CVE-2019-8683 in iTunes
Summary
by MITRE
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, watchOS 5.3, Safari 12.1.2, iTunes for Windows 12.9.6, iCloud for Windows 7.13, iCloud for Windows 10.6. Processing maliciously crafted web content may lead to arbitrary code execution.
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Analysis
by VulDB Data Team • 11/07/2023
The vulnerability identified as CVE-2019-8683 represents a critical memory corruption issue affecting multiple Apple operating systems and applications. This flaw resides in the memory handling mechanisms of iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, watchOS 5.3, Safari 12.1.2, iTunes for Windows 12.9.6, and iCloud for Windows versions 7.13 and 10.6. The vulnerability stems from inadequate memory management practices that fail to properly validate or sanitize memory operations when processing web content. According to CWE classification, this vulnerability maps to CWE-125: Out-of-bounds Read, which occurs when a program reads data past the end of a valid memory buffer, potentially exposing sensitive information or enabling further exploitation. The memory corruption issues are particularly concerning as they can be triggered through maliciously crafted web content, making them highly accessible to attackers who can leverage these vulnerabilities through web browsers or web-based applications.
The operational impact of CVE-2019-8683 extends beyond simple memory corruption, as it creates a pathway for arbitrary code execution within affected systems. When a user encounters or interacts with maliciously crafted web content, the vulnerable memory handling routines can be manipulated to overwrite critical memory locations or execute unintended code sequences. This arbitrary code execution capability aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter: JavaScript, where attackers can leverage web-based exploits to establish persistent access or escalate privileges within the compromised system. The vulnerability affects not only the web browser components but also the underlying operating system frameworks that handle web content processing, creating a broad attack surface that can be exploited through various vectors including phishing attacks, malicious websites, or compromised web applications.
Security researchers have identified that the root cause of this vulnerability lies in insufficient bounds checking and memory validation during web content rendering processes. The fix implemented by Apple in the respective software updates addresses these memory handling deficiencies through improved input validation and more robust memory allocation routines. Organizations should prioritize immediate deployment of these security updates across all affected systems, as the vulnerability represents a significant risk to enterprise environments where users may encounter malicious web content through legitimate business operations. The remediation process involves updating to the specified versions of iOS, macOS, tvOS, watchOS, Safari, iTunes, and iCloud for Windows, which contain the patched memory handling mechanisms that prevent the exploitation scenarios described in the vulnerability report. This vulnerability demonstrates the critical importance of proper memory management practices and highlights the need for continuous security testing and validation of web content processing frameworks to prevent similar issues from arising in the future.