安全基础知识

PHPCMS V9 (plugin.php)本地文件包含漏洞hellxman

影响版本:

PHPCMS V9.1.8 (20111014)

漏洞描述:

由于文件/plugin.php对于用户提交的变量未过滤,导致本地文件包含漏洞的产生。相关代码如下:文件plugin.phpif(isset($_GET['id'])) {	list($identification, $filename,$action) = explode('-', $_GET['id']);	$filename = !empty($filename) ? $filename : $identification;	$action = !empty($action) ? $action : 'init';}$cache = getcache($identification,'plugins');变量$identification的值来源于$_GET['id'],并进入函数getcache中Getcache函数在文件/ phpcms/libs/functions/ global.func.php中function getcache($name, $filepath='', $type='file', $config='') {	pc_base::load_sys_class('cache_factory','',0);	if($config) {		$cacheconfig = pc_base::load_config('cache');		$cache = cache_factory::get_instance($cacheconfig)->get_cache($config);	} else {		$cache = cache_factory::get_instance()->get_cache($type);	}	return $cache->get($name, '', '', $filepath);}$cache->get()在文件/phpcms/libs/classes/cache_file.class.phppublic function get($name, $setting = '', $type = 'data', $module = ROUTE_M) {		$this->get_setting($setting);		if(empty($type)) $type = 'data';		if(empty($module)) $module = ROUTE_M;		$filepath = CACHE_PATH.'caches_'.$module.'/caches_'.$type.'/';		$filename = $name.$this->_setting['suf'];		if (!file_exists($filepath.$filename)) {			return false;		} else {		    if($this->_setting['type'] == 'array') {		    	$data = @require($filepath.$filename);最终$_GET['id']变量变为$filename的一部分

测试方法:

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 http://hellxman.blog.51cto.com/phpcms/plugin.php?id=可控文件名-1-1:

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