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Commit 24c0761e authored by Michal Kostenec's avatar Michal Kostenec
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Opraven problem s prihlasovanim pri kolizi CN a AN 

Zjednodusen kod autorizace
parent 3c27ef6a
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src/warden-server/lib/Warden.pm
+ 89
− 69
View file @ 24c0761e
......@@ -121,6 +121,64 @@ sub getAltNames
}
#-------------------------------------------------------------------------------
# authorizeClient - authorize client by CN,AN and source IP range
#-------------------------------------------------------------------------------
sub authorizeClient
{
my ($alt_names, $ip, $service_type, $client_type, $function_name) = @_;
my $sth;
# obtain cidr based on rigth common name and alternate names, service and client_type
if($function_name eq 'saveNewEvent') {
$sth = $DBH->prepare_cached("SELECT hostname, ip_net_client, receive_own_events
FROM clients WHERE hostname IN ($alt_names) AND service = ? AND client_type = ?
ORDER BY SUBSTRING_INDEX(ip_net_client,'/', -1) DESC;");
}
elsif($function_name eq 'getNewEvents') {
$sth = $DBH->prepare_cached("SELECT hostname, ip_net_client, receive_own_events
FROM clients WHERE hostname IN ($alt_names) AND type = ? AND client_type = ?
ORDER BY SUBSTRING_INDEX(ip_net_client,'/', -1) DESC;");
}
if (!defined $sth) { die("Cannot prepare authorization statement in $function_name: $DBI::errstr\n")}
$sth->execute($service_type, $client_type);
my ($an, $cidr, $receive_own, $cidr_list);
my $correct_ip_source = 0;
my %ret;
while(($an, $cidr, $receive_own) = $sth->fetchrow()) {
my $cidr_list = Net::CIDR::Lite-> new -> add($cidr);
$ret{'dns'} = $an;
$ret{'cidr'} = $cidr;
$ret{'receive_own'} = $receive_own;
if ($cidr_list->bin_find($ip)) {
$correct_ip_source = 1;
last;
}
};
# check if client is registered
if ($sth->rows == 0) {
write2log ("err", "Unauthorized access to $function_name from: $ip (CN(AN): $alt_names) - client is not registered");
die("Access denied - client is not registered at warden server!");
return undef;
}
# check if client has IP from registered CIDR
if (!$correct_ip_source) {
write2log ("err", "Unauthorized access to $function_name from: $ip (CN(AN): $alt_names) - access from bad subnet: " . $ret{'cidr'});
die("Access denied - access from unauthorized subnet!");
return undef;
}
return %ret;
}
################################################################################
# SOAP Functions
......@@ -147,57 +205,38 @@ sub saveNewEvent
# parse object (event) parameters
my $service = $data->{'SERVICE'};
my $detected = $data->{'DETECTED'};
my $type = $data->{'TYPE'};
my $type = $data->{'TYPE'};
my $source_type = $data->{'SOURCE_TYPE'};
my $source = $data->{'SOURCE'};
my $target_proto = $data->{'TARGET_PROTO'};
my $target_port = $data->{'TARGET_PORT'};
my $attack_scale = $data->{'ATTACK_SCALE'};
my $note = $data->{'NOTE'};
my $note = $data->{'NOTE'};
my $priority = $data->{'PRIORITY'};
my $timeout = $data->{'TIMEOUT'};
# obtain cidr based on rigth common name and alternate names, service and client_type
$sth = $DBH->prepare_cached("SELECT hostname, ip_net_client FROM clients WHERE hostname IN ($alt_names) AND service = ? AND client_type = ? LIMIT 1;");
if (!defined $sth) {die("Cannot prepare authorization statement in saveNewEvent: $DBI::errstr\n")}
$sth->execute($service, $client_type);
my ($an, $cidr) = $sth->fetchrow();
# check if client is registered
if (!defined $cidr) {
write2log ("err", "Unauthorized access to saveNewEvent from: $ip (CN: $cn; AN: $an) - client is not registered");
die("Access denied - client is not registered at warden server!");
} else {
$cidr_list = Net::CIDR::Lite
-> new
-> add($cidr);
}
# check if client has IP from registered CIDR
if (!$cidr_list->bin_find($ip)) {
write2log ("err", "Unauthorized access to saveNewEvent from: $ip (CN: $cn; AN: $an) - access from bad subnet: $cidr");
die("Access denied - access from unauthorized subnet!");
} else {
my %client = authorizeClient($alt_names, $ip, $service, $client_type, 'saveNewEvent');
if(defined %client) {
# insert new events into DB
$sth=$DBH->prepare_cached("INSERT INTO events VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?);");
if (!defined $sth) {die("Cannot do insert statement in saveNewEvent: $DBI::errstr\n")}
$sth->execute(undef, $cn, $service, $detected, $received, $type, $source_type, $source, $target_proto, $target_port, $attack_scale, $note, $priority, $timeout, $valid);
# log last inserted ID
$sth = $DBH->prepare("SELECT last_insert_id()");
if ( !defined $sth ) {die("Cannot prepare last ID statement in saveNewEvent: $DBI::errstr\n")}
$sth->execute;
my $id= $sth->fetchrow();
