PHP环境安全性能检查

PHP在Linux环境下安全配置是一个复杂的过程，其中涉及到很多的细节设置，在这里发出来一个脚本，通过这个脚本来检测你的PHP环境是否存在安全隐患，从而针对这些对你的PHP环境进行加固。
功能：

  • 1.检测PHP环境安全配置
  • 2.应禁用的功能。
  • 3.危险的设置，可能会导致本地或远程文件包含。
  • 4.错误处理。
  • 5.在编译时定义的常量。

安装PHP环境后，将此三个文件脚本放在网站web目录下（audit.php php.xml style.css ）进行浏览器查看，他将在你配置的基础中通过XML文件中匹配规则检测出可能存在的配置错误，存在问题的选项它会用红色突出的颜色显示。当然还有一些东西可以根据你的要求更改。
效果如下：

audit.php

  1. <?php
  2. /**
  3. * PHP Security Auditor
  4. */
  5. class Audit {
  6. static private $rules;
  7. static private $constants;
  8. static private $phpVer;
  9. static public $report;
  10. /**
  11. * Converts settings such as 1M 1G 1K to their byte equivilent values
  12. *
  13. * @param string $n
  14. * @return string
  15. */
  16. static private function convertToBytes($n) {
  17. // If n is -1 then there is no limit
  18. if ($n == -1)
  19. return PHP_INT_MAX;
  20. switch (substr($n, -1)) {
  21. case "B": return substr($n,0,-1);
  22. case "K": return substr($n,0,-1) * 1024;
  23. case "M": return substr($n,0,-1) * 1024 * 1024;
  24. case "G": return substr($n,0,-1) * 1024 * 1024 * 1024;
  25. }
  26. return $n;
  27. }
  28. static private function MakeReport($type, $title) {
  29. ksort(self::$report[$type]);
  30. $html = '<h1>' . $title . '</h1><table><tr class="h"><th>Setting</th><th>Current</th><th>Recomended</th><th>Description</th></tr>';
  31. foreach(self::$report[$type] as $key => $values)
  32. {
  33. if ($values['p'] == 1) $class="r";
  34. else $class="v";
  35. $html .= '<tr><td class="e">' . htmlentities($key) . '</td>' .
  36. '<td class=". $class .">' . htmlentities($values['c']) . '</td>' .
  37. '<td class=". $class .">' . htmlentities($values['r']) . '</td>' .
  38. '<td class=". $class .">' . htmlentities($values['d']) . '</td></tr>';
  39. }
  40. $html .= '</table>';
  41. return $html;
  42. }
  43. static public function HTMLReport()
  44. {
  45. $class = "";
  46. $html = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-transitional.dtd">' .
  47. '<html><head>' .
  48. '<link rel="stylesheet" type="text/css" media="all" href="style.css"/>' .
  49. '</head><body>';
  50. $html .= self::MakeReport("ini", "PHP INI");
  51. $html .= self::MakeReport("disabled", "PHP Disabled Functions");
  52. $html .= self::MakeReport("const", "PHP CONST");
  53. $html .= '</html>';
  54. echo($html . "\n");
  55. }
  56. /**
  57. * Adds an item to the reporting array.
  58. *
  59. * @param string $type - the type (ini or const)
  60. * @param string $key - the name of the variable
  61. * @param string $currentValue - the current ini or const value
  62. * @param string $recomended - the recomended value
  63. * @param string $desc - a description of the issue
  64. * @param boolean $problem - true if not complaint, false if compliant
  65. */
  66. static private function Report($type, $key, $currentValue, $recomended, $desc, $problem)
  67. {
  68. if (isset(self::$report[$type][$key]))
  69. if ((self::$report[$type][$key]['r'] < $recomended)
  70. && (self::$report[$type][$key['p']] == 1))
  71. return;
  72. self::$report[$type][$key] = array(
  73. "c" => $currentValue,
  74. "r" => $recomended,
  75. "d" => $desc,
  76. "p" => $problem
  77. );
  78. }
  79. /**
  80. * Loads the rules from an XML file
  81. *
  82. * @param string $file
  83. */
  84. static public function LoadRules($file = "php.xml")
  85. {
  86. if (!defined('PHP_VERSION_ID'))
  87. {
  88. $version = explode(".", PHP_VERSION);
  89. self::$phpVer =  ($version[0] * 10000 + $version[1] * 100 + $version[2]);
