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-rwxr-xr-xconfig/snort/snort.inc24
-rwxr-xr-xconfig/snort/snort_define_servers.php2
-rwxr-xr-xconfig/snort/snort_preprocessors.php34
3 files changed, 53 insertions, 7 deletions
diff --git a/config/snort/snort.inc b/config/snort/snort.inc
index 869e040e..884c50ec 100755
--- a/config/snort/snort.inc
+++ b/config/snort/snort.inc
@@ -1977,7 +1977,8 @@ function snort_generate_conf($snortcfg) {
"DCERPC_NCACN_IP_TCP" => "139,445", "DCERPC_NCADG_IP_UDP" => "138,1024:",
"DCERPC_NCACN_IP_LONG" => "135,139,445,593,1024:", "DCERPC_NCACN_UDP_LONG" => "135,1024:",
"DCERPC_NCACN_UDP_SHORT" => "135,593,1024:", "DCERPC_NCACN_TCP" => "2103,2105,2107",
- "DCERPC_BRIGHTSTORE" => "6503,6504", "DNP3_PORTS" => "20000", "MODBUS_PORTS" => "502"
+ "DCERPC_BRIGHTSTORE" => "6503,6504", "DNP3_PORTS" => "20000", "MODBUS_PORTS" => "502",
+ "GTP_PORTS" => "2123,2152,3386"
);
$portvardef = "";
@@ -2002,6 +2003,10 @@ EOD;
if ((!empty($snortcfg['server_flow_depth'])) || ($snortcfg['server_flow_depth'] == '0'))
$def_server_flow_depth_type = $snortcfg['server_flow_depth'];
+ $http_server_profile = "all";
+ if (!empty($snortcfg['http_server_profile']))
+ $http_server_profile = $snortcfg['http_server_profile'];
+
$def_client_flow_depth_type = '300';
if ((!empty($snortcfg['client_flow_depth'])) || ($snortcfg['client_flow_depth'] == '0'))
$def_client_flow_depth_type = $snortcfg['client_flow_depth'];
@@ -2017,7 +2022,7 @@ EOD;
# HTTP Inspect #
preprocessor http_inspect: global iis_unicode_map unicode.map 1252 compress_depth 65535 decompress_depth 65535
-preprocessor http_inspect_server: server default profile all {$noalert_http_inspect}\
+preprocessor http_inspect_server: server default profile {$http_server_profile} {$noalert_http_inspect}\
ports { {$http_ports} } \
http_methods { GET POST PUT SEARCH MKCOL COPY MOVE LOCK UNLOCK NOTIFY POLL BCOPY BDELETE BMOVE LINK UNLINK OPTIONS HEAD DELETE TRACE TRACK CONNECT SOURCE SUBSCRIBE UNSUBSCRIBE PROPFIND PROPPATCH BPROPFIND BPROPPATCH RPC_CONNECT PROXY_SUCCESS BITS_POST CCM_POST SMS_POST RPC_IN_DATA RPC_OUT_DATA RPC_ECHO_DATA } \
server_flow_depth {$def_server_flow_depth_type} \
@@ -2221,6 +2226,14 @@ preprocessor modbus: \
EOD;
+ /* def gtp_preprocessor */
+ $gtp_ports = str_replace(",", " ", $snort_ports['GTP_PORTS']);
+ $gtp_preproc = <<<EOD
+# GTP preprocessor #
+preprocessor gtp: ports { {$gtp_ports} }
+
+EOD;
+
$def_ssl_ports_ignore = str_replace(",", " ", $snort_ports['ssl_ports']);
$ssl_preproc = <<<EOD
# Ignore SSL and Encryption #
@@ -2267,11 +2280,11 @@ EOD;
$snort_preproc_libs = array(
"dce_rpc_2" => "dce2_preproc", "dns_preprocessor" => "dns_preproc", "ftp_preprocessor" => "ftptelnet_preproc", "imap_preproc" => "imap_preproc",
"pop_preproc" => "pop_preproc", "reputation_preproc" => "reputation_preproc", "sensitive_data" => "sdf_preproc",
- "sip_preproc" => "sip_preproc", "smtp_preprocessor" => "smtp_preproc", "ssh_preproc" => "ssh_preproc",
+ "sip_preproc" => "sip_preproc", "gtp_preproc" => "gtp_preproc", "smtp_preprocessor" => "smtp_preproc", "ssh_preproc" => "ssh_preproc",
"ssl_preproc" => "ssl_preproc", "dnp3_preproc" => "dnp3_preproc", "modbus_preproc" => "modbus_preproc"
);
$snort_preproc = array (
- "perform_stat", "http_inspect", "other_preprocs", "ftp_preprocessor", "smtp_preprocessor", "ssl_preproc", "sip_preproc",
+ "perform_stat", "http_inspect", "other_preprocs", "ftp_preprocessor", "smtp_preprocessor", "ssl_preproc", "sip_preproc", "gtp_preproc",
"sf_portscan", "dce_rpc_2", "dns_preprocessor", "sensitive_data", "pop_preproc", "imap_preproc", "dnp3_preproc", "modbus_preproc"
