PHP-Fusion 9.03.50 – ‘Edit Profile’ Arbitrary File Upload

• Exploit Database
• 20 阅读

• 作者： Besim
  日期： 2020-04-27
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/48381/

• # Exploit Title: PHP-Fusion 9.03.50 - 'Edit Profile' Arbitrary File Upload
  # Date: 2020-04-24
  # Author: Besim ALTINOK
  # Vendor Homepage: https://www.php-fusion.co.uk/home.php
  # Software Link: https://sourceforge.net/projects/php-fusion/files/PHP-Fusion%20Archives/9.x/PHP-Fusion%209.03.50.zip/download
  # Version: v9.03.50
  # Tested on: Xampp
  # Credit: İsmail BOZKURT and AkkuS
  
  -------------------------------------------------------------------------------------------------
  Description
  ---
  - This system does not check the file extension when user upload photo for
  avatar :). So you can upload PHP file like:
  
  Content of the file
  --
  Sample PHP code: <? phpinfo(); ?>
  
  Name of the file:
  ---
  Sample PHP File name: tester.php
  
  - When you want to try to upload the image to the avatar, just, try to
  change the file name and content.
  
  ----------------------------------------------------------------------------------------
  Vulnerable code section in the UserFieldsInput.inc
  ----------------------------------------------------------
  private function _setUserAvatar() {
  if (isset($_POST['delAvatar'])) {
  if ($this->userData['user_avatar'] != "" &&
  file_exists(IMAGES."avatars/".$this->userData['user_avatar']) &&
  is_file(IMAGES."avatars/".$this->userData['user_avatar'])) {
  unlink(IMAGES."avatars/".$this->userData['user_avatar']);
  }
  $this->data['user_avatar'] = '';
  }
  if (isset($_FILES['user_avatar']) &&
  $_FILES['user_avatar']['name']) { // uploaded avatar
  if (!empty($_FILES['user_avatar']) &&
  is_uploaded_file($_FILES['user_avatar']['tmp_name'])) {
  $upload = form_sanitizer($_FILES['user_avatar'], '',
  'user_avatar');
  if (isset($upload['error']) && !$upload['error']) {
  // ^ maybe use empty($upload['error']) also can but
  maybe low end php version has problem on empty.
  $this->data['user_avatar'] = $upload['image_name'];
  }
  }
  }
  }