  90. } else
  91. self::$phpVer = PHP_VERSION_ID;
  92. self::$constants = get_defined_constants();
  93. self::$rules = simplexml_load_file($file);
  94. }
  95. /**
  96. * Processes the XML ruleset against const and ini values found in PHP
  97. *
  98. */
  99. static public function ProcessXML() {
  100. foreach(self::$rules as $null => $entry) {
  101. $ruleID = $entry->attributes()->id;
  102. // Check the version of PHP the rule applies to
  103. $version = (string)$entry->version;
  104. if ($version != "") {
  105. $op = (string)$entry->version->attributes()->op;
  106. switch ($op) {
  107. case 'before':
  108. if ($version < self::$phpVer)
  109. continue 2;
  110. break;
  111. }
  112. }
  113. // Evaluate the rule as we are sure it applys to the version of PHP running
  114. switch((string)$entry->type)
  115. {
  116. // Look at CONST values in PHP
  117. case "const":
  118. $key = (string)$entry->key; // e.g LIBXML_NOENT
  119. $cValue = self::$constants[$key]; // The current value
  120. $rValue = (string)$entry->value; // The recomended value
  121. $desc = (string)$entry->description; // Description
  122. switch((string)$entry->value->attributes()->op)
  123. {
  124. case "eq":
  125. self::Report("const", $key, $cValue, $rValue, $desc, ($cValue == $rValue) ? 0 : 1);
  126. break;
  127. }
  128. break;
  129. // Check the list of functions that should be restricted
  130. case "disable_functions":
  131. $disabled = ini_get("disable_functions");
  132. $list = explode(",", $disabled);
  133. $xmlList = (array)($entry->list);
  134. $xmlList = $xmlList['function'];
  135. foreach($xmlList as $null => $function) {
  136. $de = array_search($function, $list);
  137. self::Report("disabled", $function, (($de == 0) ? "enabled" : "disabled"), "disabled", "", (($de == 0) ? 1 : 0));
  138. }
  139. break;
  140. // Look at values defined within the INI files
  141. case "ini":
  142. $key = (string)$entry->key; // e.g. display_errors
  143. $cValue = trim(self::convertToBytes(ini_get($key))); // Current value
  144. $rValue = (string)$entry->value; // Recomended value
  145. $desc = (string)$entry->description; // Description
  146. if (is_numeric($rValue) && $cValue == "") $cValue = "0";
  147. // Deals with where one value should be compared to another
  148. if ((string)$entry->value->attributes()->type == "key")
  149. $rValue = self::convertToBytes(ini_get((string)$entry->value));
  150. switch((string)$entry->value->attributes()->op)
  151. {
  152. // Equal to
  153. case "eq":
  154. self::Report("ini", $key, $cValue, $rValue, $desc, ($cValue == $rValue) ? 0 : 1);
  155. break;
  156. // Less than or equal to
  157. case "lt":
  158. self::Report("ini", $key, $cValue, "< $rValue", $desc, ($cValue <= $rValue) ? 0 : 1);
  159. break;
  160. // Greater than or equal to
  161. case "gt":
  162. self::Report("ini", $key, $cValue, "> $rValue", $desc, ($cValue >= $rValue) ? 0 : 1);
  163. break;
  164. // Not equal to
  165. case "ne":
  166. $neValue  = (string)$entry->value->attributes()->net;
  167. $notBlank = (string)$entry->value->attributes()->notblank;
  168. if ($notBlank == "true") {
  169. self::Report("ini", $key, $cValue, $rValue, $desc, ($cValue != "") ? 0 : 1);
  170. break;
  171. }
  172. self::Report("ini", $key, $cValue, $rValue, $desc, ($cValue != $neValue) ? 0 : 1);
  173. break;
  174. }
  175. break;
  176. }
  177. }
  178. }
  179. }
  180. Audit::LoadRules();
  181. Audit::ProcessXML();
  182. Audit::HTMLReport();

