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Date: Tue, 13 Dec 2016 10:06:08 +0200
From: Elar Lang <elarlang@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] SQL injection in Joomla extension DT Register

Title: SQL injection in Joomla extension DT Register
Credit: Elar Lang / https://security.elarlang.eu
Vulnerability: SQL injection
Vulnerable version: before 3.1.12 (Joomla 3.x) / 2.8.18 (Joomla 2.5)
CVE: pending
Full Disclosure URL:
https://security.elarlang.eu/sql-injection-in-joomla-extension-dt-register.html
Vendor: DTH Development
* Vendor URL: http://www.dthdevelopment.com/
Product: DT Register "Calendar & Event Registration"
* Product URL: https://extensions.joomla.org/extension/dt-register
* Product URL: http://www.dthdevelopment.com/joomla-components/dt-register-event-registration-for-joomla.html


# Background

"DT Register is the Joomla Event Registration component that gives you
functionality beyond what any other event booking solution can offer"
(https://extensions.joomla.org/extension/dt-register)


# Vulnerability

SQL injection in Joomla extension "DT Register" by DTH Development
allows remote unauthenticated attacker to execute arbitrary SQL
commands via the cat parameter.


# Preconditions

No pre-conditions for authentication or authorization.


# Proof-of-Concept

http://[DOMAIN]/[PATH]/index.php?controller=calendar&format=raw&cat[0]=SQLi&task=events

PoC value (shows out all events / it's possible to see valid eventId values):
cat[0]=6) OR 1-- -


## Using UNION

For reading the data out using UNION it's important to have and to
know one valid eventId (detected in previous step).

In total there are 112 fields in select query, eventId position is no
13. For output is best to use position 112.

Step-by-Step - how to read the data out is available in blog:
https://security.elarlang.eu/sql-injection-in-joomla-extension-dt-register.html


# Vulnerability Disclosure Timeline

Full communication is available in blog:
https://security.elarlang.eu/sql-injection-in-joomla-extension-dt-register.html

2016-10-17 | me > DTH | via web form - I would like to report some
security holes. What is the correct way for that?
2016-10-18 | me > DTH | any response?
2016-10-25 | me > DTH | mail to dthdev@...development.com
2016-10-25 | DTH > me |
* "you are not in our client list"
* "Our site (dthdevelopment.com) is protected by an enterprise grade firewall"
2016-10-25 | me > DTH | I'm whitehat, technical details
2016-10-25 | DTH > me | description, what kind of serious problems I may face
2016-10-25 | me > DTH | explanations
2016-11-02 | me > DTH | hello?
2016-11-11 | me > DTH, SiteLock | Last call.
2016-11-11 | SiteLock / DTH / me | some communication
2016-11-12 | DTH > SiteLock (CC to me) | "It was configured to be open
in the setup"
2016-11-15 | DTH | Released DT Register version 3.1.12 (J3.x) / 2.8.18 (J2.5)
2016-12-05 | DTH > me | "Sorry, forgot to respont on this. We closed
the problem on our demo site".
2016-12-12 | me | Full Disclosure on security.elarlang.eu
2016-12-13 | me | Full Disclosure on FullDisclosure mailinglist on seclists.org


## asking CVE from DWF (Distributed Weakness Filing Project) /
http://iwantacve.org

2016-10-20 | me > DWF | CVE request
2016-10-31 | DWF > me | "CVE - Acceptance of MITRE Terms of Use for
CVE Assignment"
2016-10-31 | me > DWF | I accept
2016-11-19 | me > DWF | Any feedback or decision? (still no response)
2016-12-11 | me > DWF | Is there any hope to get feedback?  (still no response)

As I haven't got any feedback, you can take this post as CVE request.


# Fix
DT Register version 3.1.12 (J3.x) / 2.8.18 (J2.5).

--
Elar Lang
Blog @ https://security.elarlang.eu
Pentester, lecturer @ http://www.clarifiedsecurity.com

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