Xclarity Administrator Cross-site Scripting

An internal product security audit of Lenovo XClarity Administrator (LXCA) discovered a Document Object Model (DOM) based cross-site scripting vulnerability in versions prior to 2.6.6 that could allow JavaScript code to be executed in the user's web browser if a specially crafted link is visited. The JavaScript code is executed on the user's system, not executed on LXCA itself. (2020-02-14, CVE-2019-19757)

A reflected cross-site scripting (XSS) vulnerability was reported in Lenovo XClarity Administrator (LXCA) versions prior to 2.5.0 that could allow a crafted URL, if visited, to cause JavaScript code to be executed in the user's web browser. The JavaScript code is not executed on LXCA itself. (2019-09-03, CVE-2019-6181)

A stored cross-site scripting (XSS) vulnerability was reported in Lenovo XClarity Administrator (LXCA) versions prior to 2.5.0 that could allow an administrative user to cause JavaScript code to be stored in LXCA which may then be executed in the user's web browser. The JavaScript code is not executed on LXCA itself. (2019-09-03, CVE-2019-6180)

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>