php.xml代码如下：

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <rules>
  3. <entry id="1">
  4. <type>ini</type>
  5. <key>upload_max_filesize</key>
  6. <value op="lt">4194304</value>
  7. <description>Sets the maximum size of an uploaded file. Reduce this to mitigate the risk of DOS attacks.</description>
  8. </entry>
  9. <entry id="29">
  10. <type>ini</type>
  11. <key>upload_max_filesize</key>
  12. <value op="lt" type="key">memory_limit</value>
  13. <description>The maximum size of an uploaded file should be able to fit within the avaliable memory limit.</description>
  14. </entry>
  15. <entry id="30">
  16. <type>ini</type>
  17. <key>post_max_size</key>
  18. <value op="lt" type="key">memory_limit</value>
  19. <description>The maximum post size of data posted to the server should be within the avaliable memory limit.</description>
  20. </entry>
  21. <entry id="32">
  22. <type>ini</type>
  23. <key>always_populate_raw_post_data</key>
  24. <value op="eq">0</value>
  25. <description>This does not need to be used. The preferred method for accessing the raw POST data is php://input.</description>
  26. </entry>
  27. <entry id="33">
  28. <type>ini</type>
  29. <key>magic_quotes_gpc</key>
  30. <value op="eq">0</value>
  31. <description>Sets magic_quotes state for GPC (GET PUT COOKIE) data.  Relying on this feature is highly discouraged.</description>
  32. <version op="before">50300</version>
  33. <url>http://www.php.net/manual/en/info.configuration.php#ini.magic-quotes-gpc</url>
  34. </entry>
  35. <entry id="34">
  36. <type>ini</type>
  37. <key>magic_quotes_runtime</key>
  38. <value op="eq">0</value>
  39. <description>Sets magic_quotes state for data from external sources.  Relying on this feature is highly discouraged.</description>
  40. <version op="before">50300</version>
  41. <url>http://www.php.net/manual/en/info.configuration.php#ini.magic-quotes-runtime</url>
  42. </entry>
  43. <entry id="35">
  44. <type>ini</type>
  45. <key>safe_mode</key>
  46. <value op="eq">0</value>
  47. <description>This feature has been DEPRECATED as of PHP 5.3.0. Relying on this feature is highly discouraged.</description>
  48. <version op="before">50300</version>
  49. </entry>
  50. <entry id="36">
  51. <type>ini</type>
  52. <key>memory_limit</key>
  53. <value op="lt">16777216</value>
  54. <description>The maximum memory limit for each script should be 16M or less.</description>
  55. </entry>
  56. <entry id="5">
  57. <type>ini</type>
  58. <key>upload_max_filesize</key>
  59. <value op="lt" type="key">post_max_size</value>
  60. <description>The maximum upload file size should be less than or equal to the maximum post size.</description>
  61. </entry>
  62. <entry id="2">
  63. <type>ini</type>
  64. <key>max_file_uploads</key>
  65. <value op="lt">10</value>
  66. <description>The maximum mumber of files that can be uploaded in 1 go.</description>
  67. </entry>
  68. <entry id="3">
  69. <type>ini</type>
  70. <key>file_uploads</key>
  71. <value op="eq">0</value>
  72. <description>This may be impractical but if not needed file uploading should be disabled.</description>
  73. </entry>
  74. <entry id="4">
  75. <type>ini</type>
  76. <key>post_max_size</key>
  77. <value op="lt">4194304</value>
  78. <description>The maximum post size should as small as reasonably possible to mitigate the risk of DOS attacks.</description>
  79. </entry>
  80. <entry id="6">
  81. <type>ini</type>
  82. <key>register_long_arrays</key>
  83. <value op="eq">0</value>
  84. <description>Populates HTTP_*_VARS which should no longer be used.</description>
  85. <version op="before">50300</version>
  86. </entry>
  87. <entry id="7">
  88. <type>ini</type>
  89. <key>register_globals</key>
  90. <value op="eq">0</value>
  91. <description>Highly dangerous feature enabling variables to be defined in scripts from the GPC paramaters. This should be always be turned off.</description>
  92. <version op="before">50300</version>
  93. </entry>
  94. <entry id="8">
  95. <type>ini</type>
  96. <key>session.hash_function</key>
  97. <value op="eq">1</value>
  98. <description>MD5 should be replaced with SHA-160 as it is a more complex and secure hashing algorithm.</description>
  99. <version op="after">50000</version>
  100. </entry>
  101. <entry id="9">
  102. <type>ini</type>
  103. <key>session.hash_bits_per_character</key>
