This article is a part of our Vulnerability Database (back to index)
Cross-site Scripting occurrences in Mdaemon
An Authenticated Reflected Cross-site scripting at BCC Parameter was discovered in MDaemon before 22.0.0 . (2022-05-11, CVE-2022-29976)
An Authenticated Reflected Cross-site scripting at CC Parameter was discovered in MDaemon before 22.0.0 . (2022-05-11, CVE-2022-29975)
An issue was discovered in MDaemon before 20.0.4. There is Reflected XSS in Webmail (aka WorldClient). It can be exploited via a GET request. It allows performing any action with the privileges of the attacked user. (2021-04-14, CVE-2021-27180)
MDaemon Webmail 14.x through 18.x before 18.5.2 has XSS (issue 1 of 2). (2019-02-21, CVE-2019-8983)
MDaemon Webmail 14.x through 18.x before 18.5.2 has XSS (issue 2 of 2). (2019-02-21, CVE-2019-8984)
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>