This article is a part of our Vulnerability Database (back to index)
Cross-site Scripting occurrences in Smartermail
SmarterTools SmarterMail 16.x through 100.x before 100.0.7803 allows XSS. (2021-11-17, CVE-2021-43977)
SmarterTools SmarterMail 16.x before build 7866 has stored XSS. The application fails to sanitize email content, thus allowing one to inject HTML and/or JavaScript into a page that will then be processed and stored by the application. (2021-09-08, CVE-2021-40377)
SmarterTools SmarterMail before Build 7776 allows XSS. (2021-07-06, CVE-2021-32233)
SmarterTools SmarterMail 16.x before build 6995 has stored XSS. JavaScript code could be executed on the application by opening a malicious email or when viewing a malicious file attachment. (2019-04-24, CVE-2019-7211)
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>