  104. <value op="gt">5</value>
  105. <description>The number of bits encoded per character of the session key.</description>
  106. <version op="after">50000</version>
  107. </entry>
  108. <entry id="10">
  109. <type>ini</type>
  110. <key>session.entropy_file</key>
  111. <value op="ne" net="">/dev/random</value>
  112. <description>Provides a random seed for generating the session.</description>
  113. </entry>
  114. <entry id="11">
  115. <type>ini</type>
  116. <key>session.entropy_length</key>
  117. <value op="gt">32</value>
  118. <description>The number of bytes to read for gathering entropy for session generation.</description>
  119. </entry>
  120. <entry id="12">
  121. <type>ini</type>
  122. <key>session.name</key>
  123. <value op="ne" net="PHPSESSID">Custom String</value>
  124. <description>The name given to the PHP Session. It is recomended this be changed from the default.</description>
  125. </entry>
  126. <entry id="14">
  127. <type>ini</type>
  128. <key>session.save_path</key>
  129. <value op="ne" net="/tmp" notblank="true">/custom/location</value>
  130. <description>The save path for the session should be changed from the default /tmp.</description>
  131. </entry>
  132. <entry id="15">
  133. <type>ini</type>
  134. <key>session.use_trans_sid</key>
  135. <value op="eq">0</value>
  136. <description>Sessions should not be allowed in GET paramaters.</description>
  137. </entry>
  138. <entry id="18">
  139. <type>ini</type>
  140. <key>display_errors</key>
  141. <value op="eq">0</value>
  142. <description>Error messages should be suppressed</description>
  143. </entry>
  144. <entry id="19">
  145. <type>ini</type>
  146. <key>allow_url_fopen</key>
  147. <value op="eq">0</value>
  148. <description>Remote files should not be accessable using fopen.</description>
  149. </entry>
  150. <entry id="20">
  151. <type>ini</type>
  152. <key>allow_url_include</key>
  153. <value op="eq">0</value>
  154. <description>You should not be able to include remote scripts using include.</description>
  155. </entry>
  156. <entry id="31">
  157. <type>ini</type>
  158. <key>session.cookie_httponly</key>
  159. <value op="eq">1</value>
  160. <description>Cookies must be httponly by default</description>
  161. <version op="after">50200</version>
  162. </entry>
  163. <entry id="20">
  164. <type>ini</type>
  165. <key>open_basedir</key>
  166. <value op="ne" net="/" notblank="true">/the/webroot</value>
  167. <description>Limit the files that can be opened by PHP to the webroot.</description>
  168. </entry>
  169. <entry id="32">
  170. <type>ini</type>
  171. <key>upload_tmp_dir</key>
  172. <value op="ne" net="/tmp" notblank="true">/custom/location</value>
  173. <description>Change the location of where files are initally uploaded to</description>
  174. </entry>
  175. <entry id="21">
  176. <type>ini</type>
  177. <key>max_execution_time</key>
  178. <value op="lt">20</value>
  179. <description>Execution time should be limited to 20 seconds or less.</description>
  180. </entry>
  181. <entry id="22">
  182. <type>ini</type>
  183. <key>max_input_nesting_level</key>
  184. <value op="lt">32</value>
  185. <description>Maximum level of nesting of objects 32 is sufficent.</description>
  186. </entry>
  187. <entry id="23">
  188. <type>ini</type>
  189. <key>enable_dl</key>
  190. <value op="eq">0</value>
  191. <description>Disable loading of dynamic extensions.</description>
  192. </entry>
  193. <entry id="24">
  194. <type>ini</type>
  195. <key>display_startup_errors</key>
  196. <value op="eq">0</value>
  197. <description>Startup errors should be suppressed.</description>
  198. </entry>
  199. <entry id="25">
  200. <type>ini</type>
  201. <key>log_errors</key>
  202. <value op="eq">1</value>
  203. <description>All errors generated by PHP should be logged to a file.</description>
  204. </entry>
  205. <entry id="26">
  206. <type>ini</type>
  207. <key>log_errors_max_len</key>
  208. <value op="gt">2048</value>
  209. <description>At least 2048 characters of the error message should be stored in the error log.</description>
  210. </entry>
  211. <entry id="27">
  212. <type>ini</type>
  213. <key>error_log</key>
  214. <value op="ne" net="">/custom/location</value>
  215. <description>Should be set to the location of the php error log.</description>
