CVE-2024-38144 in Windows
Summary
by MITRE • 08/13/2024
Kernel Streaming WOW Thunk Service Driver Elevation of Privilege Vulnerability
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Analysis
by VulDB Data Team • 07/09/2026
This vulnerability exists within the kernel streaming wow thunk service driver component of microsoft windows operating systems, representing a critical elevation of privilege flaw that allows malicious actors to escalate their privileges from standard user level to system level access. The issue stems from improper input validation and insufficient privilege checks within the driver's handling of kernel-mode operations, specifically affecting the wow64 subsystem's interaction with kernel streaming components. Attackers can exploit this vulnerability by crafting malicious payloads that leverage the driver's improper privilege enforcement mechanisms to execute arbitrary code with elevated privileges.
The technical root cause of this vulnerability lies in the driver's failure to properly validate parameters passed during kernel-mode function calls, creating a path for privilege escalation through malformed input structures. This flaw operates at the intersection of multiple security boundaries where user-mode applications interact with kernel-mode drivers, specifically within the wow64 emulation layer that facilitates 32-bit application execution on 64-bit systems. The vulnerability manifests when the driver processes requests from user-mode applications without adequate verification of the calling context or privilege levels, allowing malicious input to bypass normal security checks.
From an operational perspective this vulnerability presents significant risk to enterprise environments as it can be exploited remotely or locally to gain system-level control over affected systems. The attack surface includes scenarios where users might execute malicious code through legitimate application pathways or through social engineering tactics that诱导 users to interact with compromised applications. The exploitability of this flaw is enhanced by the fact that it operates within core operating system components that are frequently accessed and have broad privilege implications.
Organizations should implement immediate mitigations including applying microsoft security patches and updates as soon as they become available, disabling unnecessary driver services where possible, and implementing strict access controls on affected systems. The vulnerability aligns with common attack patterns documented in the mitre att&ck framework under privilege escalation techniques, specifically targeting the use of kernel-mode exploits to gain administrative privileges. Security professionals should monitor for suspicious driver loading activities and implement behavioral analysis tools to detect anomalous kernel-mode operations that might indicate exploitation attempts.
This vulnerability type falls under the cwes classification of improper input validation and insufficient privilege checks within kernel-mode drivers, making it particularly dangerous due to its ability to bypass multiple layers of operating system security mechanisms. The impact extends beyond individual system compromise to potential lateral movement opportunities within network environments where attackers can establish persistent access through system-level privileges. Organizations should conduct comprehensive vulnerability assessments to identify all affected systems and implement layered defense strategies including application whitelisting, kernel-mode protection mechanisms, and regular security monitoring to detect exploitation attempts.
The remediation approach requires systematic patch management across all affected windows versions including both server and desktop operating systems, with particular attention to legacy systems that may not receive extended support. Security teams should also review existing security configurations to ensure proper driver signature enforcement and implement monitoring solutions capable of detecting unauthorized kernel-mode modifications or privilege escalation attempts. This vulnerability demonstrates the ongoing challenges in securing complex operating system components where multiple security layers must work cohesively to prevent exploitation of kernel-mode flaws that can fundamentally compromise system integrity and user data protection.