5 * @author Roland Haeder <webmaster@shipsimu.org>
7 * @copyright Copyright (c) 2009 - 2017 Cracker Tracker Team
8 * @license GNU GPL 3.0 or any newer version
9 * @link http://www.shipsimu.org
11 * This program is free software: you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation, either version 3 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program. If not, see <http://www.gnu.org/licenses/>.
25 // Initializes all detector arrays
26 function initCrackerTrackerArrays () {
27 // Set error_reporting
28 if (isCrackerTrackerDebug()) {
29 // For debugging purposes, this is fine
30 @error_reporting(E_ALL | E_STRICT);
37 $GLOBALS['ctracker_base_path'] = dirname(dirname(__FILE__));
39 // Whitelist some absolute query strings (see below)
40 $GLOBALS['ctracker_whitelist'] = [
43 'cmd=lostpw', // LinPHA
44 '/css/status_config.php', // MantisBT
45 '/css/common_config.php', // MantisBT
46 '/javascript_config.php', // MantisBT
49 // Attacks we should detect and block
50 $GLOBALS['ctracker_get_blacklist'] = [
52 'union ', ' union', 'insert ',
53 'select ', ' like', 'like ', 'drop ', 'update ',
56 // $GLOBAL/$_SERVER array elements
57 'HTTP_USER_AGENT', 'HTTP_HOST', 'HTTP_PHP', '_SESSION', 'CFG_ROOT',
58 'DOCUMENT_ROOT', '_SERVER',
61 '/environ', 'etc/shadow', 'etc/gshadow', 'etc/passwd', 'etc/group',
62 'etc/./shadow', 'etc/./gshadow', 'etc/./passwd', 'etc/./group',
63 '.htaccess', '.htpasswd', '.htgroup', '.history', 'bash_history',
66 // Other Linux/FreeBSD/??? programs (sometimes with space)
67 'traceroute ', 'ping ', 'bin/xterm', 'bin/./xterm', 'lsof ',
68 'telnet ', 'wget ', 'bin/perl', 'bin/id', 'uname\x20', 'uname ',
69 'killall', 'diff ', 'kill ', 'locate ', 'grep ', 'vi ', 'mv ',
70 'rmdir ', 'mcd ', 'mrd ', 'rm ', ' mcd', ' mrd', ' rm',
71 'passwd ', ' passwd', 'mdir ', ' mdir', 'cp ', ' cp',
72 'esystem ', 'chr ', ' chr', 'wget ', ' wget', ' cmd',
73 'cmd ', ' rush', 'rush ', ' echr', 'echr ', ' getenv',
74 'getenv', 'reboot ', 'halt ', 'powerdown ',
76 // Other Linux programs (+ brace)
77 'locate(', 'grep(', 'kill(', 'mcd(', 'mrd(', 'rm(', 'mv(', 'rmdir(',
78 'chmod(', 'chmod(', 'chown(', 'chgrp(', 'passwd(', 'vi(', 'cp(',
79 'mdir(', 'system(', 'chr(', 'wget(', 'rush(', 'echr(',
81 // Other Linux programs (+ equal)
82 'mcd=', 'mrd=', 'chmod=', 'chr=', 'rush=', 'echr=',
85 '/etc/', '/bin/', '/sbin/', '/self/', '/proc/', '../../','..//', '././',
86 '/home/ftp', '/home/./ftp', '/home/./www', '/home/www', '/www/virtual/',
90 '/chgrp', '/chown', '/chmod', 'chown ', 'chmod ', 'chgrp ',
92 // Compiler/interpreter
93 'bin/g++ ', 'bin/c++ ', 'cc ', 'bin/python', 'bin/python', 'bin/tclsh',
94 'bin/tclsh', 'bin/nasm', '/perl', 'cmd.exe',
98 'allow_url_fopen', 'allow_url_include', 'auto_prepend_file', 'disable_functions', 'safe_mode',
99 'open_basedir', 'suhosin', 'cgi.force_redirect', 'cgi.redirect_status_env',
101 // PHP commands/scripts
102 'fopen', 'fwrite', 'phpinfo()', '\<?', '?\>', 'base64_decode', 'file_put_contents',
103 'set_magic_quotes_runtime', 'set_magic_quotes_runtime', 'display_errors', 'passthru',
106 // Typical PHP script remote-inclusions and typical include file names
107 '.inc.php', '.lib.php', '.class.php', 'config.php', '.inc', '_php',
108 'php_', 'class_', '_class.php', 'db_mysql.inc',
111 '_phplib', '__callbackparam',
113 // Generic remote inclusion
