Tractor Cross-site Scripting

Pixar's Tractor software, versions 2.2 and earlier, contain a stored cross-site scripting vulnerability in the field that allows a user to add a note to an existing node. The stored information is displayed when a user requests information about the node. An attacker could insert Javascript into this note field that is then saved and displayed to the end user. An attacker might include Javascript that could execute on an authenticated user's system that could lead to website redirects, session cookie hijacking, social engineering, etc. As this is stored with the information about the node, all other authenticated users with access to this data are also vulnerable. (2018-12-13, CVE-2018-5411)

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>