Maianaffiliate Cross-site Scripting

A PHP code injection vulnerability in MaianAffiliate v.1.0 allows an authenticated attacker to gain RCE through the MaianAffiliate admin panel. (2022-06-16, CVE-2021-41421)

A stored XSS vulnerability in MaianAffiliate v.1.0 allows an authenticated attacker for arbitrary JavaScript code execution in the context of authenticated and unauthenticated users through the MaianAffiliate admin panel. (2022-06-16, CVE-2021-41420)

MaianAffiliate v1.0 allows an authenticated administrative user to save an XSS to the database. (2021-09-22, CVE-2021-39404)

Cross site scripting is an attack where a web page executes code that is injected by an adversary. It usually appears, when users input is presented. This attack can be used to impersonate a user, take over control of the session, or even steal API keys.

The attack can be executed e.g. when you application injects the request parameter directly into the HTML code of the page returned to the user:

https://server.com/confirmation?message=Transaction+Complete

what results in:

<span>Confirmation: Transaction Complete</span>

In that case the message can be modified to become a valid Javascript code, e.g.:

https://server.com/confirmation?message=<script>dangerous javascript code here</script>

and it will be executed locally by the user's browser with full access to the user's personal application/browser data:

<span>Confirmation: <script>dangerous javascript code here</script></span>