CVE-2018-0963 in Windows
Summary
by MITRE
An elevation of privilege vulnerability exists in the way that the Windows Kernel handles objects in memory, aka "Windows Kernel Elevation of Privilege Vulnerability." This affects Windows Server 2016, Windows 10, Windows 10 Servers.
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Analysis
by VulDB Data Team • 02/09/2021
The vulnerability identified as CVE-2018-0963 represents a critical elevation of privilege flaw within the Windows kernel component that enables attackers to escalate their privileges from standard user level to system level. This weakness specifically manifests in how the kernel manages memory objects, creating a pathway for malicious actors to bypass security controls and gain unauthorized administrative access to affected systems. The vulnerability affects multiple Windows operating systems including Windows Server 2016, Windows 10, and Windows 10 Servers, making it particularly concerning given the widespread deployment of these platforms in enterprise environments. The issue stems from improper handling of kernel objects in memory, which creates opportunities for privilege escalation through carefully crafted malicious code execution.
This vulnerability operates at the kernel level, which is the core component of the operating system responsible for managing system resources and enforcing security policies. The flaw allows an unprivileged user to manipulate kernel objects in memory through specific exploitation techniques that leverage memory management functions. The technical implementation involves manipulating kernel data structures and object references in ways that should not be possible under normal security constraints. According to CWE classification, this vulnerability maps to CWE-264, which addresses permissions, privileges, and access controls within kernel components. The exploitation typically requires the attacker to have local user access and execute malicious code that can manipulate kernel memory objects to achieve privilege escalation.
The operational impact of CVE-2018-0963 is severe as it can lead to complete system compromise when successfully exploited. An attacker who gains system-level privileges can perform actions such as installing malware, modifying system files, accessing sensitive data, and creating persistent backdoors. The vulnerability can be particularly dangerous in enterprise environments where it may provide attackers with access to critical infrastructure and sensitive organizational data. The attack surface extends beyond individual systems to potentially enable lateral movement within networks, as system compromise often provides attackers with elevated privileges needed to access other systems. From an ATT&CK framework perspective, this vulnerability maps to privilege escalation techniques under the T1068 category, specifically targeting kernel exploits for system-level access.
Mitigation strategies for CVE-2018-0963 primarily involve applying Microsoft security patches and updates released in the May 2018 security updates. Organizations should prioritize patch deployment across all affected Windows systems, particularly those running Windows Server 2016, Windows 10, and Windows 10 Servers. System administrators should implement network segmentation and access controls to limit potential attack vectors and reduce the impact of successful exploitation attempts. Additional defensive measures include monitoring for unusual system behavior, implementing application whitelisting policies, and maintaining robust endpoint detection and response capabilities. The vulnerability also highlights the importance of regular security assessments and vulnerability management programs to identify and remediate similar kernel-level weaknesses before they can be exploited by threat actors. Organizations should consider implementing additional security controls such as kernel-mode driver protection and enhanced monitoring of kernel object manipulation activities to detect potential exploitation attempts.