BETA version of Suricata 1.4.6 IDS package v0.1 for pfSense.

1 files changed, 329 insertions, 0 deletions

diff --git a/config/suricata/suricata_libhtp_policy_engine.php b/config/suricata/suricata_libhtp_policy_engine.php
new file mode 100644
index 00000000..a1f6a77c
--- /dev/null
+++ b/config/suricata/suricata_libhtp_policy_engine.php
@@ -0,0 +1,329 @@
+<?php
+/*
+ * suricata_libhtp_policy_engine.php
+ * Copyright (C) 2014 Bill Meeks
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+require_once("guiconfig.inc");
+require_once("/usr/local/pkg/suricata/suricata.inc");
+
+global $g;
+
+// Grab the incoming QUERY STRING or POST variables
+$id = $_GET['id'];
+$eng_id = $_GET['eng_id'];
+if (isset($_POST['id']))
+	$id = $_POST['id'];
+if (isset($_POST['eng_id']))
+	$eng_id = $_POST['eng_id'];
+
+if (is_null($id)) {
+ 	header("Location: /suricata/suricata_interfaces.php");
+	exit;
+}
+
+if (!is_array($config['installedpackages']['suricata']['rule']))
+	$config['installedpackages']['suricata']['rule'] = array();
+if (!is_array($config['installedpackages']['suricata']['rule'][$id]['libhtp_policy']['item']))
+	$config['installedpackages']['suricata']['rule'][$id]['libhtp_policy']['item'] = array();
+$a_nat = &$config['installedpackages']['suricata']['rule'][$id]['libhtp_policy']['item'];
+
+$pconfig = array();
+if (empty($a_nat[$eng_id])) {
+	$def = array( "name" => "engine_{$eng_id}", "bind_to" => "", "personality" => "IDS", 
+		      "request-body-limit" => "4096", "response-body-limit" => "4096", 
+		      "double-decode-path" => "no", "double-decode-query" => "no" );
+
+	// See if this is initial entry and set to "default" if true
+	if ($eng_id < 1) {
+		$def['name'] = "default";
+		$def['bind_to'] = "all";
+	}
+	$pconfig = $def;
+}
+else {
+	$pconfig = $a_nat[$eng_id];
+
+	// Check for any empty values and set sensible defaults
+	if (empty($pconfig['personality']))
+		$pconfig['personality'] = "IDS";
+}
+
+if ($_POST['Cancel']) {
+	header("Location: /suricata/suricata_app_parsers.php?id={$id}");
+	exit;
+}
+
+// Check for returned "selected alias" if action is import
+if ($_GET['act'] == "import") {
+	if ($_GET['varname'] == "bind_to" && !empty($_GET['varvalue']))
+		$pconfig[$_GET['varname']] = $_GET['varvalue'];
+}
+
+if ($_POST['Submit']) {
+
+	/* Grab all the POST values and save in new temp array */
+	$engine = array();
+	if ($_POST['policy_name']) { $engine['name'] = trim($_POST['policy_name']); } else { $engine['name'] = "default"; }
+	if ($_POST['policy_bind_to']) {
+		if (is_alias($_POST['policy_bind_to']))
+			$engine['bind_to'] = $_POST['policy_bind_to'];
+		elseif (strtolower(trim($_POST['policy_bind_to'])) == "all")
+			$engine['bind_to'] = "all";
+		else
+			$input_errors[] = gettext("You must provide a valid Alias or the reserved keyword 'all' for the 'Bind-To IP Address' value.");
+	}
+	else {
+		$input_errors[] = gettext("The 'Bind-To IP Address' value cannot be blank.  Provide a valid Alias or the reserved keyword 'all'.");
+	}
+
+	if ($_POST['personality']) { $engine['personality'] = $_POST['personality']; } else { $engine['personality'] = "IDS"; }
+	if (is_numeric($_POST['req_body_limit']) && $_POST['req_body_limit'] >= 0)
+		$engine['request-body-limit'] = $_POST['req_body_limit'];
+	else
+		$input_errors[] = gettext("The value for 'Request Body Limit' must be all numbers and greater than or equal to zero.");