write2log ("info", "Stored new event (#$id) from $ip (CN: $cn; AN: $an)");
if (! defined $id) {
write2log ("err", "Event from $ip ($cn) was not save: INSERT INTO events VALUES (NULL,$cn,$service,$detected,$received,$type,$source_type,$source,$target_proto,$target_port,$attack_scale,$note,$priority,$timeout,$valid);");
die("Event was not save at warden server - database return empty ID!");
return 0;
} else {
$sth->execute(undef, $client{'dns'}, $service, $detected, $received, $type, $source_type, $source, $target_proto, $target_port, $attack_scale, $note, $priority, $timeout, $valid);
## log last inserted ID
#$sth = $DBH->prepare("SELECT last_insert_id()");
#if ( !defined $sth ) {die("Cannot prepare last ID statement in saveNewEvent: $DBI::errstr\n")}
#$sth->execute;
#my $id= $sth->fetchrow();
#write2log ("info", "Stored new event (#$id) from $ip (CN: $cn; AN: $an)");
#if (! defined $id) {
# write2log ("err", "Event from $ip ($cn) was not save: INSERT INTO events VALUES (NULL,$cn,$service,$detected,$received,$type,$source_type,$source,$target_proto,$target_port,$attack_scale,$note,$priority,$timeout,$valid);");
# die("Event was not save at warden server - database return empty ID!");
# return 0;
#} else {
return 1;
}
# }
}
} # END of saveNewEvent
......@@ -212,40 +251,21 @@ sub getNewEvents
my ($id, $hostname, $service, $detected, $type, $source_type, $source, $target_proto, $target_port, $attack_scale, $note, $priority, $timeout);
# client network information
my $cn = $ENV{'SSL_CLIENT_S_DN_CN'};
my $cn = $ENV{'SSL_CLIENT_S_DN_CN'};
my $alt_names = getAltNames(undef);
my $ip = $ENV{'REMOTE_ADDR'};
my $ip = $ENV{'REMOTE_ADDR'};
my $client_type = "r"; # incoming client MUST be sender
# parse SOAP data object
my $requested_type = $data->{'REQUESTED_TYPE'};
my $last_id = $data->{'LAST_ID'};
my $requested_type = $data->{'REQUESTED_TYPE'};
my $last_id = $data->{'LAST_ID'};
# obtain cidr based on rigth common name, service and client_type
$sth = $DBH->prepare_cached("SELECT hostname, receive_own_events, ip_net_client FROM clients WHERE hostname IN ($alt_names) AND type = ? AND client_type = ? LIMIT 1;");
if (!defined $sth) {die("Cannot prepare authorization statement in getNewEvents: $DBI::errstr\n")}
$sth->execute($requested_type, $client_type);
my ($an, $receive_own_events, $cidr) = $sth->fetchrow();
# check if client is registered
if (!defined $cidr) {
write2log ("err", "Unauthorized access to getNewEvents from: $ip (CN: $cn; AN: $an) - client is not registered");
die("Access denied - client is not registered at warden server!");
} else {
$cidr_list = Net::CIDR::Lite
-> new
-> add($cidr);
}
# check if client has IP from registered CIDR
if (!$cidr_list->bin_find($ip)) {
write2log ("err", "Unauthorized access to getNewEvents from: $ip (CN: $cn; AN: $an) - access from bad subnet: $cidr");
die("Access denied - access from unathorized subnet!");
} else {
my %client = authorizeClient($alt_names, $ip, $requested_type, $client_type, 'getNewEvents');
if(defined %client) {
# check if client want your own events or not
if ($receive_own_events eq 't') {
if ($client{'receive_own'} eq 't') {
$sth = $DBH->prepare("SELECT * FROM events WHERE type != 'test' AND id > ? AND type = ? AND valid = 't' ORDER BY id ASC;");
if (!defined $sth) {die("Cannot prepare ROE statement in getNewEvents: $DBI::errstr\n")}
$sth->execute($last_id, $requested_type);
......@@ -268,19 +288,19 @@ sub getNewEvents
$source = $result[7];
$target_proto = $result[8];
$target_port = $result[9];
$attack_scale = $result[10];
$attack_scale = $result[10];
$note = $result[11];
$priority = $result[12];
$timeout = $result[13];
# create SOAP data object
$event = SOAP::Data->name(event => \SOAP::Data->value(
SOAP::Data->name(ID => $id),
SOAP::Data->name(ID => $id),
SOAP::Data->name(HOSTNAME => $hostname),
SOAP::Data->name(SERVICE => $service),
SOAP::Data->name(DETECTED => $detected),
SOAP::Data->name(TYPE => $type),
SOAP::Data->name(SOURCE_TYPE => $source_type),
SOAP::Data->name(SOURCE_TYPE=> $source_type),
SOAP::Data->name(SOURCE => $source),
SOAP::Data->name(TARGET_PROTO => $target_proto),
SOAP::Data->name(TARGET_PORT => $target_port),
......@@ -296,9 +316,9 @@ sub getNewEvents
# log sent ID of events
if (scalar @events != 0) {
if (scalar @ids == 1) {
write2log("info", "Sent 1 events [#$ids[0]] to $ip (CN: $cn; AN: $an)");
write2log("info", "Sent 1 events [#$ids[0]] to $ip (CN(AN): $alt_names)");
} else {
write2log("info", "Sent " . scalar @ids . " events [#$ids[0] - #$ids[-1]] to $ip (CN: $cn; AN: $an)");
write2log("info", "Sent " . scalar @ids . " events [#$ids[0] - #$ids[-1]] to $ip (CN(AN): $alt_names)");
}
}
return @events;
......
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