);
$snort_preprocessors = "";
@@ -2369,6 +2382,9 @@ config disable_tcpopt_alerts
config disable_ipopt_alerts
config disable_decode_drops
+# Enable the GTP decoder #
+config enable_gtp
+
# Configure PCRE match limitations
config pcre_match_limit: 3500
config pcre_match_limit_recursion: 1500
diff --git a/config/snort/snort_define_servers.php b/config/snort/snort_define_servers.php
index 3a12b284..4085b325 100755
--- a/config/snort/snort_define_servers.php
+++ b/config/snort/snort_define_servers.php
@@ -75,7 +75,7 @@ $snort_ports = array(
"sip_ports" => "5060,5061", "auth_ports" => "113", "finger_ports" => "79",
"irc_ports" => "6665,6666,6667,6668,6669,7000", "smb_ports" => "139,445",
"nntp_ports" => "119", "rlogin_ports" => "513", "rsh_ports" => "514",
-"ssl_ports" => "443,465,563,636,989,990,992,993,994,995",
+"ssl_ports" => "443,465,563,636,989,990,992,993,994,995", "GTP_PORTS" => "2123,2152,3386",
"file_data_ports" => "\$HTTP_PORTS,110,143", "shellcode_ports" => "!80",
"sun_rpc_ports" => "111,32770,32771,32772,32773,32774,32775,32776,32777,32778,32779",
"DCERPC_NCACN_IP_TCP" => "139,445", "DCERPC_NCADG_IP_UDP" => "138,1024:",
diff --git a/config/snort/snort_preprocessors.php b/config/snort/snort_preprocessors.php
index 83025929..7d0348e9 100755
--- a/config/snort/snort_preprocessors.php
+++ b/config/snort/snort_preprocessors.php
@@ -56,6 +56,7 @@ if (isset($id) && $a_nat[$id]) {
/* new options */
$pconfig['perform_stat'] = $a_nat[$id]['perform_stat'];
$pconfig['server_flow_depth'] = $a_nat[$id]['server_flow_depth'];
+ $pconfig['http_server_profile'] = $a_nat[$id]['http_server_profile'];
$pconfig['client_flow_depth'] = $a_nat[$id]['client_flow_depth'];
$pconfig['max_queued_bytes'] = $a_nat[$id]['max_queued_bytes'];
$pconfig['max_queued_segs'] = $a_nat[$id]['max_queued_segs'];
@@ -75,6 +76,7 @@ if (isset($id) && $a_nat[$id]) {
$pconfig['sip_preproc'] = $a_nat[$id]['sip_preproc'];
$pconfig['dnp3_preproc'] = $a_nat[$id]['dnp3_preproc'];
$pconfig['modbus_preproc'] = $a_nat[$id]['modbus_preproc'];
+ $pconfig['gtp_preproc'] = $a_nat[$id]['gtp_preproc'];
}
if ($_POST) {
@@ -88,6 +90,7 @@ if ($_POST) {
if (!$input_errors) {
/* post new options */
if ($_POST['server_flow_depth'] != "") { $natent['server_flow_depth'] = $_POST['server_flow_depth']; }else{ $natent['server_flow_depth'] = ""; }
+ if ($_POST['http_server_profile'] != "") { $natent['http_server_profile'] = $_POST['http_server_profile']; }else{ $natent['http_server_profile'] = "all"; }
if ($_POST['client_flow_depth'] != "") { $natent['client_flow_depth'] = $_POST['client_flow_depth']; }else{ $natent['client_flow_depth'] = ""; }
if ($_POST['max_queued_bytes'] != "") { $natent['max_queued_bytes'] = $_POST['max_queued_bytes']; }else{ $natent['max_queued_bytes'] = ""; }
if ($_POST['max_queued_segs'] != "") { $natent['max_queued_segs'] = $_POST['max_queued_segs']; }else{ $natent['max_queued_segs'] = ""; }
@@ -116,6 +119,7 @@ if ($_POST) {
$natent['modbus_preproc'] = $_POST['modbus_preproc'] ? 'on' : 'off';
$natent['sip_preproc'] = $_POST['sip_preproc'] ? 'on' : 'off';
$natent['modbus_preproc'] = $_POST['modbus_preproc'] ? 'on' : 'off';
+ $natent['gtp_preproc'] = $_POST['gtp_preproc'] ? 'on' : 'off';
if (isset($id) && $a_nat[$id])
$a_nat[$id] = $natent;
@@ -221,7 +225,7 @@ include_once("head.inc");
<tr>
<td><input name="server_flow_depth" type="text" class="formfld"
id="flow_depth" size="6"
- value="<?=htmlspecialchars($pconfig['server_flow_depth']);?>"> <?php echo gettext("<strong>-1</strong> " .
