CVE-2019-8611 in iTunes
Summary
by MITRE
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, Safari 12.1.1, iTunes for Windows 12.9.5, iCloud for Windows 7.12. Processing maliciously crafted web content may lead to arbitrary code execution.
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Analysis
by VulDB Data Team • 01/18/2025
The vulnerability identified as CVE-2019-8611 represents a critical memory corruption issue that affected multiple Apple operating systems and applications. This flaw emerged from inadequate memory handling practices within Apple's software ecosystem, specifically impacting iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, Safari 12.1.1, iTunes for Windows 12.9.5, and iCloud for Windows 7.12. The vulnerability stems from insufficient validation and management of memory resources when processing web content, creating potential entry points for malicious actors to exploit system weaknesses. The issue falls under the category of memory corruption vulnerabilities, which are particularly dangerous as they can lead to complete system compromise when successfully exploited.
The technical nature of this vulnerability involves improper memory management during web content rendering processes, particularly within the Safari browser engine and related webkit components. When users encounter maliciously crafted web content, the flawed memory handling can cause buffer overflows, use-after-free conditions, or other memory corruption scenarios that allow attackers to manipulate program execution flow. These memory corruption issues are classified as CWE-122 (Heap-based Buffer Overflow) and CWE-416 (Use After Free) according to the Common Weakness Enumeration catalog. The exploitation mechanism typically involves crafting specially designed web pages or content that triggers the memory corruption when rendered by the vulnerable applications, potentially enabling attackers to execute arbitrary code with the privileges of the affected application.
The operational impact of CVE-2019-8611 extends across multiple attack vectors and user environments, making it particularly concerning for enterprise and individual security postures. Attackers could leverage this vulnerability through phishing campaigns, malicious websites, or compromised web services to deliver payloads that exploit the memory corruption. The vulnerability affects not only web browsing but also file synchronization through iCloud and media management through iTunes, expanding the potential attack surface significantly. Organizations relying on Apple products for business operations face increased risk of unauthorized access, data exfiltration, and system compromise. According to ATT&CK framework, this vulnerability maps to techniques such as T1059 (Command and Scripting Interpreter) and T1071 (Application Layer Protocol) as attackers could use the arbitrary code execution capability to establish persistent access or escalate privileges within compromised systems.
Mitigation strategies for CVE-2019-8611 primarily focus on immediate patch deployment and enhanced security monitoring. Organizations should prioritize updating all affected systems to the patched versions including iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, Safari 12.1.1, iTunes for Windows 12.9.5, and iCloud for Windows 7.12. Additionally, implementing network-level protections such as web content filtering, DNS-based security measures, and monitoring for suspicious web traffic can help detect and prevent exploitation attempts. Security teams should also consider implementing application whitelisting policies to restrict execution of untrusted web content and maintain comprehensive logging of browser activities. Regular security assessments and vulnerability scanning should be conducted to identify any remaining unpatched systems within the organization's infrastructure, as the vulnerability's exploitation potential remains high until all affected components are properly updated and verified.