phpcmsV9某sql注射漏洞下载

phpcmsV9某sql注入漏洞别人说最危险的地方最安全，我说最安全的地方最危险。。。
相信你们也没有想到这个最常见，常常会在各种教程出现的地方会存在SQL注射。。。
需 GPC OFF

首先，我们看登陆的地方。。最常见了吧。。。

http://127.0.0.1/index.php?m=member&c=index&a=login



默认安装情况下，会使有 V9自带的用户中心。



phpcms\modules\member\index.php

 

public function login() {

		$this->_session_start();

		//获取用户siteid

		$siteid = isset($_REQUEST['siteid']) && trim($_REQUEST['siteid']) ? intval($_REQUEST['siteid']) : 1;

		//定义站点id常量

		if (!defined('SITEID')) {

		   define('SITEID', $siteid);

		}

		

		if(isset($_POST['dosubmit'])) {

			if(empty($_SESSION['connectid'])) {

				//判断验证码

				$code = isset($_POST['code']) && trim($_POST['code']) ? trim($_POST['code']) : showmessage(L('input_code'), HTTP_REFERER);

				if ($_SESSION['code'] != strtolower($code)) {

					showmessage(L('code_error'), HTTP_REFERER);

				}

			}

			

			$username = isset($_POST['username']) && trim($_POST['username']) ? trim($_POST['username']) : showmessage(L('username_empty'), HTTP_REFERER);

			$password = isset($_POST['password']) && trim($_POST['password']) ? trim($_POST['password']) : showmessage(L('password_empty'), HTTP_REFERER);

			$cookietime = intval($_POST['cookietime']);

			$synloginstr = ''; //同步登陆js代码

			

			if(pc_base::load_config('system', 'phpsso')) {

				$this->_init_phpsso();

				$status = $this->client->ps_member_login($username, $password);

				$memberinfo = unserialize($status);

可以看到用户名密码交给了

$this->client->ps_member_login($username, $password);



我们跟进。

phpcms\modules\member\classes\client.class.php



$return = $this->_ps_send('login', array('username'=>$username, 'password'=>$password));



 

private function _ps_send($action, $data = null) {

 		return $this->_ps_post($this->ps_api_url."/index.php?m=phpsso&c=index&a=".$action, 500000, $this->auth_data($data));

	}

public function auth_data($data) {

		$s = $sep = '';

		foreach($data as $k => $v) {

			if(is_array($v)) {

				$s2 = $sep2 = '';

				foreach($v as $k2 => $v2) {

						$s2 .= "$sep2{$k}[$k2]=".$this->_ps_stripslashes($v2);

					$sep2 = '&';

				}

				$s .= $sep.$s2;

			} else {

				$s .= "$sep$k=".$this->_ps_stripslashes($v);

			}

			$sep = '&';

		}



		$auth_s = 'v='.$this->ps_vsersion.'&appid='.APPID.'&data='.urlencode($this->sys_auth($s));

		return $auth_s;

	}

_ps_stripslashes

 

private function _ps_stripslashes($string) {

		!defined('MAGIC_QUOTES_GPC') && define('MAGIC_QUOTES_GPC', get_magic_quotes_gpc());

		if(MAGIC_QUOTES_GPC) {

			return stripslashes($string);

		} else {

			return $string;

		}

	}

还原了 GPC，传参数给 API。

我们再看看 API 方的处理方式



phpsso_server\phpcms\modules\phpsso\classes\phpsso.class.php

 

if(isset($_POST['data'])) {

			parse_str(sys_auth($_POST['data'], 'DECODE', $this->applist[$this->appid]['authkey']), $this->data);

					

			if(!is_array($this->data)) {

				exit('0');

			}

		} else {

			exit('0');

		}

parse_str 函数默认是根据 GPC情况过滤。



再到



phpsso_server\phpcms\modules\phpsso\index.php



 

public function login() {

		$this->password = isset($this->data['password']) ? $this->data['password'] : '';

		$this->email = isset($this->data['email']) ? $this->data['email'] : '';

		if($this->email) {

			$userinfo = $this->db->get_one(array('email'=>$this->email));

		} else {

			$userinfo = $this->db->get_one(array('username'=>$this->username));

		}

phpsso_server\phpcms\libs\classes\model.class.php

 

final public function get_one($where = '', $data = '*', $order = '', $group = '') {

		if (is_array($where)) $where = $this->sqls($where);

		return $this->db->get_one($data, $this->table_name, $where, $order, $group);

	}

/**

	 * 将数组转换为SQL语句

	 * @param array $where 要生成的数组

	 * @param string $font 连接串。

	 */

	final public function sqls($where, $font = ' AND ') {

		if (is_array($where)) {

			$sql = '';

			foreach ($where as $key=>$val) {

				$sql .= $sql ? " $font `$key` = '$val' " : " `$key` = '$val'";

			}

			return $sql;

		} else {

			return $where;

		}

	}