114 '=http://', '=https://', '=php://',
116 '=%7BQUOT%7D', '=%5C', '=%22http','=%22ftp','=%22file','=%27http','=%27ftp',
120 'data://', 'tcp://', 'udp://', 'raw://', 'javascript://', 'file://', 'ftp://',
123 'nigga(', ' nigga', 'nigga ', 'starhack', 'busca',
126 ' style=', 'style =',
127 'overflow:auto', 'overflow: auto',
128 'overflow :auto', 'overflow : auto',
129 'display:hidden', 'display: hidden',
130 'display :hidden', 'display : hidden',
131 'height:0px', 'height: 0px','height:1px', 'height: 1px',
132 'width:0px', 'width: 0px','width:1px', 'width: 1px',
134 // Uncommon user websites
135 '~root', '~ftp', '~nobody',
137 // Windows XP (?) hacks
138 'xp_enumdsn', 'xp_availablemedia', 'xp_filelist', 'xp_cmdshell',
140 // Attempts to insert links into a badly secured URL
143 // Request header being inserted
146 // /proc/ and other forbidden paths
149 // MySQL internal functions
152 // @TODO Misc/unsorted
153 'cgi-', '.eml', '$_request', '$_get', '$request', '$get', '.system',
154 '&aim', 'new_password', '&icq', '.conf', 'motd ', 'HTTP/1.',
155 'window.open', 'img src', 'img src', '.jsp', 'servlet', 'org.apache',
156 'wwwacl', 'server-info', 'server-status', '/servlet/con', 'http_',
157 'secure_site, ok', 'chunked', '<script', 'mod_gzip_status', '.system',
158 'uol.com', ',0x', '(0x', 'INSERT_RANDOM_NUMBER_HERE', 'addtype'
161 // BLock these words found in User-Agent
162 $GLOBALS['ctracker_ua_blacklist'] = [
163 // Compiler/interpreter
164 'bin/g++ ', 'bin/c++ ', 'cc ', 'bin/python', 'bin/python', 'bin/tclsh',
165 'bin/tclsh', 'bin/nasm', '/perl', 'cmd.exe',
166 'nc.exe', 'ftp.exe', 'wget ', 'system(', 'curl ',
169 'allow_url_fopen', 'allow_url_include', 'auto_prepend_file', 'disable_functions', 'safe_mode',
171 // PHP commands/scripts
172 'fopen', 'fwrite', 'phpinfo()', '\<?', '?\>', 'base64_decode', 'file_put_contents',
173 'set_magic_quotes_runtime', 'set_magic_quotes_runtime', 'display_errors', 'passthru',
175 // Typical PHP script remote-inclusions and typical include file names
176 '.inc.php', '.lib.php', '.class.php', 'config.php', '.inc', '_php',
177 'php_', 'class_', '_class.php', 'db_mysql.inc',
180 '_phplib', '__callbackparam',
182 // Request header being inserted
185 // /proc/ and other forbidden paths
189 // BLock these words found in User-Agent
190 $GLOBALS['ctracker_ua_blacklist'] = array(
191 // Compiler/interpreter
192 'bin/g++ ', 'bin/c++ ', 'cc ', 'bin/python', 'bin/python', 'bin/tclsh',
193 'bin/tclsh', 'bin/nasm', '/perl', 'cmd.exe',
194 'nc.exe', 'ftp.exe', 'wget ', 'system(', 'curl ',
197 'allow_url_fopen', 'allow_url_include', 'auto_prepend_file', 'disable_functions', 'safe_mode',
199 // PHP commands/scripts
200 'fopen', 'fwrite', 'phpinfo()', '\<?', '?\>', 'base64_decode', 'file_put_contents',
201 'set_magic_quotes_runtime', 'set_magic_quotes_runtime', 'display_errors', 'passthru',
203 // Typical PHP script remote-inclusions and typical include file names
204 '.inc.php', '.lib.php', '.class.php', 'config.php', '.inc', '_php',
205 'php_', 'class_', '_class.php', 'db_mysql.inc',
208 '_phplib', '__callbackparam',
210 // Request header being inserted
213 // /proc/ and other forbidden paths
217 // Block these words found in POST requests
218 $GLOBALS['ctracker_post_blacklist'] = [
219 // This line is for detecting hidden link spam in wikis, forums, guestbooks, etc.
