CVE-2019-8604 in macOS
Summary
by MITRE
A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Mojave 10.14.5. An application may be able to execute arbitrary code with system privileges.
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Analysis
by VulDB Data Team • 06/07/2024
The memory corruption vulnerability identified as CVE-2019-8604 represents a critical security flaw in Apple's macOS operating system that was resolved through enhanced memory management protocols in macOS Mojave version 10.14.5. This vulnerability falls under the category of memory safety issues that can potentially allow malicious applications to escalate privileges and execute arbitrary code with system-level access. The flaw specifically relates to how the operating system handles memory allocation and deallocation processes, creating opportunities for exploitation that could compromise the entire system integrity.
The technical implementation of this vulnerability stems from inadequate memory handling mechanisms within the kernel or system-level components of macOS. When applications interact with system resources, improper memory management can lead to buffer overflows, use-after-free conditions, or other memory corruption scenarios that adversaries can leverage. According to CWE classification, this vulnerability aligns with CWE-125, which describes out-of-bounds read conditions, and potentially CWE-787, which covers out-of-bounds write operations. The exploitation of such memory corruption flaws typically involves crafting malicious input or code that manipulates memory addresses to redirect execution flow or inject malicious payloads.
The operational impact of CVE-2019-8604 extends beyond simple privilege escalation to encompass potential system compromise and data exfiltration capabilities. An attacker who successfully exploits this vulnerability could gain root access to the affected system, enabling them to install persistent backdoors, modify critical system files, monitor user activities, or establish command and control channels. From an adversary tactics perspective, this vulnerability aligns with ATT&CK technique T1068, which covers local privilege escalation, and T1543, which involves creating or modifying system level persistence. The potential for arbitrary code execution with system privileges makes this vulnerability particularly dangerous in enterprise environments where macOS systems may serve as targets for sophisticated cyber attacks.
Mitigation strategies for CVE-2019-8604 primarily focus on immediate system updates and ongoing security monitoring. Organizations should prioritize deployment of macOS Mojave 10.14.5 or later versions to address the memory handling improvements that resolve this vulnerability. Additionally, implementing robust application whitelisting policies, monitoring for unusual system behavior, and maintaining up-to-date endpoint protection solutions can help detect and prevent exploitation attempts. Security teams should also conduct regular vulnerability assessments and penetration testing to identify potential attack vectors that could leverage similar memory corruption weaknesses. The remediation process should include comprehensive system audits to ensure that no malicious code was installed during potential exploitation windows, particularly focusing on kernel extensions and system-level processes that may have been compromised through this vulnerability.