This article is a part of our Vulnerability Database (back to index)
Cross-site Scripting occurrences in Time Tracker
Anuko Time Tracker is an open source, web-based time tracking application written in PHP. ttUser.class.php in Time Tracker versions prior to 1.20.0.5646 was not escaping primary group name for display. Because of that, it was possible for a logged in user to modify primary group name with elements of JavaScript. Such script could then be executed in user browser on subsequent requests on pages where primary group name was displayed. This is vulnerability has been fixed in version 1.20.0.5646. Users who are unable to upgrade may modify ttUser.class.php to use an additional call to htmlspecialchars when printing group name. (2022-02-24, CVE-2022-24708)
Anuko Time Tracker is an open source, web-based time tracking application written in PHP. When a logged on user selects a date in Time Tracker, it is being passed on via the date parameter in URI. Because of not checking this parameter for sanity in versions prior to 1.19.30.5600, it was possible to craft the URI with malicious JavaScript, use social engineering to convince logged on user to click on such link, and have the attacker-supplied JavaScript to be executed in user's browser. This issue is patched in version 1.19.30.5600. As a workaround, one may introduce `ttValidDbDateFormatDate` function as in the latest version and add a call to it within the access checks block in time.php. (2021-10-13, CVE-2021-41139)
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>