+
+	if (is_numeric($_POST['resp_body_limit']) && $_POST['resp_body_limit'] >= 0)
+		$engine['response-body-limit'] = $_POST['resp_body_limit'];
+	else
+		$input_errors[] = gettext("The value for 'Response Body Limit' must be all numbers and greater than or equal to zero.");
+
+	if ($_POST['enable_double_decode_path']) { $engine['double-decode-path'] = 'yes'; }else{ $engine['double-decode-path'] = 'no'; }
+	if ($_POST['enable_double_decode_query']) { $engine['double-decode-query'] = 'yes'; }else{ $engine['double-decode-query'] = 'no'; }
+
+	/* Can only have one "all" Bind_To address */
+	if ($engine['bind_to'] == "all" && $engine['name'] <> "default") {
+		$input_errors[] = gettext("Only one default HTTP Server Policy Engine can be bound to all addresses.");
+		$pconfig = $engine;
+	}
+
+	/* if no errors, write new entry to conf */
+	if (!$input_errors) {
+		if (isset($eng_id) && $a_nat[$eng_id]) {
+			$a_nat[$eng_id] = $engine;
+		}
+		else
+			$a_nat[] = $engine;
+
+		/* Reorder the engine array to ensure the */
+		/* 'bind_to=all' entry is at the bottom   */
+		/* if it contains more than one entry.    */
+		if (count($a_nat) > 1) {
+			$i = -1;
+			foreach ($a_nat as $f => $v) {
+				if ($v['bind_to'] == "all") {
+					$i = $f;
+					break;
+				}
+			}
+			/* Only relocate the entry if we  */
+			/* found it, and it's not already */
+			/* at the end.                    */
+			if ($i > -1 && ($i < (count($a_nat) - 1))) {
+				$tmp = $a_nat[$i];
+				unset($a_nat[$i]);
+				$a_nat[] = $tmp;
+			}
+		}
+
+		/* Now write the new engine array to conf */
+		write_config();
+
+		header("Location: /suricata/suricata_app_parsers.php?id={$id}");
+		exit;
+	}
+}
+
+$if_friendly = suricata_get_friendly_interface($config['installedpackages']['suricata']['rule'][$id]['interface']);
+$pgtitle = gettext("Suricata: Interface {$if_friendly} HTTP Server Policy Engine");
+include_once("head.inc");
+
+?>
+
+<body link="#0000CC" vlink="#0000CC" alink="#0000CC" >
+
+<?php
+include("fbegin.inc");
+if ($input_errors) print_input_errors($input_errors);
+if ($savemsg)
+	print_info_box($savemsg);
+?>
+
+<form action="suricata_libhtp_policy_engine.php" method="post" name="iform" id="iform">
+<input name="id" type="hidden" value="<?=$id?>">
+<input name="eng_id" type="hidden" value="<?=$eng_id?>">
+<div id="boxarea">
+<table width="100%" border="0" cellpadding="0" cellspacing="0">
+<tr>
+<td class="tabcont">
+<table width="100%" border="0" cellpadding="6" cellspacing="0">
+	<tr>
+		<td colspan="2" valign="middle" class="listtopic"><?php echo gettext("Suricata Target-Based HTTP Server Policy Configuration"); ?></td>
+	</tr>
+	<tr>
+		<td valign="top" class="vncell"><?php echo gettext("Engine Name"); ?></td>
+		<td class="vtable">
+			<input name="policy_name" type="text" class="formfld unknown" id="policy_name" size="25" maxlength="25" 
+			value="<?=htmlspecialchars($pconfig['name']);?>"<?php if (htmlspecialchars($pconfig['name']) == "default") echo "readonly";?>>&nbsp;
+			<?php if (htmlspecialchars($pconfig['name']) <> "default") 
+					echo gettext("Name or description for this engine.  (Max 25 characters)");
+				else
+					echo "<span class=\"red\">" . gettext("The name for the 'default' engine is read-only.") . "</span>";?><br/>
+			<?php echo gettext("Unique name or description for this engine configuration.  Default value is ") . 
