search

cybelesoft / virtualui

https://www.cybelesoft.com/thinfinity/virtualui/
19 stars 16 forks source link

Vulnerability - External Service Interaction #3

Open danielmofer opened 2 years ago

danielmofer commented 2 years ago

Dear Cybele Software,

My name is Daniel Morales.

I have found a vulnerability in Thinfinity VirtualUI that could allow a malicious actor to trigger a server-side request to external endpoints.

Summary

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? cmd=connect&wscompression=true&destAddr=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" 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

danielmofer commented 2 years ago

Could you tell in which version is it fixed? Thanks in advance.