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Redaxo CMS contains multiple vulnerabilities

2016-02-16 14:55
=== LSE Leading Security Experts GmbH - Security Advisory 2016-01-18 ===

Redaxo CMS contains multiple vulnerabilities

Problem Overview
Technical Risk: high
Likelihood of Exploitation: medium
Vendor: https://www.redaxo.org/
Tested version: Redaxo CMS v5.0.0
Credits: LSE Leading Security Experts GmbH employee Tim Herres
Advisory URL: https://www.lsexperts.de/advisories/lse-2016-01-18.txt
Advisory Status: Public
CVE-Number: na

Redaxo is an easy to use open source content management system. A user can create his own website using the Redaxo CMS.
During internal research, multiple vulnerabilities were identified in the Redaxo CMS software.
The software is vulnerable to an SQL-Injection attack, allowing an authenticated user to access the database in an
unsafe way.
Some parts of the application do not have sufficient input validation and output encoding. This means user supplied
input is inserted in an unsafe way
resulting in a Cross Site Scripting vulnerability.

Issue Description
The following vulnerabilities are only examples. It is highly recommended to check the whole application for similar
1) SQL Injection in the "Mediapool" component:
Authentication required: yes
User needs access to the "Mediapool".

Exploitation using SQL Map
sqlmap -u "";
--cookie="PHPSESSID=h9s74l660iongtg71bpkjup0d1" -p media_name

Parameter: media_name (GET)
Type: stacked queries
Title: MySQL > 5.0.11 stacked queries (SELECT - comment)
Payload: page=mediapool/media&rex_file_category=0&media_name=test');(SELECT * FROM (SELECT(SLEEP(5)))jbWV)#&undefined=

2) Reflected XSS
Authentication required: yes
Used browser: FF42

3) Stored XSS (persistent XSS)
Authentication required: yes
Used browser: FF42
It is possible to store JavaScript Code in input fields.
Menu --> "Mediapool" --> "Media Category Managing" --> Add --> Name field

Temporary Workaround and Fix
Update to Version 5.0.1

2016-01-18 Issues discovered
2016-01-29 Vendor contacted
2016-02-05 Vendor confirmed
2016-02-09 Vendor released patch
2016-02-16 Advisory released

Description: OpenPGP digital signature

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Source: 07/beF/6102/erusolcsidlluf/gro.stsilces

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