CVE-2019-8663 in iOS
Summary
by MITRE
This issue was addressed with improved checks. This issue is fixed in iOS 12.4, macOS Mojave 10.14.6. A remote attacker may be able to leak memory.
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Analysis
by VulDB Data Team • 02/23/2025
The vulnerability identified as CVE-2019-8663 represents a memory disclosure issue that affects Apple's iOS and macOS operating systems. This flaw allows remote attackers to potentially access sensitive memory contents, which could reveal confidential information or system internals. The vulnerability was specifically addressed through enhanced validation mechanisms implemented in Apple's security updates. The issue was resolved in iOS 12.4 and macOS Mojave 10.14.6, demonstrating Apple's proactive approach to mitigating memory-related security concerns in their operating systems.
This memory leak vulnerability falls under the category of information disclosure flaws that can be exploited by remote adversaries without requiring authentication or physical access to the target system. The technical nature of the flaw suggests that improper input validation or memory management practices allowed unauthorized access to memory segments that should have been protected. According to CWE classification, this vulnerability aligns with CWE-200, which covers information exposure, and potentially CWE-125, which addresses out-of-bounds read conditions. The remote exploitation capability places this vulnerability in the ATT&CK framework under the technique T1005, which involves data from local system repositories, though the remote aspect modifies the execution context.
The operational impact of CVE-2019-8663 extends beyond simple information leakage, as memory disclosure can potentially reveal cryptographic keys, user credentials, application data, or system configuration details that could be leveraged in subsequent attacks. Attackers could use the leaked memory information to conduct more sophisticated exploitation attempts, including privilege escalation or targeted attacks against specific applications running on the affected systems. The vulnerability's remote nature makes it particularly concerning as it can be exploited from anywhere on the internet without requiring physical access or network proximity to the target device.
Organizations and individuals should prioritize updating their systems to the patched versions of iOS 12.4 and macOS Mojave 10.14.6 to mitigate this vulnerability. The patch implementation likely involved strengthening input validation routines and improving memory management protocols to prevent unauthorized memory access. System administrators should also consider implementing network monitoring to detect potential exploitation attempts and ensure that all endpoints are properly updated. Additional defensive measures may include network segmentation, firewall rules to limit unnecessary traffic, and regular security assessments to identify similar vulnerabilities in the broader system landscape. The resolution of this vulnerability demonstrates the importance of continuous security updates and the critical role of proper memory management in preventing information disclosure attacks.