CMS Made Simple 2.2.15 SQL Injection

`1) Summary  
  
Affected software CMS Made Simple-2.2.15  
Vendor URLhttp://www.cmsmadesimple.org/ <http://www.cmsmadesimple.org/>  
Vulnerability SQL injection  
  
2) Vulnerability Description  
  
The affected software is vulnerable to SQL injection via the m1_sortby POST parameter of the News module, reachable via the moduleinterface.php page.  
The `sortby` parameter is sanitized by replacing the `'` with the `_` character, anyway it is possible to inject arbitrary SQL language without using the `'`.  
This vulnerability is remotely exploitable and require authentication.  
  
3) PoC and details  
  
https://github.com/beerpwn/CVE/blob/master/cms_made_simple_2021/sqli_order_by/CMS-MS-SQLi-report.md  
  
4) Credits  
  
This vulnerability has been discovered and reported  
by Riccardo Krauter researcher @ Soter IT Security (soteritsecurity.com).  
  
5) Timeline  
  
2021/02/22 Vendor was informed  
2021/02/26 Vendor said he won't fix  
2021/03/17 Public disclosure  
  
  
  
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