CVE-2018-0971 in Windows
Summary
by MITRE
An information disclosure vulnerability exists in the Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (ASLR) bypass, aka "Windows Kernel Information Disclosure Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers. This CVE ID is unique from CVE-2018-0887, CVE-2018-0960, CVE-2018-0968, CVE-2018-0969, CVE-2018-0970, CVE-2018-0972, CVE-2018-0973, CVE-2018-0974, CVE-2018-0975.
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Analysis
by VulDB Data Team • 09/14/2025
The vulnerability described in CVE-2018-0971 represents a critical information disclosure flaw within the Windows kernel that fundamentally undermines system security mechanisms. This vulnerability specifically targets the kernel's handling of memory management structures and exposes sensitive information that can be exploited by malicious actors to bypass critical security protections. The flaw exists in the kernel's information disclosure mechanisms, where improper handling of certain kernel data structures allows unauthorized access to memory addresses and system internals that should remain protected from user-mode processes. The vulnerability affects multiple Windows operating systems including legacy versions like Windows 7 and Server 2008, as well as newer releases such as Windows 10 and Server 2016, indicating a widespread impact across the Windows ecosystem. This information disclosure creates a significant risk for attackers seeking to understand system memory layouts and kernel structures, which are essential components for advanced exploitation techniques.
The technical nature of this vulnerability stems from improper kernel memory management where specific kernel functions fail to adequately protect sensitive information from being exposed to user-mode applications. The flaw manifests when certain kernel APIs or system calls provide access to memory addresses, kernel module base addresses, or other internal kernel structures that are not properly sanitized before being returned to user-space processes. This creates a pathway for attackers to gather information about kernel memory layout, which directly impacts ASLR effectiveness. The vulnerability operates at the kernel level, making it particularly dangerous as it bypasses traditional user-mode security controls and operates within the privileged execution context of the operating system. This type of flaw is classified under CWE-200 (Information Exposure) and represents a direct violation of information hiding principles that are fundamental to operating system security architecture.
The operational impact of CVE-2018-0971 is severe and far-reaching, as it provides attackers with critical information needed to craft more sophisticated exploits against Windows systems. The exposure of kernel memory addresses and system structures enables attackers to bypass ASLR protections that are designed to randomize memory layout and prevent predictable memory access patterns. This vulnerability essentially creates a reconnaissance tool in the hands of attackers, allowing them to gather the precise information required for advanced exploitation techniques such as return-oriented programming (ROP) attacks or direct kernel object manipulation. The ability to predict or determine kernel memory locations significantly reduces the complexity and success rate of subsequent exploitation attempts, making this vulnerability particularly dangerous in the context of zero-day attacks or advanced persistent threats. The vulnerability's impact extends beyond immediate information disclosure, as it provides the foundation for more complex attack vectors that could ultimately lead to privilege escalation or complete system compromise.
Mitigation strategies for CVE-2018-0971 primarily focus on implementing timely security updates from Microsoft, which address the underlying kernel memory management issues. System administrators should prioritize patching affected Windows systems with the appropriate security updates released by Microsoft, as these patches specifically target the information disclosure mechanisms that enable the vulnerability. Additionally, organizations should implement network segmentation and access controls to limit the potential impact of exploitation, particularly in critical infrastructure environments. The vulnerability aligns with ATT&CK technique T1068 (Local Privilege Escalation) and T1059 (Command and Scripting Interpreter) as it provides the initial information gathering necessary for more sophisticated exploitation techniques. Organizations should also consider implementing monitoring solutions that can detect unusual kernel memory access patterns or attempts to query system information that might indicate exploitation attempts. Regular security assessments and vulnerability scanning should be conducted to identify systems that may not have received the necessary patches, as the vulnerability affects a broad range of Windows versions and deployment scenarios. The implementation of these mitigations helps reduce the attack surface and prevents adversaries from leveraging this information disclosure to gain unauthorized access to system resources or escalate privileges within the compromised environment.