+			"<strong>" . gettext("default") . "</strong>"; ?>.<br/>
+		</td>
+	</tr>
+	<tr>
+		<td valign="top" class="vncell"><?php echo gettext("Bind-To IP Address Alias"); ?></td>
+		<td class="vtable">
+		<?php if ($pconfig['name'] <> "default") : ?>
+			<table width="95%" border="0" cellpadding="2" cellspacing="0">
+				<tr>
+					<td class="vexpl"><input name="policy_bind_to" type="text" class="formfldalias" id="policy_bind_to" size="32" 
+					value="<?=htmlspecialchars($pconfig['bind_to']);?>" title="<?=trim(filter_expand_alias($pconfig['bind_to']));?>" autocomplete="off">&nbsp;
+					<?php echo gettext("IP List to bind this engine to. (Cannot be blank)"); ?></td>
+					<td class="vexpl" align="right"><input type="button" class="formbtns" value="Aliases" onclick="parent.location='suricata_select_alias.php?id=<?=$id;?>&eng_id=<?=$eng_id;?>&type=host|network&varname=bind_to&act=import&multi_ip=yes&returl=<?=urlencode($_SERVER['PHP_SELF']);?>'" 
+					title="<?php echo gettext("Select an existing IP alias");?>"/></td>
+				</tr>
+				<tr>
+					<td class="vexpl" colspan="2"><?php echo gettext("This policy will apply for packets with destination addresses contained within this IP List.");?></td>
+				</tr>
+			</table>
+			<br/><span class="red"><strong><?php echo gettext("Note: ") . "</strong></span>" . gettext("Supplied value must be a pre-configured Alias or the keyword 'all'.");?>
+		<?php else : ?>
+			<input name="policy_bind_to" type="text" class="formfldalias" id="policy_bind_to" size="32" 
+			value="<?=htmlspecialchars($pconfig['bind_to']);?>" autocomplete="off" readonly>&nbsp;
+			<?php echo "<span class=\"red\">" . gettext("IP List for the default engine is read-only and must be 'all'.") . "</span>";?><br/>
+			<?php echo gettext("The default engine is required and will apply for packets with destination addresses not matching other engine IP Lists.");?><br/>
+		<?php endif ?>
+		</td>
+	</tr>
+	<tr>
+		<td width="22%" valign="top" class="vncell"><?php echo gettext("Target Web Server Personality"); ?> </td>
+		<td width="78%" class="vtable">
+			<select name="personality" class="formselect" id="personality">
+			<?php
+			$profile = array( 'Apache', 'Apache_2_2', 'Generic', 'IDS', 'IIS_4_0', 'IIS_5_0', 'IIS_5_1', 'IIS_6_0', 'IIS_7_0', 'IIS_7_5', 'Minimal' );
+			foreach ($profile as $val): ?>
+			<option value="<?=$val;?>" 
+			<?php if ($val == $pconfig['personality']) echo "selected"; ?>>
+				<?=gettext($val);?></option>
+				<?php endforeach; ?>
+			</select>&nbsp;&nbsp;<?php echo gettext("Choose the web server personality appropriate for the protected hosts.  The default is ") . 
+			"<strong>" . gettext("IDS") . "</strong>"; ?>.<br/><br/>
+			<?php echo gettext("Available web server personality targets are:  Apache, Apache 2.2, Generic, IDS (default), IIS_4_0, IIS_5_0, IIS_5_1, IIS_6_0, IIS_7_0, IIS_7_5 and Minimal."); ?><br/>
+		</td>
+	</tr>
+	<tr>
+		<td colspan="2" valign="top" class="listtopic"><?php echo gettext("Inspection Limits"); ?></td>
+	</tr>
+	<tr>
+		<td width="22%" valign="top" class="vncell"><?php echo gettext("Request Body Limit"); ?></td>
+		<td width="78%" class="vtable">
+			<input name="req_body_limit" type="text" class="formfld unknown" id="req_body_limit" size="9"
+			value="<?=htmlspecialchars($pconfig['request-body-limit']);?>">&nbsp;
+			<?php echo gettext("Maximum number of HTTP request body bytes to inspect.  Default is ") . 
+			"<strong>" . gettext("4,096") . "</strong>" . gettext(" bytes."); ?><br/><br/>
+			<?php echo gettext("HTTP request bodies are often big, so they take a lot of time to process which has a significant impact ") . 
+			gettext("on performance. This sets the limit (in bytes) of the client-body that will be inspected.") . "<br/><br/><span class=\"red\"><strong>" . 