  216. </entry>
  217. <entry id="28">
  218. <type>const</type>
  219. <key>LIBXML_NOENT</key>
  220. <value op="eq">0</value>
  221. <description>External entities should be disabled for XML parsing</description>
  222. </entry>
  223. <entry id="37">
  224. <type>ini</type>
  225. <key>session.use_only_cookies</key>
  226. <value op="eq">1</value>
  227. <description>Session variables should only be passed in cookies.</description>
  228. </entry>
  229. <entry id="29">
  230. <type>const</type>
  231. <key>LIBXML_NONET</key>
  232. <value op="eq">0</value>
  233. <description>Network access for XML parsers should be disabled.</description>
  234. </entry>
  235. <entry id="38">
  236. <type>disable_functions</type>
  237. <list>
  238. <function>fsocket_open</function>
  239. <function>pack</function>
  240. <function>escapeshellarg</function>
  241. <function>escapeshellcmd</function>
  242. <function>exec</function>
  243. <function>passthru</function>
  244. <function>proc_close</function>
  245. <function>php_uname</function>
  246. <function>getmyuid</function>
  247. <function>getmypid</function>
  248. <function>passthru</function>
  249. <function>leak</function>
  250. <function>listen</function>
  251. <function>diskfreespace</function>
  252. <function>tmpfile</function>
  253. <function>link</function>
  254. <function>ignore_user_abort</function>
  255. <function>set_time_limit</function>
  256. <function>limit</function>
  257. <function>exec</function>
  258. <function>highlight_file</function>
  259. <function>show_source</function>
  260. <function>fpaththru</function>
  261. <function>virtual</function>
  262. <function>posix_ctermid</function>
  263. <function>posix_getcwd</function>
  264. <function>posix_getegid</function>
  265. <function>posix_geteuid</function>
  266. <function>posix_getgid</function>
  267. <function>posix_getgrgid</function>
  268. <function>posix_getgrnam</function>
  269. <function>posix_getgroups</function>
  270. <function>posix_getlogin</function>
  271. <function>posix_getpgid</function>
  272. <function>posix_getpgrp</function>
  273. <function>posix_getpid</function>
  274. <function>posix</function>
  275. <function>posix_getpwnam</function>
  276. <function>posix_getpwuid</function>
  277. <function>posix_getrlimit</function>
  278. <function>posix_getsid</function>
  279. <function>posix_getuid</function>
  280. <function>posix_isatty</function>
  281. <function>posix_kill</function>
  282. <function>posix_mkfifo</function>
  283. <function>posix_setegid</function>
  284. <function>posix_seteuid</function>
  285. <function>posix_setgid</function>
  286. <function>posix_setpgid</function>
  287. <function>posix_setsid</function>
  288. <function>posix_setuid</function>
  289. <function>posix_times</function>
  290. <function>posix_ttyname</function>
  291. <function>posix_uname</function>
  292. <function>proc_open</function>
  293. <function>proc_close</function>
  294. <function>proc_get_status</function>
  295. <function>proc_nice</function>
  296. <function>proc_terminate</function>
  297. <function>phpinfo</function>
  298. <function>proc_open</function>
  299. <function>shell_exec</function>
  300. <function>system</function>
  301. <function>set_time_limit</function>
  302. <function>ini_alter</function>
  303. <function>dl</function>
  304. <function>popen</function>
  305. <function>parse_ini_file</function>
  306. </list>
  307. </entry>
  308. </rules>

style.css代码如下：

  1. @CHARSET "UTF-8";
  2. body { color: #000000;}
  3. body, td, th, h1, h2 {font-family: sans-serif;}
  4. pre {margin: 0px; font-family: monospace;}
  5. table {border-collapse: collapse;}
  6. td, th { border: 1px solid #000000; font-size: 75%; vertical-align: baseline;  padding-left:5px; padding-right:5px;}
  7. h1 {font-size: 150%;}
  8. h2 {font-size: 125%;}
  9. .p {text-align: left;}
  10. .e { font-weight: bold; color: #000000;}
  11. .h {background-color: #9999cc; font-weight: bold; color: #000000;}
  12. .v { color: #000000; padding-left:5px;}
  13. .r {background-color: #c50000; color: #000000;  padding-left:5px;}

三个文件已经打包：php-security-check.zip
转自：http://lanlan611.sinaapp.com/?p=112

转载请标明文章来源:《https://www.centos.bz/2012/03/php-security-check/》

转载于:https://www.cnblogs.com/L-H-R-X-hehe/p/3955084.html

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