Windows Power Dependency Coordinator (PDC) Use-After-Free Local Privilege Escalation Vulnerability (CVE-2024-38107) Analysis and Mitigation Guide

1. Vulnerability Overview & Root Cause

This vulnerability (CVE-2024-38107) is a Use-After-Free (UAF) flaw residing within the Windows Power Dependency Coordinator (PDC) kernel driver, which manages power state transitions and resource coordination. The root cause lies in improper memory management where the driver fails to nullify or invalidate pointers to objects that have been freed from memory during power state transitions. This leaves a dangling pointer in the kernel space, which can be subsequently manipulated by an attacker.

2. Exploitation Mechanics & Attack Scenario

To exploit this vulnerability, an attacker must first gain local execution capabilities on the target system, typically through low-privileged user access or initial compromise via phishing or web-based exploits. The attacker then triggers specific system events or API calls that force the PDC driver to free a target power dependency object. Immediately after the memory is freed, the attacker performs heap grooming or spraying to occupy the freed memory address with a crafted malicious object. When the kernel references the dangling pointer, it executes the attacker-controlled virtual function table (vftable), resulting in arbitrary code execution within the kernel context (Ring 0) and elevating privileges to SYSTEM.

3. Infrastructure & Business Impact

CVE-2024-38107 is actively exploited in the wild and has been added to the CISA Known Exploited Vulnerabilities (KEV) catalog. Local Privilege Escalation (EoP) vulnerabilities are highly critical in the post-exploitation phase. Attackers leverage them to bypass endpoint security controls, dump credentials (e.g., LSASS), establish persistence, move laterally across the network, and deploy ransomware. Failure to patch this vulnerability exposes the entire enterprise infrastructure to complete domain compromise.