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Message-ID: <0LZf8m-1agXWr1IMO-00lV1w@mrelayeu.kundenserver.de>
Date: Fri, 13 Nov 2015 16:51:00 +0100
From: "Curesec Research Team (CRT)" <crt@...esec.com>
To: fulldisclosure@...lists.org
Subject: [FD] XCart 5.2.6: XSS

Security Advisory - Curesec Research Team

1. Introduction

Affected Product:    XCart 5.2.6
Fixed in:            5.2.7
Fixed Version Link:  https://www.x-cart.com/xc5kit
Vendor Contact:      support@...art.com
Vulnerability Type:  XSS
Remote Exploitable:  Yes
Reported to vendor:  08/13/2015
Disclosed to public: 11/04/2015
Release mode:        Coordinated release
CVE:                 n/a
Credits              Tim Coen of Curesec GmbH

2. Vulnerability Description

There are multiple XSS vulnerabilities in the dialog.php file. This allows an
attacker to execute arbitrary JavaScript in the context of the browser of a
victim if the victim clicks on an attacker supplied link or visits an attacker
controlled website. With this, it is possible to bypass CSRF protection and
thus do anything the victim can do, inject a JavaScript keylogger, or perform
phishing attacks.

3. Proof of Concept

http://localhost/anew/xcart/skins/admin/en/modules/CDev/TinyMCE/js/tinymce/plugins/filemanager/dialog.php?editor="><script>alert(1)</script>&lang="><script>alert(2)</script>&field_id="><script>alert(3)</script>&fldr="><script>alert(4)</script>&type="><script>alert(5)</script>

4. Solution

To mitigate this issue please upgrade at least to version 5.2.7:

https://www.x-cart.com/xc5kit

Please note that a newer version might already be available.

5. Report Timeline

08/13/2015 Informed Vendor about Issue
09/03/2015 Vendor Requests more time
10/19/2015 Vendor releases fix
11/04/2015 Disclosed to public

Blog Reference:
http://blog.curesec.com/article/blog/XCart-526-XSS-84.html

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