CVE-2018-4411 in macOS
Summary
by MITRE
A memory corruption issue was addressed with improved input validation. This issue affected versions prior to macOS Mojave 10.14.
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Analysis
by VulDB Data Team • 04/08/2020
The vulnerability identified as CVE-2018-4411 represents a memory corruption flaw that existed in macOS versions prior to Mojave 10.14. This type of vulnerability falls under the category of memory safety issues that can potentially lead to arbitrary code execution or system instability. The flaw was specifically addressed through enhanced input validation mechanisms implemented by Apple in their operating system updates. The vulnerability demonstrates the critical importance of proper memory management and input sanitization in preventing exploitation by malicious actors.
Technical analysis reveals that this memory corruption issue likely stemmed from insufficient validation of user-supplied data or system inputs within macOS kernel components. The vulnerability allowed for potential buffer overflows or heap corruption scenarios that could be exploited to execute arbitrary code with elevated privileges. According to CWE classification, this vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions, or CWE-122, which covers heap-based buffer overflow conditions. The root cause was the absence of proper bounds checking and input validation routines that should have prevented malformed data from corrupting memory structures.
The operational impact of CVE-2018-4411 extends beyond simple system instability, as memory corruption vulnerabilities can enable attackers to gain unauthorized access to system resources and potentially escalate privileges. Attackers could exploit this vulnerability to execute malicious code with kernel-level privileges, effectively compromising the entire system. The issue affected all macOS versions prior to 10.14, making it particularly dangerous as it impacted a significant user base. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and execution of malicious code through kernel exploits, specifically falling under the T1068 privilege escalation technique.
Organizations and users affected by this vulnerability should prioritize immediate remediation through official macOS updates. Apple released security patches in macOS Mojave 10.14 that addressed this memory corruption issue through enhanced input validation and memory management routines. System administrators should implement comprehensive patch management procedures to ensure all affected systems receive updates promptly. The vulnerability highlights the necessity of maintaining current operating system versions and implementing robust security monitoring to detect potential exploitation attempts. Additionally, organizations should consider implementing network segmentation and access controls to limit potential attack surface and reduce the impact of such vulnerabilities. Regular security assessments and vulnerability scanning should be conducted to identify and remediate similar issues before they can be exploited by threat actors.