Analytics Platform Cross-site Scripting

The Spotfire client component of TIBCO Software Inc.'s TIBCO Spotfire Analyst, TIBCO Spotfire Analytics Platform for AWS Marketplace, TIBCO Spotfire Desktop, and TIBCO Spotfire Server contains a vulnerability that theoretically allows a low privileged attacker with network access to execute a stored Cross Site Scripting (XSS) attack on the affected system. A successful attack using this vulnerability requires human interaction from a person other than the attacker. Affected releases are TIBCO Software Inc.'s TIBCO Spotfire Analyst: versions 10.3.3 and below, versions 10.10.0, 10.10.1, and 10.10.2, versions 10.7.0, 10.8.0, 10.9.0, 11.0.0, and 11.1.0, TIBCO Spotfire Analytics Platform for AWS Marketplace: versions 11.1.0 and below, TIBCO Spotfire Desktop: versions 10.3.3 and below, versions 10.10.0, 10.10.1, and 10.10.2, versions 10.7.0, 10.8.0, 10.9.0, 11.0.0, and 11.1.0, and TIBCO Spotfire Server: versions 10.3.11 and below, versions 10.10.0, 10.10.1, 10.10.2, and 10.10.3, versions 10.7.0, 10.8.0, 10.8.1, 10.9.0, 11.0.0, and 11.1.0. (2021-03-09, CVE-2021-23273)

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>