220 ' style=', 'overflow:auto', 'height:1px', 'width:1px', 'display:hidden', 'style.display',
222 // "Common" login names from VHCS exploiters ;-)
223 'starhack', 'DeLiMehmet', 'hisset', 'Hisset', 'delimert', 'MecTruy'
226 // Also block these requests (mostly you don't want CONNECT to some SMTP sites)
227 $GLOBALS['ctracker_blocked_methods'] = [
231 // Init more elements
232 $GLOBALS['ctracker_post_track'] = '';
233 $GLOBALS['ctracker_checked_get'] = '';
234 $GLOBALS['ctracker_checked_post'] = '';
235 $GLOBALS['ctracker_checked_ua'] = '';
239 function isCrackerTrackerWormDetected () {
240 // Check against the whole list
241 $GLOBALS['ctracker_checked_get'] = urldecode(str_ireplace($GLOBALS['ctracker_get_blacklist'], '*', crackerTrackerQueryString(TRUE)));
242 $GLOBALS['ctracker_checked_ua'] = urldecode(str_ireplace($GLOBALS['ctracker_ua_blacklist'], '*', crackerTrackerUserAgent(TRUE)));
245 * If it differs to original and the *whole* request string is not in
246 * whitelist then blog the attempt.
250 $GLOBALS['ctracker_checked_get'] != crackerTrackerQueryString(TRUE) && (!in_array(crackerTrackerQueryString(TRUE), $GLOBALS['ctracker_whitelist']))
252 $GLOBALS['ctracker_checked_ua'] != crackerTrackerUserAgent(TRUE)
254 isset($GLOBALS['ctracker_blocked_methods'][crackerTrackerRequestMethod()])
257 //* DEBUG-DIE: */ die('isWorm='.intval($isWorm).PHP_EOL.'get='.PHP_EOL.'"'.$GLOBALS['ctracker_checked_get'].'"'.PHP_EOL.'"'.crackerTrackerQueryString().'"'.PHP_EOL.'ua='.PHP_EOL.'"'.$GLOBALS['ctracker_checked_ua'].'"'.PHP_EOL.'"'.crackerTrackerUserAgent().'"'.PHP_EOL);
264 function isCrackerTrackerPostAttackDetected () {
265 // Implode recursive the whole $_POST array
266 $GLOBALS['ctracker_post_track'] = urldecode(implode_r('&', $_POST));
268 // Check for suspicious POST data
269 $GLOBALS['ctracker_checked_post'] = urldecode(str_ireplace($GLOBALS['ctracker_post_blacklist'], '*', crackerTrackerSanitize($GLOBALS['ctracker_post_track'])));
272 return ((isCrackerTrackerWormDetected()) || ($GLOBALS['ctracker_checked_post'] != crackerTrackerSanitize($GLOBALS['ctracker_post_track'])));
275 // Prepares a mail and send it out
276 function sendCrackerTrackerMail () {
278 crackerTrackerLogAttack();
281 $mail = 'Attack detected:
282 -----------------------------------------------------
283 Remote-IP : ' . determineCrackerTrackerRealRemoteAddress() . '
284 User-Agent : ' . crackerTrackerUserAgent() . '
285 Request-string : ' . crackerTrackerQueryString() . '
286 Filtered string : ' . $GLOBALS['ctracker_checked_get'] . '
287 Server : ' . crackerTrackerServerName() . '
288 Script : ' . crackerTrackerScriptName() . '
289 Method : ' . crackerTrackerRequestMethod() . '
290 Referrer : ' . crackerTrackerReferer() . '
291 -----------------------------------------------------
295 crackerTrackerSendMail($mail);
301 // Sends the ticket emails out
302 function sendCrackerTrackerTicketMails () {
303 // Load user template
304 $mail = crackerTrackerLoadEmailTemplate('user_add_ticket', $GLOBALS['ctracker_last_ticket']);
306 // Send email to the user
307 crackerTrackerSendMail($mail, $GLOBALS['ctracker_last_ticket']['ctracker_ticket_email'], getCrackerTrackerLocalized('user_add_ticket_subject'));
309 // Load webmaster template
310 $mail = crackerTrackerLoadEmailTemplate('webmaster_add_ticket', $GLOBALS['ctracker_last_ticket'], getCrackerTrackerConfig('ctracker_language'));
312 // Send email to the user
313 crackerTrackerSendMail($mail, NULL, getCrackerTrackerLocalized('webmaster_add_ticket_subject'));
317 function crackerTrackerSendMail ($mail, $recipient = NULL, $subject = NULL) {
318 // Construct dummy array
320 'remote_addr' => determineCrackerTrackerRealRemoteAddress(),
321 'proxy_addr' => getenv('REMOTE_ADDR'),
322 'check_get' => $GLOBALS['ctracker_checked_get'],
323 'server_name' => crackerTrackerServerName(),
324 'request_method' => crackerTrackerRequestMethod(),
327 // Only send email if not yet found
