This article is a part of our Vulnerability Database (back to index)
Cross-site Scripting occurrences in Webmin
A vulnerability, which was classified as problematic, was found in Webmin. Affected is an unknown function of the file xterm/index.cgi. The manipulation leads to basic cross site scripting. It is possible to launch the attack remotely. The name of the patch is d3d33af3c0c3fd3a889c84e287a038b7a457d811. It is recommended to apply a patch to fix this issue. VDB-212862 is the identifier assigned to this vulnerability. (2022-11-02, CVE-2022-3844)
The Read Mail module in Webmin 1.995 and Usermin through 1.850 allows XSS via a crafted HTML e-mail message. (2022-07-27, CVE-2022-36880)
A Cross-Site Scripting (XSS) vulnerability exists in Webmin 1.973 through the Add Users feature. (2022-04-11, CVE-2021-32160)
A Cross-Site Scripting (XSS) vulnerability exists in Webmin 1.973 through the File Manager feature. (2022-04-11, CVE-2021-32161)
A Cross-Site Scripting (XSS) vulnerability exists in Webmin 1.973 via the Scheduled Cron Jobs feature. (2022-04-11, CVE-2021-32157)
A Cross-Site Scripting (XSS) vulnerability exists in Webmin 1.973 via the Upload and Download feature. (2022-04-11, CVE-2021-32158)
Webmin 1.973 is affected by reflected Cross Site Scripting (XSS) to achieve Remote Command Execution through Webmin's running process feature. (2021-04-25, CVE-2021-31761)
An Improper Data Validation Vulnerability exists in Webmin 1.941 and earlier affecting the Command Shell Endpoint. A user may enter HTML code into the Command field and submit it. Then, after visiting the Action Logs Menu and displaying logs, the HTML code will be rendered (however, JavaScript is not executed). Changes are kept across users. (2020-10-12, CVE-2020-8821)
An XSS Vulnerability exists in Webmin 1.941 and earlier affecting the Cluster Shell Commands Endpoint. A user may enter any XSS Payload into the Command field and execute it. Then, after revisiting the Cluster Shell Commands Menu, the XSS Payload will be rendered and executed. (2020-10-12, CVE-2020-8820)
XSS exists in Webmin 1.941 and earlier affecting the Save function of the Read User Email Module / mailboxes Endpoint when attempting to save HTML emails. This module parses any output without sanitizing SCRIPT elements, as opposed to the View function, which sanitizes the input correctly. A malicious user can send any JavaScript payload into the message body and execute it if the user decides to save that email. (2020-10-12, CVE-2020-12670)
Webmin 1.890 has XSS via /config.cgi?webmin, the /shell/index.cgi history parameter, /shell/index.cgi?stripped=1, or the /webminlog/search.cgi uall or mall parameter. (2019-03-21, CVE-2018-19191)
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>