CVE-2024-38151 in Windows
Summary
by MITRE • 08/13/2024
Windows Kernel Information Disclosure Vulnerability
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Analysis
by VulDB Data Team • 07/11/2026
This vulnerability represents a critical information disclosure flaw within the windows kernel component that allows attackers to extract sensitive system data through improper access control mechanisms. The issue stems from insufficient validation of kernel-mode operations that permit unauthorized access to memory regions containing confidential information such as kernel pointers, system structures, and potentially credential data. According to cwe-200, this vulnerability falls under information exposure categories where the system inadvertently reveals internal state information to unprivileged users or processes. The flaw typically manifests when kernel functions fail to properly enforce privilege checks during data retrieval operations, enabling local attackers with standard user privileges to access memory locations that should only be accessible to kernel-mode components.
The technical implementation of this vulnerability exploits weaknesses in the windows kernel's security model where certain system calls or driver interfaces do not adequately validate the calling process's privilege level before returning sensitive information. Attackers can leverage this by crafting specific API calls or using kernel-mode drivers that trigger the vulnerable code path, resulting in the disclosure of kernel memory contents including virtual addresses, structure offsets, and potentially even cryptographic keys or session tokens. The vulnerability often relates to improper use of ntquerysysteminformation or similar kernel interfaces where the system does not properly verify that the requesting process has sufficient privileges to access the requested information. This type of flaw directly maps to attack techniques described in the mitre att&ck framework under privilege escalation and credential access tactics, specifically targeting the initial access phase where attackers seek to gather intelligence about the target system.
The operational impact of this vulnerability extends beyond simple information disclosure as it provides attackers with critical reconnaissance data that can be used to facilitate further exploitation attempts. Once an attacker gains knowledge of kernel memory layouts, they can craft more sophisticated attacks such as kernel exploits or bypass security mechanisms like address space layout randomization. The disclosed information may reveal specific offsets within kernel structures that are crucial for developing reliable exploit code, making this vulnerability particularly dangerous in targeted attack scenarios. Additionally, the vulnerability can be leveraged to gather system fingerprinting data including kernel version information, installed patches, and memory configuration details that help attackers tailor their exploitation strategies. Organizations running affected windows systems face significant risk as this information disclosure can enable advanced persistent threat actors to develop more effective attack vectors against their infrastructure.
Mitigation strategies for this vulnerability require immediate patch application from microsoft as the primary defense mechanism, since the flaw exists within core operating system components that cannot be effectively protected through configuration changes alone. System administrators should prioritize deployment of the relevant security updates and ensure comprehensive testing before widespread rollout to avoid service disruptions. Additional defensive measures include implementing strict access controls on kernel-mode drivers, monitoring for unusual system calls or API usage patterns that might indicate exploitation attempts, and employing memory protection mechanisms such as control flow guard and virtualization-based security features. Network segmentation and principle of least privilege enforcement can help limit the potential damage if an attacker successfully exploits this vulnerability by preventing lateral movement within the compromised system. Organizations should also consider implementing endpoint detection and response solutions that can identify anomalous behavior patterns consistent with information disclosure attacks, while maintaining regular vulnerability assessments to identify similar weaknesses in other system components.