could craft malicious web pages or content that, when loaded in affected browsers or applications, would trigger memory corruption conditions. This could potentially lead to arbitrary code execution, allowing threat actors to gain full control over affected systems. The memory corruption issues typically occur when the application fails to properly validate or sanitize input data before processing it in memory, creating opportunities for attackers to manipulate memory layout and execution flow. The fix implemented by Apple in versions including Safari 13.0.1, iOS 13.1, and corresponding updates across their ecosystem demonstrates the company's recognition of the severity of the issue. The remediation approach involved improving memory handling mechanisms, which likely includes implementing better bounds checking, memory allocation validation, and improved garbage collection practices. These improvements align with defensive programming principles and security hardening techniques that are fundamental to preventing memory corruption attacks.
The operational impact of CVE-2019-8752 extends beyond individual user devices to encompass enterprise environments where Apple products are extensively deployed. Organizations that rely on Safari for web browsing, or use Apple's ecosystem for business operations, face potential security risks from this vulnerability. The widespread nature of the affected platforms means that organizations must ensure comprehensive patch management across all Apple devices, including desktop computers, mobile devices, and embedded systems. The vulnerability's potential for arbitrary code execution makes it particularly dangerous as it could enable attackers to install malware, steal sensitive data, or establish persistent access to compromised systems. Security teams must consider the implications of this vulnerability when assessing their overall security posture and implementing defense-in-depth strategies. The fix distribution across multiple platforms including Windows versions of iCloud indicates that Apple's approach to addressing this vulnerability was comprehensive and cross-platform in scope. This demonstrates the interconnected nature of modern software ecosystems where vulnerabilities in one component can affect multiple platforms and applications within the same vendor's ecosystem. The remediation efforts required from organizations include not only updating software but also potentially implementing additional monitoring and detection measures to identify potential exploitation attempts.