Document Title: =============== Pluck 4.7.3 - (Delete File) CSRF Web Vulnerability References (Source): ==================== Release Date: ============= 2016-10-17 Vulnerability Laboratory ID (VL-ID): ==================================== 1980 Common Vulnerability Scoring System: ==================================== 3.2 Product & Service Introduction: =============================== Pluck, also known as pluck-cms, is an open source content management system, written in the PHP scripting language. It allows for webpage creation for users with little or no programming experience, and, unlike most content management systems, does not use a database to store its data. Pluck also includes a module system, which allows developers to integrate custom functionality into the system. (Copy of the Vendor Homepage: ) Abstract Advisory Information: ============================== An independent vulnerability laboratory researcher discovered a client-side cross site request forgery vulnerability in the Pluck v4.7.3 CMS. Vulnerability Disclosure Timeline: ================================== 2016-10-17: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== Exploitation Technique: ======================= Remote Severity Level: =============== Low Technical Details & Description: ================================ A cross site request forgery web vulnerability has been discovered in the official Pluck v4.7.3 content management system. The issue allows remote attackers to manipulate client-side browser to web-application requests to execute service functions via non-expired session credentials. The cross site request forgery vulnerability is located in the cms `var1` parameter of the `admin.php` module POST method request. In the absence of a security token an attacker can execute arbitrary codes against administrator accounts to permanenly delete the pages of the website via panel. Due to the infrastructure the issue becomes more critical without a checkbox to confirm the delete of any page via panel module. The security risk of the csrf vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 3.2. Exploitation of the client-side vulnerability requires no privileged web-application user account and only low user interaction. Proof of Concept (PoC): ======================= The csrf web vulnerability can be exploited by remote attackers without privileged web-application user account and with low user interaction. For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue. PoC: Exploitation Delete Pages CSRF Reference(s): http://localhost:8080/ http://localhost:8080/login.php http://localhost:8080/admin.php http://localhost:8080/admin.php?action= http://localhost:8080/admin.php?action=deletepage http://localhost:8080/admin.php?action=deletepage&var1= Security Risk: ============== The security risk of the cross site request forgery web vulnerability in the pluck cms is estimated as medium. (CVSS 3.2) Credits & Authors: ================== ZwX - ( )[] 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 mainly 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: - - Section: - - Social: - - Feeds: - - Programs: - - Any modified copy or reproduction, including partially usages, of this file, resources or information 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@) to get a ask permission. Copyright © 2016 | Vulnerability Laboratory - [Evolution Security GmbH]™