CVE-2019-8602 in iTunes
Summary
by MITRE
A memory corruption issue was addressed by removing the vulnerable code. This issue is fixed in iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, watchOS 5.2.1, iTunes for Windows 12.9.5, iCloud for Windows 7.12. A malicious application may be able to elevate privileges.
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Analysis
by VulDB Data Team • 09/26/2023
The vulnerability identified as CVE-2019-8602 represents a critical memory corruption flaw that existed within Apple's operating systems and applications. This issue was particularly concerning because it provided a potential pathway for privilege escalation, allowing a malicious application to gain elevated system privileges that would normally be restricted to authorized processes. The vulnerability stemmed from improper memory handling within Apple's software ecosystem, creating a condition where memory corruption could occur during normal application execution or system operations.
The technical nature of this vulnerability aligns with common memory safety issues that fall under CWE-121, which describes heap-based buffer overflow conditions, and CWE-125, which covers out-of-bounds read vulnerabilities. These classifications indicate that the flaw likely involved improper bounds checking during memory allocation or access operations, potentially allowing attackers to manipulate memory layout or overwrite critical system structures. The vulnerability was present across multiple Apple platforms including iOS, macOS, tvOS, and watchOS, suggesting it originated from shared codebases or common system libraries that were utilized across these operating environments.
The operational impact of CVE-2019-8602 was significant as it created a vector for sophisticated attacks that could bypass standard security controls. Attackers could potentially exploit this vulnerability by crafting malicious applications that would trigger the memory corruption condition, subsequently gaining elevated privileges to perform actions that would normally be restricted. This could include accessing sensitive system resources, modifying protected files, or executing arbitrary code with system-level permissions. The vulnerability's presence across multiple platforms meant that attackers could potentially leverage it across different Apple ecosystems, increasing the attack surface and potential impact.
Apple's response to this vulnerability involved removing the vulnerable code rather than attempting to patch or modify the existing implementation. This approach reflects a defensive security strategy where the risk of exploitation outweighed the potential benefits of maintaining the functionality that introduced the vulnerability. The fix was implemented across multiple software versions including iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, watchOS 5.2.1, iTunes for Windows 12.9.5, and iCloud for Windows 7.12, demonstrating Apple's comprehensive approach to addressing the issue across their entire software portfolio. This remediation strategy aligns with ATT&CK technique T1068, which covers exploit for privilege escalation, as the vulnerability removal effectively eliminated the attack vector that could be used to escalate privileges.
The mitigation approach taken by Apple highlights the importance of proactive vulnerability management and the recognition that some code patterns may introduce fundamental security risks that cannot be adequately addressed through traditional patching approaches. This vulnerability serves as an example of why organizations should maintain robust patch management processes and why security researchers should conduct thorough code reviews to identify potential memory safety issues before they can be exploited in the wild. The removal of the vulnerable code represents a complete solution that eliminates the attack surface rather than attempting to contain or limit the vulnerability through partial fixes that might leave residual risks.