328 if (!isCrackerTrackerEntryFound($rowData)) {
329 // Send the email out only in non-debug mode
330 if (isCrackerTrackerDebug()) {
332 print 'Recipient=' . $recipient . '<br />Subject=' . $subject . '<br />Text=<pre>' . $mail . '</pre>';
336 } elseif (!is_null($recipient)) {
337 // Recipient specified
338 return mail($recipient, $subject, $mail, $GLOBALS['ctracker_header']);
339 } elseif (isset($GLOBALS['ctracker_email'])) {
341 return mail($GLOBALS['ctracker_email'], 'CTracker: Attack detected!', $mail, $GLOBALS['ctracker_header']);
343 // Send it the deprecated way with constant
344 return mail(constant('__CTRACKER_EMAIL'), 'CTracker: Attack detected!', $mail, $GLOBALS['ctracker_header']);
346 } elseif (isCrackerTrackerDebug()) {
348 print 'Recipient=' . $recipient . '<br />Subject=' . $subject . '<br />Text=<pre>' . $mail . '</pre>';
355 // Sends a detected POST attack mail
356 function sendCrackerTrackerPostMail () {
358 crackerTrackerLogAttack();
361 $mail = 'POST-Attack detected:
362 -----------------------------------------------------
363 Remote-IP : ' . determineCrackerTrackerRealRemoteAddress() . '
364 User-Agent : ' . crackerTrackerUserAgent() . '
365 Request-string : ' . crackerTrackerQueryString() . '
366 Filtered string : ' . $GLOBALS['ctracker_checked_get'] . '
367 Server : ' . crackerTrackerServerName() . '
368 Script : ' . crackerTrackerScriptName() . '
369 Method : ' . crackerTrackerRequestMethod() . '
370 Referrer : ' . crackerTrackerReferer() . '
371 -----------------------------------------------------
372 POST string : ' . $GLOBALS['ctracker_post_track'] . '
373 Filtered POST string : ' . $GLOBALS['ctracker_checked_post'] . '
374 -----------------------------------------------------
378 crackerTrackerSendMail($mail);
384 // Sleeps for a random time and aborts the script
385 function crackerTrackerDie () {
386 // Close database link
387 crackerTrackerCloseDatabaseLink();
389 // Do only sleep if debug/developer mode is not enabled
390 if (!isCrackerTrackerDebug()) {
391 // Sleep a little to waste the attacker's time
392 sleep(mt_rand(10,30));
396 if (isCrackerTrackerDebug()) {
397 // With debug backtrace in debug/developer mode
399 debug_print_backtrace();
407 // Logs the attack attempt
408 function crackerTrackerLogAttack () {
409 // Aquire database link
410 aquireCrackerTrackerDatabaseLink();
412 // By default no proxy is used
415 // Did the attacker use a proxy?
416 if (isCrackerTrackerProxyUsed()) {
421 // Prepare array for database insert
423 'remote_addr' => determineCrackerTrackerRealRemoteAddress(),
424 'proxy_addr' => getenv('REMOTE_ADDR'),
425 'user_agent' => crackerTrackerUserAgent(),
426 'get_data' => crackerTrackerQueryString(),
427 'post_data' => $GLOBALS['ctracker_post_track'],
428 'check_ua' => $GLOBALS['ctracker_checked_ua'],
429 'check_get' => $GLOBALS['ctracker_checked_get'],
430 'check_post' => $GLOBALS['ctracker_checked_post'],
431 'server_name' => crackerTrackerServerName(),
432 'script_name' => crackerTrackerScriptName(),
433 'referer' => crackerTrackerReferer(),
434 'request_method' => crackerTrackerRequestMethod(),
435 'proxy_used' => $proxyUsed,
436 'first_attempt' => 'NOW()'
439 // Insert the array in database
440 crackerTrackerInsertArray('ctracker_data', $rowData);
443 // Alerts the current user about malicious/suspicious traffic
444 function crackerTrackerAlertCurrentUser () {
445 // Is there some data?
446 if (isset($GLOBALS['ctracker_last_suspicious_entry'])) {
447 // Does the user have a ticket?
448 if (ifCrackerTrackerIpHasTicket()) {
449 // Load "Thank you" template
450 crackerTrackerLoadTemplate('add_ticket_thanks');
451 } elseif ((isset($_POST['ctracker_add_ticket'])) && (!empty($_POST['name'])) && (!empty($_POST['email']))) {
453 addCrackerTrackerTicket($_POST);
455 // Send the email out
456 sendCrackerTrackerTicketMails();
458 // Display the form for new ticket
459 crackerTrackerLoadTemplate('add_ticket');