CVE-2018-8313 in Windows
Summary
by MITRE
An elevation of privilege vulnerability exists in the way that the Windows Kernel API enforces permissions, aka "Windows Elevation of Privilege Vulnerability." This affects Windows Server 2012 R2, Windows RT 8.1, Windows Server 2012, Windows Server 2016, Windows 8.1, Windows 10, Windows 10 Servers. This CVE ID is unique from CVE-2018-8314.
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Analysis
by VulDB Data Team • 04/05/2023
The vulnerability identified as CVE-2018-8313 represents a critical elevation of privilege flaw within the Windows kernel API permission enforcement mechanisms. This vulnerability stems from improper validation of access control checks within the kernel mode components that govern system resource access and privilege boundaries. The flaw allows malicious actors to bypass intended security restrictions and escalate their privileges from standard user level to administrative or SYSTEM level access, fundamentally undermining the operating system's security model.
This vulnerability specifically affects multiple Windows operating system versions including Windows Server 2012 R2, Windows RT 8.1, Windows Server 2012, Windows Server 2016, Windows 8.1, and various Windows 10 releases. The issue resides in the kernel API implementation where insufficient validation occurs during privilege checking operations, creating a path for unauthorized code execution with elevated privileges. The vulnerability's impact is particularly severe as it enables attackers to gain complete system control without requiring physical access or prior authentication.
The technical exploitation of CVE-2018-8313 typically involves crafting malicious code that leverages the kernel API permission bypass to perform operations that should be restricted to privileged users only. Attackers can utilize this vulnerability to install rootkits, modify system files, access sensitive data, or establish persistent backdoors within the compromised system. The vulnerability's classification aligns with CWE-276, which describes improper privilege management, and maps to ATT&CK technique T1068, which covers local privilege escalation through kernel exploits.
The operational impact extends beyond individual system compromise to potentially affect entire network infrastructures, as successful exploitation can provide attackers with SYSTEM-level access to critical servers and workstations. Organizations running affected Windows versions face significant risk of data breaches, system infiltration, and lateral movement within their networks. The vulnerability's exploitation typically requires minimal user interaction, making it particularly dangerous in environments where users have standard accounts with limited privileges.
Mitigation strategies for CVE-2018-8313 primarily involve applying the official Microsoft security patches released in August 2018 as part of the Windows security update cycle. System administrators should prioritize patch deployment across all affected Windows versions, particularly critical infrastructure servers and workstations. Additional protective measures include implementing strict access controls, monitoring for unusual privilege escalation attempts, and maintaining up-to-date endpoint protection solutions. Network segmentation and privilege separation can help limit the potential damage from successful exploitation, while regular security audits should verify that systems remain properly patched and configured according to security best practices.