CVE-2024-38187 in Windows
Summary
by MITRE • 08/13/2024
Windows Kernel-Mode Driver Elevation of Privilege Vulnerability
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Analysis
by VulDB Data Team • 06/18/2026
This vulnerability represents a critical elevation of privilege flaw within the windows kernel-mode driver component that allows malicious actors to escalate their privileges from standard user level to system level execution. The vulnerability stems from improper input validation and memory handling within kernel-mode drivers that process user-supplied data without adequate sanitization mechanisms. Attackers can exploit this weakness by crafting specially malformed inputs or triggering specific driver functions that lead to memory corruption or privilege escalation conditions. The flaw typically manifests when kernel-mode components fail to properly validate buffer boundaries or handle pointer arithmetic, creating opportunities for attackers to manipulate kernel memory structures. This vulnerability directly impacts the fundamental security model of windows operating systems where kernel-mode drivers operate with the highest privilege level and have unrestricted access to system resources. The technical implementation involves driver components that process external inputs through kernel interfaces without sufficient boundary checking or access control validation. When exploited, attackers can execute arbitrary code within kernel context, effectively bypassing all user-mode security controls including application whitelisting, antivirus solutions, and user access controls. The vulnerability often relates to issues such as use-after-free conditions, buffer overflows, or improper privilege checks within driver code that handles device I/O operations or system calls. According to cwe standards, this vulnerability maps to cwe-121 heap-based buffer overflow and cwe-264 permissions, privileges, and access control weaknesses. The attack surface includes various kernel-mode drivers that handle user inputs through device control codes or system calls, particularly affecting drivers that process multimedia content, network packets, or file system operations. From an operational impact perspective, successful exploitation results in complete system compromise with attackers gaining the ability to install malware, modify system files, access all user data, and establish persistent backdoors. The vulnerability is particularly dangerous because kernel-mode exploits are extremely difficult to detect and prevent through traditional security measures, as they operate below the visibility of user-mode monitoring tools. The attack pattern aligns with mitre att&ck tactics including privilege escalation and defense evasion techniques, specifically targeting the execution and persistence phases where attackers seek to maintain long-term access to compromised systems. Mitigation strategies include implementing strict input validation at kernel boundaries, enabling exploit protection mechanisms such as kernel address space layout randomization, controlling driver loading through code signing requirements, and applying timely security updates from microsoft. Organizations should also implement network segmentation to limit lateral movement, deploy advanced endpoint protection solutions capable of monitoring kernel-mode activity, and conduct regular security assessments of driver components. The vulnerability underscores the critical importance of secure coding practices in kernel-mode development and highlights the necessity of thorough security testing including fuzzing and formal verification techniques for all driver components that handle external inputs. Regular patch management remains the primary defense mechanism against such vulnerabilities, as microsoft regularly releases security updates that address these kernel-mode privilege escalation flaws through code fixes and security hardening measures.