+			gettext("Note: ") . "</strong></span>" . gettext("Setting this parameter to 0 will inspect all of the client-body."); ?>
+		</td>
+	</tr>
+	<tr>
+		<td width="22%" valign="top" class="vncell"><?php echo gettext("Response Body Limit"); ?></td>
+		<td width="78%" class="vtable">
+			<input name="resp_body_limit" type="text" class="formfld unknown" id="resp_body_limit" size="9"
+			value="<?=htmlspecialchars($pconfig['response-body-limit']);?>">&nbsp;
+			<?php echo gettext("Maximum number of HTTP response body bytes to inspect.  Default is ") . 
+			"<strong>" . gettext("4,096") . "</strong>" . gettext(" bytes."); ?><br/><br/>
+			<?php echo gettext("HTTP response bodies are often big, so they take a lot of time to process which has a significant impact ") . 
+			gettext("on performance. This sets the limit (in bytes) of the server-body that will be inspected.") . "<br/><br/><span class=\"red\"><strong>" . 
+			gettext("Note: ") . "</strong></span>" . gettext("Setting this parameter to 0 will inspect all of the server-body."); ?>
+		</td>
+	</tr>
+	<tr>
+		<td colspan="2" valign="top" class="listtopic"><?php echo gettext("Decode Settings"); ?></td>
+	</tr>
+	<tr>
+		<td width="22%" valign="top" class="vncell"><?php echo gettext("Double-Decode Path"); ?></td>
+		<td width="78%" class="vtable"><input name="enable_double_decode_path" type="checkbox" value="on" <?php if ($pconfig['double-decode-path'] == "yes") echo "checked"; ?>>
+			<?php echo gettext("Suricata will double-decode path section of the URI.  Default is ") . "<strong>" . gettext("Not Checked") . "</strong>."; ?></td>
+	</tr>
+	<tr>
+		<td width="22%" valign="top" class="vncell"><?php echo gettext("Double-Decode Query"); ?></td>
+		<td width="78%" class="vtable"><input name="enable_double_decode_query" type="checkbox" value="on" <?php if ($pconfig['double-decode-query'] == "yes") echo "checked"; ?>>
+			<?php echo gettext("Suricata will double-decode query string section of the URI.  Default is ") . "<strong>" . gettext("Not Checked") . "</strong>."; ?></td>
+	</tr>
+	<tr>
+		<td width="22%" valign="bottom">&nbsp;</td>
+		<td width="78%" valign="bottom">
+			<input name="Submit" id="submit" type="submit" class="formbtn" value=" Save " title="<?php echo 
+			gettext("Save web server policy engine settings and return to App Parsers tab"); ?>">
+			&nbsp;&nbsp;&nbsp;&nbsp;
+			<input name="Cancel" id="cancel" type="submit" class="formbtn" value="Cancel" title="<?php echo 
+			gettext("Cancel changes and return to App Parsers tab"); ?>"></td>
+	</tr>
+</table>
+</td>
+</tr>
+</table>
+</div>
+</form>
+<?php include("fend.inc"); ?>
+</body>
+<script type="text/javascript" src="/javascript/autosuggest.js">
+</script>
+<script type="text/javascript" src="/javascript/suggestions.js">
+
+<?php
+	$isfirst = 0;
+	$aliases = "";
+	$addrisfirst = 0;
+	$aliasesaddr = "";
+	if(isset($config['aliases']['alias']) && is_array($config['aliases']['alias']))
+		foreach($config['aliases']['alias'] as $alias_name) {
+			if ($alias_name['type'] != "host" && $alias_name['type'] != "network")
+				continue;
+			// Skip any Aliases that resolve to an empty string
+			if (trim(filter_expand_alias($alias_name['name'])) == "")
+				continue;
+			if($addrisfirst == 1) $aliasesaddr .= ",";
+			$aliasesaddr .= "'" . $alias_name['name'] . "'";
+			$addrisfirst = 1;
+		}
+?>
+	var addressarray=new Array(<?php echo $aliasesaddr; ?>);
+
+function createAutoSuggest() {
+<?php
+	echo "objAlias = new AutoSuggestControl(document.getElementById('frag3_bind_to'), new StateSuggestions(addressarray));\n";
+?>
+}
+
+setTimeout("createAutoSuggest();", 500);
+
+</script>
+
+</html>