CVE-2018-4384 in watchOS
Summary
by MITRE
A memory corruption issue was addressed with improved input validation. This issue affected versions prior to iOS 12.1, watchOS 5.1.
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Analysis
by VulDB Data Team • 10/19/2024
The vulnerability identified as CVE-2018-4384 represents a memory corruption flaw that existed in Apple's iOS and watchOS operating systems prior to their respective version updates. This type of vulnerability falls under the category of memory safety issues that can potentially allow attackers to execute arbitrary code or cause system instability. The flaw was specifically addressed through enhanced input validation mechanisms, indicating that the vulnerability likely stemmed from insufficient sanitization of user-supplied data or system inputs that could lead to improper memory handling.
The technical nature of this memory corruption issue demonstrates how improper input validation can create exploitable conditions within system frameworks. When applications or system components fail to properly validate input parameters, they may inadvertently process malformed data that can overwrite memory locations or corrupt heap structures. This particular vulnerability affected iOS versions prior to 12.1 and watchOS versions prior to 5.1, suggesting that the flaw was present in the underlying system libraries or frameworks that handle input processing for various applications and system services. The memory corruption could potentially be triggered through crafted inputs that exploit the insufficient validation mechanisms.
From an operational perspective, this vulnerability posed significant risks to affected systems as memory corruption issues can lead to system crashes, application instability, or more critically, provide attackers with opportunities to execute malicious code. The impact extends beyond simple system crashes since memory corruption vulnerabilities often serve as entry points for more sophisticated attacks that could compromise user data or system integrity. Attackers could potentially leverage this flaw to gain elevated privileges or execute unauthorized operations within the system boundaries, making it a critical concern for organizations and individual users relying on affected Apple devices.
The remediation for CVE-2018-4384 involved implementing improved input validation procedures that ensure all system inputs are properly sanitized before processing. This approach aligns with established security practices and follows the principle of least privilege by ensuring that only valid, expected inputs are processed by system components. Organizations should prioritize updating affected systems to iOS 12.1 or later and watchOS 5.1 or later to mitigate this vulnerability. The fix demonstrates Apple's commitment to addressing memory safety issues through proactive security measures and highlights the importance of maintaining up-to-date system software to protect against known vulnerabilities.
This vulnerability type relates to CWE-121 which describes stack-based buffer overflow conditions, and CWE-122 which covers heap-based buffer overflow scenarios. The remediation approach through input validation aligns with defensive programming practices recommended in the software security community and supports the broader security framework established by industry standards. The ATT&CK framework would categorize this vulnerability under techniques involving memory corruption and privilege escalation, potentially enabling adversaries to move laterally within affected systems or maintain persistent access through exploitation of such fundamental system flaws.