This article is a part of our Vulnerability Database (back to index)
Cross-site Scripting occurrences in Http Commander
A stored cross-site scripting (XSS) vulnerability in the admin interface in Element-IT HTTP Commander 7.0.0 allows unauthenticated users to get admin access by injecting a malicious script in the User-Agent field. (2022-03-03, CVE-2022-24573)
A cross-site scripting (XSS) vulnerability in the "Zip content" feature in Element-IT HTTP Commander 3.1.9 allows remote authenticated users to inject arbitrary web script or HTML via filenames. (2022-01-13, CVE-2021-40813)
A Cross-site scripting (XSS) vulnerability in the "View in Browser" feature in Elements-IT HTTP Commander 5.3.3 allows remote authenticated users to inject arbitrary web script or HTML via a crafted SVG image. (2021-07-14, CVE-2021-33212)
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>