This article is a part of our Vulnerability Database (back to index)
Cross-site Scripting occurrences in Cashier Queuing System
A vulnerability, which was classified as problematic, has been found in SourceCodester Cashier Queuing System 1.0.1. This issue affects some unknown processing of the component User Creation Handler. The manipulation leads to cross site scripting. The attack may be initiated remotely. The associated identifier of this vulnerability is VDB-211187. (2022-10-18, CVE-2022-3580)
A vulnerability, which was classified as problematic, was found in SourceCodester Cashier Queuing System 1.0. Affected is an unknown function of the component Cashiers Tab. The manipulation of the argument Name leads to cross site scripting. It is possible to launch the attack remotely. The identifier of this vulnerability is VDB-211188. (2022-10-18, CVE-2022-3581)
Why Cross-site Scripting can be dangerous
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>