CVE-2019-8808 in iTunes
Summary
by MITRE
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 13.2 and iPadOS 13.2, tvOS 13.2, watchOS 6.1, Safari 13.0.3, iTunes for Windows 12.10.2. Processing maliciously crafted web content may lead to arbitrary code execution.
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Analysis
by VulDB Data Team • 02/01/2024
The vulnerability identified as CVE-2019-8808 represents a critical memory corruption issue affecting multiple Apple operating systems and applications. This flaw emerged from inadequate memory handling practices within Apple's software ecosystem, specifically impacting iOS 13.1 and earlier versions, iPadOS 13.1 and earlier, tvOS 13.1 and earlier, watchOS 6.0 and earlier, Safari 13.0.2 and earlier, and iTunes for Windows 12.10.1 and earlier. The vulnerability demonstrates the inherent risks associated with improper memory management in complex software systems where buffer overflows or use-after-free conditions can occur when processing untrusted input.
The technical nature of this vulnerability stems from insufficient validation and sanitization of web content, particularly when browsers or applications encounter maliciously crafted HTML, JavaScript, or multimedia elements. When these malformed inputs are processed, the memory corruption can manifest through various mechanisms including stack corruption, heap corruption, or pointer manipulation that ultimately allows attackers to execute arbitrary code on affected systems. This type of vulnerability falls under the CWE-122 category of "Heap-based Buffer Overflow" and aligns with ATT&CK technique T1059.007 for "Command and Scripting Interpreter: JavaScript" as attackers can leverage the memory corruption to inject and execute malicious scripts. The flaw represents a classic example of how memory safety issues can create persistent attack vectors that remain exploitable across multiple platforms and applications within the same software ecosystem.
The operational impact of CVE-2019-8808 extends beyond simple data corruption, as it provides attackers with a pathway to achieve full system compromise through remote code execution. This capability enables threat actors to install persistent backdoors, exfiltrate sensitive data, or establish command and control channels without user interaction. The vulnerability's presence across multiple Apple platforms including mobile operating systems, desktop applications, and web browsers creates an extensive attack surface that can be exploited through various delivery mechanisms such as malicious websites, compromised email attachments, or drive-by downloads. Organizations and individual users face significant risk when systems remain unpatched, as the vulnerability can be exploited in the wild without requiring any user interaction beyond visiting a compromised website, making it particularly dangerous for enterprise environments where users may inadvertently encounter malicious content.
The remediation for CVE-2019-8808 requires immediate deployment of the security updates released by Apple, specifically iOS 13.2, iPadOS 13.2, tvOS 13.2, watchOS 6.1, Safari 13.0.3, and iTunes for Windows 12.10.2. These patches implement improved memory handling mechanisms that include enhanced input validation, stricter memory allocation practices, and additional sanitization routines for web content processing. Security teams should prioritize patch management across all affected platforms and consider implementing network-level protections such as web application firewalls and content filtering solutions as additional defensive measures. The vulnerability also highlights the importance of maintaining up-to-date security patches across all software components, as the interconnected nature of Apple's ecosystem means that exploitation of one vulnerable component can potentially lead to compromise of other systems within the same network environment. Organizations should also implement monitoring solutions to detect potential exploitation attempts and maintain incident response procedures specifically tailored to address memory corruption vulnerabilities that could lead to arbitrary code execution.