QCMS 1.6 小漏洞

转自：http://t00ls.net/viewthread.php?tid=19810&extra=page%3D1%26amp%3Borderby%3Ddateline%26amp%3Bfilter%3D2592000

百度和GG告诉我太少人用了 所以放出来 

问题出在后台登录验证

private function _admin_login()
        {
                if((!empty($_REQUEST['api']) || $_REQUEST['api'] == $this->p_site['connect']) || $_COOKIE['api'] == $this->p_site['connect']){
                        setcookie ("api", $this->p_site['connect'], time() + 31536000, "/");
                        return;
                }
                if(empty($_COOKIE['user']['username']) || empty($_COOKIE['user']['level']) || empty($_COOKIE['user']['password']))
                {
                        exec_script('window.top.location.href="'.SITEPATH.'"');return;//什么年代了还COOKIES
                }
                $user_obj = self::load_model('Q_User');       
                $result = $user_obj->select(array('username' => $_COOKIE['user']['username'], 'password' => $_COOKIE['user']['password'], 'level' => $_COOKIE['user']['level']));
                  //上面是验证COOKIES里的帐号密码和用户权限
                if(!$result)
                {
                        exec_script('window.top.location.href="'.SITEPATH.'"');return;
                }       
        }
       
//问题不在上面 问题是exec_script.......
function exec_script($str) { echo '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><script>'.$str.'</script>'; }

补充下：7楼宝宝说了下 感概有道理

说明下怎么意思  首先

        if(empty($_COOKIE['user']['username']) || empty($_COOKIE['user']['level']) || empty($_COOKIE['user']['password']))

                {exec_script('window.top.location.href="'.SITEPATH.'"');return;//什么年代了还COOKIES 这里可以构建COOKIES去绕过 不管数值对和不对

至于怎么构建 火狐浏览器有COOKIES EDIT插件 不会用的话 百度搜索老兵COOKIES欺骗浏览器 估计能找到

然后程序是验证COOKIES里的帐号密码 权限有没有存在

$user_obj = self::load_model('Q_User');      
                $result = $user_obj->select(array('username' => $_COOKIE['user']['username'], 'password' => $_COOKIE['user']['password'], 'level' => $_COOKIE['user']['level']));如果不存在 那么

if(!$result)
                {
                        exec_script('window.top.location.href="'.SITEPATH.'"');return;跳转回去登录界面

问题在于  exec_script 这个自定义函数

function exec_script($str) { echo '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><script>'.$str.'</script>'; }这里是输出脚本 但聪明的你一定知道关闭浏览器脚本去绕过 就是不执行这个动态脚本