+ value="<?=htmlspecialchars($pconfig['server_flow_depth']);?>">&nbsp;&nbsp;<?php echo gettext("<strong>-1</strong> " .
"to <strong>65535</strong> (<strong>-1</strong> disables HTTP " .
"inspect, <strong>0</strong> enables all HTTP inspect)"); ?></td>
</tr>
@@ -233,6 +237,23 @@ include_once("head.inc");
</td>
</tr>
<tr>
+ <td width="22%" valign="top" class="vncell"><?php echo gettext("HTTP server profile"); ?> </td>
+ <td width="78%" class="vtable">
+ <select name="http_server_profile" class="formselect" id="http_server_profile">
+ <?php
+ $profile = array('All', 'Apache', 'IIS', 'IIS_4.0', 'IIS_5.0');
+ foreach ($profile as $val): ?>
+ <option value="<?=strtolower($val);?>"
+ <?php if (strtolower($val) == $pconfig['http_server_profile']) echo "selected"; ?>>
+ <?=gettext($val);?></option>
+ <?php endforeach; ?>
+ </select>&nbsp;&nbsp;<?php echo gettext("Choose the profile type of the protected web server."); ?><br>
+ <?php echo gettext(" The default is <strong>All</strong>. "); ?>
+ <?php echo gettext("IIS_4.0 and IIS_5.0 are identical to IIS except they alert on the "); ?>
+ <?php echo gettext("double decoding vulnerability present in those two versions."); ?><br>
+ </td>
+ </tr>
+ <tr>
<td valign="top" class="vncell"><?php echo gettext("HTTP client flow depth"); ?></td>
<td class="vtable">
<table cellpadding="0" cellspacing="0">
@@ -348,7 +369,7 @@ include_once("head.inc");
<td width="78%" class="vtable">
<input name="pscan_ignore_scanners" type="text" size="40" autocomplete="off" class="formfldalias" id="pscan_ignore_scanners"
value="<?=$pconfig['pscan_ignore_scanners'];?>"> <br><?php echo gettext("Ignores the specified entity as a source of scan alerts. Entity must be a defined alias.");?><br>
- <?php echo gettext("Default value: \$HOME_NET"); ?><?php echo gettext(" Leave " .
+ <?php echo gettext("Default value: \$HOME_NET."); ?><?php echo gettext(" Leave " .
"blank for default value."); ?>
</td>
<tr>
@@ -419,6 +440,15 @@ include_once("head.inc");
</tr>
<tr>
<td width="22%" valign="top" class="vncell"><?php echo gettext("Enable"); ?> <br>
+ <?php echo gettext("GTP Detection"); ?></td>
+ <td width="78%" class="vtable"><input name="gtp_preproc"
+ type="checkbox" value="on"
+ <?php if ($pconfig['gtp_preproc']=="on") echo "checked"; ?>
+ onClick="enable_change(false)"><br>
+ <?php echo gettext("The GTP preprocessor decodes GPRS Tunneling Protocol traffic and detects intrusion attempts."); ?></td>
+ </tr>
+ <tr>
+ <td width="22%" valign="top" class="vncell"><?php echo gettext("Enable"); ?> <br>
<?php echo gettext("DNS Detection"); ?></td>
<td width="78%" class="vtable"><input name="dns_preprocessor"
type="checkbox" value="on"