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Stored Xss Vulnerability through Iframe Injection on subrion CMS ver 4.0.3 #881

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viperbluff opened this issue Dec 27, 2020 · 0 comments

viperbluff commented Dec 27, 2020

Hello

I have found stored cross site scripting bug in subrion CMS version 4.0.3 in the Create Page functionality of the admin Account.

Steps to Reproduce:

Go to https://demos.subrion.org/?demo=core&admin=1
As an admin Create a page
In the Add a Page section go to the page content block and select IFRAME from the toolbar
In the IFRAME box give URL as javascript:prompt("xss")
Click on Add button at the bottom , a page will be created
Search for the Page using the Name and click on search
Xss prompt box will pop up

Impact: Session cookies can be stolen , user can be redirected to phishing pages , browser of the user visiting this page can be controlled etc.

POC's have been uploaded.

Fix: Please sanitize the input taken from the user before directly storing the input at the backend.

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