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

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