Wp Athletics Cross-site Scripting

The WP Athletics WordPress plugin through 1.1.7 does not sanitise and escape a parameter before outputting back in an admin page, leading to a Reflected Cross-Site Scripting (2022-06-13, CVE-2022-1773)

The WP Athletics WordPress plugin through 1.1.7 does not sanitize parameters before storing them in the database, nor does it escape the values when outputting them back in the admin dashboard, leading to a Stored Cross-Site Scripting vulnerability. (2022-06-13, CVE-2022-1549)

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>