CVE-2017-11818 in Windows
Summary
by MITRE
The Microsoft Windows Storage component on Microsoft Windows 8.1, Windows Server 2012 R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allows a security feature bypass vulnerability when it fails to validate an integrity-level check, aka "Windows Storage Security Feature Bypass Vulnerability".
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Analysis
by VulDB Data Team • 09/10/2024
The vulnerability identified as CVE-2017-11818 represents a critical security feature bypass in Microsoft Windows Storage component that affects multiple operating system versions including Windows 8.1, Windows Server 2012 R2, Windows RT 8.1, Windows 10 versions 1511, 1607, and 1703, as well as Windows Server 2016. This flaw resides within the Windows Storage subsystem's integrity level validation mechanism, creating a pathway for malicious actors to circumvent critical security controls that should prevent unauthorized access to system resources. The vulnerability specifically targets the Windows Storage component's failure to properly validate integrity-level checks, which are fundamental security mechanisms designed to enforce access controls and maintain system security boundaries. This represents a significant weakness in the operating system's security architecture that could allow attackers to bypass essential protection measures.
The technical flaw manifests when the Windows Storage component fails to properly validate integrity levels during access operations, enabling an attacker to exploit this validation gap to perform unauthorized actions that should be restricted by the system's security model. This vulnerability operates at the kernel level within the Windows Storage subsystem, making it particularly dangerous as it can potentially allow privilege escalation and unauthorized access to sensitive system resources. The flaw is categorized under CWE-284, which specifically addresses improper access control, and aligns with ATT&CK technique T1068, which covers local privilege escalation through system exploitation. The vulnerability's nature suggests that it allows attackers to bypass the standard security checks that normally enforce the principle of least privilege, potentially enabling them to access files, registry entries, or system functions that should be restricted based on user or process integrity levels.
The operational impact of this vulnerability extends beyond simple access control bypass, as it can enable attackers to perform actions that could compromise the entire system's integrity and confidentiality. An attacker who successfully exploits this vulnerability could potentially gain elevated privileges, access restricted system resources, or manipulate storage operations in ways that could lead to complete system compromise. The vulnerability affects systems where Windows Storage services are actively running and where integrity checks should be enforced, making it particularly concerning for enterprise environments where these operating systems are commonly deployed. The security feature bypass aspect means that traditional security controls that rely on integrity level validation would be ineffective against an attacker exploiting this vulnerability, undermining the security model's foundational assumptions about access control enforcement.
Mitigation strategies for CVE-2017-11818 should focus on immediate patch deployment through Microsoft's regular security updates, as the vulnerability was addressed in subsequent security releases. Organizations should ensure their Windows systems are updated with the appropriate security patches released by Microsoft, particularly those addressing the Windows Storage component security issues. System administrators should also implement additional monitoring for unauthorized storage access attempts and ensure that integrity level validation mechanisms are properly enforced throughout the system. The vulnerability's impact suggests that organizations should consider implementing additional security controls such as application whitelisting, enhanced monitoring of storage operations, and regular security assessments to detect potential exploitation attempts. Given the nature of the vulnerability, it is crucial that all affected systems receive immediate remediation through official Microsoft security updates to prevent exploitation and maintain system security posture.